WO2014106388A1

WO2014106388A1 - Method and device for determining temporal motion vector predictor

Info

Publication number: WO2014106388A1
Application number: PCT/CN2013/082017
Authority: WO
Inventors: 林永兵
Original assignee: 华为技术有限公司
Priority date: 2013-01-07
Filing date: 2013-08-22
Publication date: 2014-07-10
Also published as: CN103024397B; CN103024397A

Abstract

Provided is a method for determining a temporal motion vector predictor, which can improve the effect of acquiring a temporal motion vector predictor of a currently processed image block. The method comprises: according to image information about a reference image of a current image block, determining a corresponding image of the current image block from an image set, wherein the image information comprises any of the following information: an image type, an image order count (POC) relationship between same and an image to which the current block belongs, and a belonging layer in scalable coding or a belonging view in multi-view coding, the image type is divided into a long-term type and a short-term type, the POC relationship is divided into POCs that are the same and POCs that are different, the belonging layer is divided into a base layer and an enhancement layer, and the belonging view is divided into a base view and a dependent view; or according to image information about a corresponding image of the current image block, determining a reference image of the current image block from the image set; determining a corresponding image block of the current image block in the corresponding image; and according to the reference image and the corresponding image block, determining a temporal motion vector predictor of the current image block.

Description

Method and apparatus for determining time domain motion vector predictors

The present invention relates to the field of video and, more particularly, to determining predictive values of time domain motion vectors

Background technique

At present, a method of image processing is known, and a corresponding block corresponding to a current block is found in a reference image according to a motion vector (MV, Motion Vector:) of a currently processed image block (hereinafter, simply referred to as a current block), according to the Corresponding block, determining the motion vector predictor (MVP, Motion vector predictor) of the current block. At the encoding end, the MVP is subtracted from the MV of the current block to obtain a difference, and the difference is encoded. At the decoding end, the code stream is decoded to obtain the difference, and based on the difference and the MVP, the MV of the current block is determined.

The MVP includes a time domain motion vector predictor (TMVP, Temporal MV Predictor), that is, an MVP obtained according to a time domain reference image block (also referred to as a corresponding block or a corresponding image block) of the current block, the so-called time domain, referring to the current The image in which the block is located and the image in which the corresponding block is located are at different time positions on the time axis of the video sequence, and the position is represented by a picture sequence number (POC, Picture Order Count). The time domain distance of the MV refers to the distance between the reference image and the image in which the current block is located, that is, the difference between the image POC.

In the process of acquiring TMVP, if the time domain distance of the MV of the current block and the time domain distance of the MV of the corresponding image block of the current block may be different, the scaling of the MV is involved. The scaling process is shown in Equation 1 below:

currMV = d/D * colMV formula 1

D = POC(currRefPic)- POC(currPic)

d = POC(colRefPic)- POC(colPic)

Here, currMV represents the TMVP of the current block to be acquired, colMV represents the TMV of the time domain reference block of the current block, and the time domain reference block is also referred to as a co-located block (colBlock). D Indicates the time domain distance of the MV of the current block (currBlock, current Block), and D is equal to the POC difference between the current block's reference image (currRefPic, current Reference Picture) and the current image (currPic, current Picture) where the current block is located. d represents the time i ^ large distance of the MV of the corresponding block, and d is equal to the POC difference value of the reference image (colRefPic, co-located Reference Picture) pointed to by the MV of the corresponding block (the colRefPic, co-located Reference Picture) and the image of the corresponding block. Here, the image in which the corresponding block is located is referred to as a colPic co-located picture. FIG. 1 is a diagram showing the relationship between a current image, a corresponding image, a reference image of a current image, and a reference image of a corresponding image.

In the prior art, reference images are classified into long-term long-term and short-term short-term types.

If the reference image types of colRefPic and currRefPic are both short-term, then MV scaling is performed to obtain TMVP, ie currMV=d/D*colMV. If the reference image types of colRefPic and currRefPic are both long-term , then currMV= colMV , and the scaling factor is 1. If colRefPic and currRefPic have different reference image types, currMV cannot be obtained.

For example, if the reference image type of colRefPic is short-term and the reference image type of currRefPic is long-term, then d/D is a small value (close to zero), therefore, the obtained TMVP of the current block has no reference. value.

For another example, if the reference image type of colRefPic is long-term, the reference image type of currRefPic is short-term, then d/D is a large value (close to infinity), and likewise, the TMVP of the current block obtained is not Reference value.

Summary of the invention

Embodiments of the present invention provide a method, apparatus, and device for determining a time domain motion vector predictor, which can improve an effect of acquiring a time domain motion vector predictor of a currently processed image block.

In a first aspect, a method for determining a time domain motion vector predictor is provided, the method comprising: determining, according to image information of a reference image of a current image block, a corresponding image of the current image block from the image set, where The image information includes any of the following information: image type, image sequence number POC relationship with the image of the current block, associated layer in hierarchical coding, or in multi-view In the encoding, the image type is divided into a long-term type and a short-term type. The POC relationship is divided into a POC and a POC. The belonging layer is divided into a basic layer and an enhancement layer. The belonging view is divided into a basic view and a dependent view. Or determining, according to image information of the corresponding image of the current image block, a reference image of the current image block from the image set, wherein the image information includes any of the following information: an image type, and an image of the current block The image sequence number between the POC relationship, the layer to which the image belongs in layered coding, or the view in the multi-view code. The image type is divided into a long-term type and a short-term type.

The POC relationship is divided into the same POC and the POC, and the belonging layer is divided into a base layer and an enhancement layer, and the belonging view is a base view and a dependent view; determining a corresponding image block of the current image block in the corresponding image; The reference image and the corresponding image block determine a temporal motion vector predictor of the current image block.

In a possible implementation manner, the current image block is a dependent view image, the image set includes a base view image corresponding to the dependent view, or the current image block is an image block in the enhancement layer image, the image The set includes an image of the base layer corresponding to the enhancement layer image.

With reference to the first aspect and the first possible implementation manner, in a second possible implementation manner, determining, according to image information of a reference image of a current image block, a corresponding image of the current image block from the image set, including Determining, according to an image type of the reference image of the current image block, a corresponding image of the current image block from the image set such that an image type of the corresponding image is different from an image type of the reference image; or according to the current image block a POC relationship between the reference image and the image of the current block, from which the corresponding image of the current image block is determined such that the POC relationship between the corresponding image and the image of the current block belongs to Determining a POC relationship with the associated image of the current block and the associated image of the current block; or determining a corresponding image of the current image block from the image set according to the associated layer of the reference image of the current image block, so that the The belonging layer of the corresponding image is different from the belonging layer of the reference image; or according to the belonging view of the reference image of the current image block, From the set of images, a corresponding image of the current image block is determined such that the belonging view of the corresponding image is different from the belonging view of the reference image.

With reference to the first aspect, the first possible implementation, and the second possible implementation, in a third possible implementation, the image set includes at least two first candidate images, where The type of the first candidate image is different from the image type of the reference image, or a POC relationship between the image of the first candidate image and the image of the current block, and the belonging of the reference image and the current block The POC relationship between the images is different, or the belonging layer of the first candidate image is different from the belonging layer of the reference image, or the belonging view of the first candidate image is different from the belonging view of the reference image, and Determining, according to the image information of the reference image of the current image block, the corresponding image of the current image block from the image set, comprising: according to the image information of the reference image of the current image block, from the at least two first candidate images The image having the smallest index number in the image set is determined as the corresponding image of the current image block.

With reference to the first aspect, the first possible implementation manner, the second possible implementation manner, and the third possible implementation manner, in a fourth possible implementation manner, the image collection includes at least one second candidate image And at least one third candidate image, wherein the second candidate image is different from the image type of the third candidate image, or between the image of the second candidate image and the image of the current block

a POC relationship, which is different from a POC relationship between the third candidate image and the belonging image of the current block, or the belonging layer of the second candidate image is different from the belonging layer of the third candidate image, or The belonging view of the second candidate image is different from the belonging view of the third candidate image, and the method further includes: determining, from the image set, a predicted image, the predicted image including a second candidate image and a a third candidate image, the predicted image is used to determine a corresponding image of each image block in a strip in which the current image block is located; and determining, according to a type of the reference image, a correspondence of the current image block from the image set The image includes: determining, from the predicted image, a corresponding image of the current image block.

With reference to the first aspect, the first possible implementation manner, the second possible implementation manner, the third possible implementation manner, and the fourth possible implementation manner, in a fifth possible implementation manner, the image collection Include at least two second candidate images, and/or the image set includes at least two third candidate images, and determining the predicted image from the set of images includes: determining a predicted image from the set of images, The predicted image includes an image having the smallest index number in the image set of the at least two second candidate images; and/or determining a predicted image from the set of images, the predicted image including the at least two third preparations The image with the smallest index number in the image set in the image is selected. Combining the first aspect, the first possible implementation manner, the second possible implementation manner, the third possible implementation manner, the fourth possible implementation manner, and the fifth possible implementation manner, in the sixth possibility In an embodiment, the method includes: determining, from the image set, a target image as a corresponding image of each image block in a strip in which the current image block is located; and image information according to the corresponding image of the current image block, Determining the reference image of the current image block in the image set, comprising: determining, according to an image type of the corresponding image of the current image block, a reference image of the current image block from the image set, so that the image type of the reference image Differentiating from the image type of the corresponding image; or determining a reference image of the current image block from the image set according to a POC relationship between the corresponding image of the current image block and the image of the current image, so that the a POC relationship between the reference image and the associated image of the current block and between the image of the corresponding image and the image of the current block The POC relationship is different; or the reference image of the current image block is determined from the image set according to the belonging layer of the corresponding image of the current image block, so that the belonging layer of the reference image is different from the belonging layer of the corresponding image; Or determining a reference image of the current image block from the image set according to the belonging view of the corresponding image of the current image block, so that the belonging view of the reference image is different from the belonging view of the corresponding image.

Combining the first aspect, the first possible implementation manner, the second possible implementation manner, the third possible implementation manner, the fourth possible implementation manner, the fifth possible implementation manner, and the sixth possible Embodiments, in a seventh possible implementation, the image set includes at least two fourth candidate images, where the type of the fourth candidate image is different from the image type of the reference image, or the first a POC relationship between the four candidate images and the associated image of the current block, different from a POC relationship between the reference image and the associated image of the current block, or the associated layer of the fourth candidate image The belonging layer of the reference image is different, or the belonging view of the fourth candidate image is different from the belonging view of the reference image, and the image information according to the corresponding image is used to determine the current image block from the image set. The reference image includes: determining, according to the image information of the corresponding image, an image with the smallest index number in the image set from the at least two fourth candidate images as the current Like reference image block. Combining the first aspect, the first possible implementation manner, the second possible implementation manner, the third possible implementation manner, the fourth possible implementation manner, the fifth possible implementation manner, and the sixth possible Embodiments and a seventh possible implementation manner, in an eighth possible implementation manner, the belonging image of the current image block is a bidirectional prediction image, the corresponding image is a bidirectional prediction image, and the corresponding image and the corresponding image Determining a time domain motion vector predictor of the current image block, comprising: determining a motion vector of the corresponding image block according to image information of the corresponding image; determining the sound according to the reference image and a motion vector of the corresponding image block The time domain motion vector predictor of the current image block.

Combining the first aspect, the first possible implementation manner, the second possible implementation manner, the third possible implementation manner, the fourth possible implementation manner, the fifth possible implementation manner, and the sixth possible The embodiment, the seventh possible implementation manner, and the eighth possible implementation manner, in the ninth possible implementation manner, the determining a motion vector of the corresponding image block further includes: when the image type of the corresponding image is In the case of the long-term type, if the reference image of the current image block is from the first reference image list of the image of the current image block, the motion vector of the corresponding image block is determined such that the image pointed by the motion vector of the corresponding image block belongs to a first reference image list of the corresponding image, if the reference image of the current image block is from a second reference image list of the belonging image of the current image block, determining a motion vector of the corresponding image block, so that the corresponding image block is The image pointed by the motion vector belongs to the second reference image list of the corresponding image; or when the corresponding Image

When the POC is the same as the POC of the image of the current image block, if the reference image of the current image block is from the first reference image list of the belonging image of the current image block, determining a motion vector of the corresponding image block, so that the POC And the image pointed by the motion vector of the corresponding image block belongs to the first reference image list of the corresponding image, and if the reference image of the current image block is from the second reference image list of the belonging image of the current image block, determining the corresponding image block a motion vector, such that the image pointed by the motion vector of the corresponding image block belongs to the second reference image list of the corresponding image; or when the associated layer of the corresponding image is the base layer, if the reference image of the current image block is from the Determining, by the first reference image list of the image of the current image block, the motion vector of the corresponding image block, so that the The image of the image corresponding to the motion vector of the corresponding image block belongs to the first reference image list, and if the reference image of the current image block is from the second reference image list of the image of the current image block, the corresponding image is determined. a motion vector of the block such that the image pointed to by the motion vector of the corresponding image block belongs to the second reference image list of the corresponding image; or when the belonging of the corresponding image is regarded as the base view, if the reference image of the current image block comes from And determining, by the first reference image list of the image of the current image block, a motion vector of the corresponding image block, so that the image of the corresponding image pointed by the motion vector of the corresponding image block belongs to the first reference image list, if the current The reference image of the image block is from the second reference image list of the image of the current image block, and then the motion vector of the corresponding image block is determined such that the image pointed by the motion vector of the corresponding image block belongs to the second reference of the corresponding image. A list of images.

In a second aspect, a method for determining a time domain motion vector predictor is provided, the method comprising: determining a reference image of a current image block and a corresponding image, wherein the belonging image of the current image block is a bidirectional predicted image, and the corresponding image Determining an image for two directions; determining a corresponding image block of the current image block in the corresponding image; determining a motion vector of the corresponding image block according to image information of the corresponding image, the image information including any of the following information: image type, and The image sequence number POC relationship between the images of the current block, the belonging layer in the layered coding, or the belonging view in the multi-view coding, the image type is divided into a long-term type and a short-term type, and the POC relationship is divided into POCs. The same as the POC, the affiliation layer is divided into a base layer and an enhancement layer, and the affiliation is divided into a base view and a dependent view; determining the time domain motion of the current image block according to the reference image and the motion vector of the corresponding image block Vector predictive value.

In a possible implementation manner, the determining a motion vector of the corresponding image block further includes:

When the image type of the corresponding image is a long-term type, if the reference image of the current image block is from the first reference image list of the image of the current image block, determining a motion vector of the corresponding image block, so that the corresponding image The image of the corresponding image pointed by the motion vector of the block belongs to the first reference image list, if the reference image of the current image block is from the associated image of the current image block Determining, by the second reference image list of the image, a motion vector of the corresponding image block such that the image pointed by the motion vector of the corresponding image block belongs to the second reference image list of the corresponding image; or when the POC of the corresponding image is related to the current When the POC of the image of the image block is the same, if the reference image of the current image block is from the first reference image list of the image of the current image block, the motion vector of the corresponding image block is determined, so that the corresponding image block is The image pointed by the motion vector belongs to the first reference image list of the corresponding image, and if the reference image of the current image block is from the second reference image list of the belonging image of the current image block, determining the motion vector of the corresponding image block, And causing the image pointed by the motion vector of the corresponding image block to belong to the second reference image list of the corresponding image; or when the belonging layer of the corresponding image is the base layer, if the reference image of the current image block is from the current image block Corresponding to the first reference image list of the image, determining the motion vector of the corresponding image block, so that The image pointed by the motion vector of the corresponding image block belongs to the first reference image list of the corresponding image, and if the reference image of the current image block is from the second reference image list of the image of the current image block, the corresponding image block is determined. Motion vector, such that the image pointed by the motion vector of the corresponding image block belongs to the second reference image list of the corresponding image; or when the belonging of the corresponding image is regarded as the base view, if the reference image of the current image block is from Determining, by the first reference image list of the image of the current image block, a motion vector of the corresponding image block, so that the image pointed by the motion vector of the corresponding image block belongs to the first reference image list of the corresponding image, if the current image The reference image of the block is from the second reference image list of the image of the current image block, and then the motion vector of the corresponding image block is determined such that the image pointed by the motion vector of the corresponding image block belongs to the second reference image of the corresponding image. List.

In a third aspect, an apparatus for determining a time domain motion vector predictor is provided, the apparatus comprising: a determining unit, configured to determine, according to image information of a reference image of a current image block, a correspondence of the current image block from the image set An image, wherein the image information includes any of the following: an image type, an image sequence number POC relationship with an image of the current block, an belonging layer in hierarchical coding, or an attribute in multi-view coding, The image type is divided into a long-term type and a short-term type, and the POC relationship is divided into a POC and a POC, or is used for a corresponding image according to a current image block. Image information, from the image set, determining a reference image of the current image block, wherein the image information includes any of the following information: an image type, an image sequence number POC relationship with an image of the current block, Any information in the layer to which the image belongs or belongs to in the multiview encoding. The image type is divided into a long-term type and a short-term type. The POC relationship is divided into POC and POC. The processing unit uses Determining a corresponding image block of the current image block in the corresponding image; and determining, according to the reference image and the corresponding image block, a time domain motion vector predictor of the current image block.

With reference to the third aspect and the first possible implementation manner, in a second possible implementation manner, the determining unit is specifically configured to determine the current image from the image set according to an image type of the reference image of the current image block. a corresponding image of the block such that the image type of the corresponding image is different from the image type of the reference image; or from a POC relationship between the reference image of the current image block and the image of the current block, from the image In the set, determining a corresponding image of the current image block, so that a POC relationship between the corresponding image and an image of the current block is different from a POC relationship between the reference image and the image of the current block; Or determining, according to the belonging layer of the reference image of the current image block, from the image set, determining a corresponding image of the current image block, such that the belonging layer of the corresponding image is different from the belonging layer of the reference image; or Determining, according to the belonging view of the reference image of the current image block, a corresponding image of the current image block from the image set, so that the corresponding image is The belonging view of the image is different from the view of the reference image.

With reference to the third aspect, the first possible implementation manner, and the second possible implementation manner, in a third possible implementation manner, the image set includes at least two first candidate images, where the first The type of the candidate image is different from the image type of the reference image, or a POC relationship between the image of the first candidate image and the image of the current block, and the image of the reference image and the image of the current block The POC relationship is different, or the belonging layer of the first candidate image and the belonging of the reference image The layers are different, or the belonging view of the first candidate image is different from the belonging view of the reference image, and the determining unit is specifically configured to use image information of the reference image from the at least two first candidate images. And determining an image with the smallest index number in the image set as a corresponding image of the current image block.

With reference to the third aspect, the first possible implementation manner, the second possible implementation manner, and the third possible implementation manner, in a fourth possible implementation manner, the image collection includes at least one second candidate image And at least one third candidate image, wherein the second candidate image is different from the image type of the third candidate image, or between the image of the second candidate image and the image of the current block

a POC relationship, which is different from a POC relationship between the third candidate image and the belonging image of the current block, or the belonging layer of the second candidate image is different from the belonging layer of the third candidate image, or The belonging view of the second candidate image is different from the belonging view of the third candidate image, and the determining unit is further configured to determine, from the image set, a predicted image, the predicted image including a second candidate image and a third candidate image for determining a corresponding image of each image block in the strip in which the current image block is located; for determining a corresponding image of the current image block from the predicted image.

With reference to the third aspect, the first possible implementation manner, the second possible implementation manner, the third possible implementation manner, and the fourth possible implementation manner, in the fifth possible implementation manner, the image collection Include at least two second candidate images, and/or the image set includes at least two third candidate images, and the determining unit is specifically configured to determine a predicted image from the image set, the predicted image including the at least two An image of the second candidate image having the smallest index number in the image set; and/or for determining a predicted image from the image set, the predicted image including the at least two third candidate images The image with the smallest index number in the image collection.

Combining the third aspect, the first possible implementation manner, the second possible implementation manner, the third possible implementation manner, the fourth possible implementation manner, and the fifth possible implementation manner, in the sixth possibility In an embodiment, the determining unit is specifically configured to: determine, from the image set, a target image as a corresponding image of each image block in the strip in which the current image block is located; and an image type used according to the corresponding image of the current image block Determining, from the image set, a reference image of the current image block such that an image type of the reference image is different from an image type of the corresponding image; or for a POC relationship between a corresponding image of the image block and the image of the current block, from which the reference image of the current image block is determined such that the reference image is between the image of the current block and the image of the current block The POC relationship is different from the POC relationship between the corresponding image and the image to which the current block belongs; or is used to determine a reference image of the current image block from the image set according to the belonging layer of the corresponding image of the current image block. So that the associated layer of the reference image is different from the associated layer of the corresponding image; or for determining the reference image of the current image block from the image set according to the belonging view of the corresponding image of the current image block, so that The belonging view of the reference image is different from the belonging view of the corresponding image.

Combining the third aspect, the first possible implementation manner, the second possible implementation manner, the third possible implementation manner, the fourth possible implementation manner, the fifth possible implementation manner, and the sixth possible Embodiments, in a seventh possible implementation, the image set includes at least two fourth candidate images, where the type of the fourth candidate image is different from the image type of the reference image, or the first a POC relationship between the four candidate images and the associated image of the current block, different from a POC relationship between the reference image and the associated image of the current block, or the associated layer of the fourth candidate image The belonging layer of the reference image is different, or the belonging view of the fourth candidate image is different from the belonging view of the reference image, and the determining unit is specifically configured to: according to the image information of the corresponding image, from the at least two fourth In the candidate image, an image with the smallest index number in the image set is determined as a reference image of the current image block.

Combining the third aspect, the first possible implementation manner, the second possible implementation manner, the third possible implementation manner, the fourth possible implementation manner, the fifth possible implementation manner, and the sixth possible Embodiments and a seventh possible implementation manner, in an eighth possible implementation manner, the belonging image of the current image block is a bidirectional predicted image, the corresponding image is a bidirectional predicted image, and the processing unit is specifically configured to use the Corresponding to the image information of the image, determining a motion vector of the corresponding image block; and determining a time domain motion vector predictor of the current image block according to the reference image and a motion vector of the corresponding image block.

With reference to the third aspect, the first possible implementation manner, the second possible implementation manner, the third possible implementation manner, the fourth possible implementation manner, the fifth possible implementation manner, the sixth a possible implementation manner, a seventh possible implementation manner, and an eighth possible implementation manner. In the ninth possible implementation manner, the processing unit is specifically configured to: when the image type of the corresponding image is a long-term type, If the reference image of the current image block is from the first reference image list of the image of the current image block, determining a motion vector of the corresponding image block, so that the image pointed by the motion vector of the corresponding image block belongs to the corresponding image a first reference image list, if the reference image of the current image block is from a second reference image list of the belonging image of the current image block, determining a motion vector of the corresponding image block to point the motion vector of the corresponding image block The image belongs to the second reference image list of the corresponding image; or when the POC of the corresponding image is the same as the POC of the image of the current image block, if the reference image of the current image block is from the current image block a first reference image list of the image, determining a motion vector of the corresponding image block to make the correspondence The image pointed by the motion vector of the block belongs to the first reference image list of the corresponding image, and if the reference image of the current image block is from the second reference image list of the belonging image of the current image block, determining the motion of the corresponding image block Vector, such that the image pointed to by the motion vector of the corresponding image block belongs to the second reference image list of the corresponding image; or when the associated layer of the corresponding image is the base layer, if the reference image of the current image block is from Determining, by the first reference image list of the image of the current image block, a motion vector of the corresponding image block, such that the image to which the motion vector of the corresponding image block belongs belongs to the image of the corresponding image belongs to the first reference image list, if The reference image of the current image block is from the second reference image list of the image of the current image block, and then the motion vector of the corresponding image block is determined such that the image pointed by the motion vector of the corresponding image block belongs to the second of the corresponding image. a reference image list; or when the belonging of the corresponding image is regarded as a base view, If the reference image of the current image block is from the first reference image list of the belonging image of the current image block, determining a motion vector of the corresponding image block, so that the image of the corresponding image pointed by the motion vector of the corresponding image block belongs to a first reference image list, if the reference image of the current image block is from a second reference image list of the belonging image of the current image block, determining a motion vector of the corresponding image block to point the motion vector of the corresponding image block The image belongs to a second reference image list of the corresponding image. In a fourth aspect, an apparatus for determining a time domain motion vector predictor is provided, the apparatus comprising: a determining unit, configured to determine a reference image and a corresponding image of a current image block, where the image of the current image block is bidirectionally predicted An image, the corresponding image is a bidirectional predicted image; a corresponding image block for determining the current image block in the corresponding image; a processing unit, configured to determine a motion vector of the corresponding image block according to the image information of the corresponding image, The image information includes any of the following information: an image type, an image sequence number POC relationship with an image of the current block, an belonging layer in hierarchical coding, or an attribute in multi-view coding, the image type is divided into For the long-term type and the short-term type, the POC relationship is divided into the same POC and the POC, and the belonging layer is divided into a base layer and an enhancement layer, and the belonging view is a base view and a dependent view; and is used according to the reference image and the corresponding image. The motion vector of the block determines the time domain motion vector predictor of the current image block.

In a possible implementation, the processing unit is specifically configured to: when the image type of the corresponding image is a long-term type, if the reference image of the current image block is from a first reference image list of the image of the current image block. And determining a motion vector of the corresponding image block, so that the image pointed by the motion vector of the corresponding image block belongs to the first reference image list of the corresponding image, if the reference image of the current image block is from the image of the current image block. a second reference image list, determining a motion vector of the corresponding image block such that the image pointed by the motion vector of the corresponding image block belongs to the second reference image list of the corresponding image; or for the POC of the corresponding image and the When the POC of the image of the current image block is the same, if the reference image of the current image block is from the first reference image list of the image of the current image block, the motion vector of the corresponding image block is determined, so that the corresponding image block is The image pointed by the motion vector belongs to the first reference image list of the corresponding image, if The reference image of the front image block is from the second reference image list of the image of the current image block, and then the motion vector of the corresponding image block is determined such that the image pointed by the motion vector of the corresponding image block belongs to the second of the corresponding image. a reference image list; or when the associated layer of the corresponding image is a base layer, if the reference image of the current image block is from the first reference image list of the image of the current image block, determining the motion of the corresponding image block Vector, such that the image pointed to by the motion vector of the corresponding image block belongs to the image of the corresponding image belongs to the first reference image list, if The reference image of the current image block is from the second reference image list of the image of the current image block, and then the motion vector of the corresponding image block is determined such that the image pointed by the motion vector of the corresponding image block belongs to the second of the corresponding image. a reference image list; or when the belonging of the corresponding image is regarded as a base view, if the reference image of the current image block is from the first reference image list of the belonging image of the current image block, determining the motion of the corresponding image block Vector, the image of the corresponding image pointed to by the motion vector of the corresponding image block belongs to the first reference image list, and if the reference image of the current image block is from the second reference image list of the belonging image of the current image block, A motion vector of the corresponding image block is determined such that the image pointed to by the motion vector of the corresponding image block belongs to the second reference image list of the corresponding image.

A method and apparatus for determining a time domain motion vector predictor according to an embodiment of the present invention, by selecting a reference image and a corresponding image of a current block, causing a reference image of the current block and an image type of the corresponding image, and an image block to which the current block belongs The POC relationship, the affiliation layer, or the view difference can improve the effect of making the reference image of the current block and the reference image of the corresponding image block belong to the same reference image type, and thus, at the time of the motion vector of the current block When the domain distance is different from the time domain distance of the motion vector of the corresponding block, the effect of acquiring the temporal motion vector predictor of the current block can be improved. DRAWINGS

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings to be used in the embodiments of the present invention will be briefly described below. It is obvious that the drawings described below are only some embodiments of the present invention, Those skilled in the art can also obtain other drawings based on these drawings without paying any creative work.

Fig. 1 is a schematic diagram showing an example of a relationship between a current image, a corresponding image, a reference image of a current image, and a reference image of a corresponding image.

2 is a schematic flow chart of a method of determining a time domain motion vector predictor in accordance with an embodiment of the present invention.

FIG. 3 is a schematic flowchart of a method of determining a time domain motion vector predictor according to another embodiment of the present invention. 4 is a schematic diagram showing another example of the relationship between the current image, the corresponding image, the reference image of the current image, and the reference image of the corresponding image.

Fig. 5 is a schematic diagram showing still another example of the relationship between the current image, the corresponding image, the reference image of the current image, and the reference image of the corresponding image.

6 is a schematic block diagram of an apparatus for determining a time domain motion vector predictor in accordance with an embodiment of the present invention.

Figure 7 is a schematic block diagram of an apparatus for determining a time domain motion vector predictor in accordance with another embodiment of the present invention.

detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without making creative labor are within the scope of the present invention.

The basic principle of video coding compression is to remove redundancy as much as possible by using the correlation between airspace, time domain and codewords. In a block-based hybrid video coding framework, video coding compression is implemented by prediction (including intra prediction and inter prediction), transform, quantization, entropy coding, and the like. In this coding framework, the video sequence includes a series of pictures, the picture is further divided into slices (also called slices) slices, which are then divided into block blocks. The video encoding is encoded in units of blocks from the top left position of the picture from left to right and from top to bottom. For ease of understanding, in the following description, the process of encoding or decoding a video will be described with respect to an image block.

2 shows a schematic flow diagram of a method 100 of determining a time domain motion vector predictor in accordance with an embodiment of the present invention. Moreover, the implementation body of the method 100 may be an encoding end or a decoding end, and the present invention is not particularly limited. As shown in FIG. 2, the method 100 includes:

S110. Determine, according to image information of a reference image of the current image block, a corresponding image of the current image block from the image set, where the image information includes any of the following information: The image sequence number POC relationship with the image of the current block, the belonging layer in hierarchical coding, or the dependent view in multi-view coding, the image type is divided into a long-term type and a short-term type, and the POC relationship is divided into The POC is the same as the POC, and the belonging layer is divided into a base layer and an enhancement layer, and the belonging view is a base view and a dependent view; or

Determining, from the image set, a reference image of the current image block according to image information of a corresponding image of the current image block, wherein the image information includes any of the following information: an image type, and an image of the current block The image sequence number POC relationship, the belonging layer of the image in the layered coding or the belonging view in the multi-view coding, the image type is divided into a long-term type and a short-term type, and the POC relationship is divided into a POC and a POC, and the belonging is different. The layer is divided into a base layer and an enhancement layer, and the belonging view is a base view and a dependent view;

S120. Determine a corresponding image block of the current image block in the corresponding image.

S130. Determine a time domain motion vector predictor of the current image block according to the reference image and the corresponding image block.

And, the current image block is a dependent view image, the image set includes a base view image corresponding to the dependent view, or

The current image block is an image block in the enhancement layer image, the image collection including an image of the base layer corresponding to the enhancement layer image.

Specifically, the method for determining a time domain motion vector predictor according to an embodiment of the present invention can be applied to include a plurality of reference images (or motion information of the reference image) including a multi-view coding technique and a layered coding technique. A technique of selecting a reference image in a set of images (or, a list of images) and using the reference image to determine motion information of the currently processed image block.

For example, in multi-view coding, a base view and an dependent view are included. Basic view independent coding, compatible with existing video coding standards, relying on the use of inter-view prediction technology to reference the base view coding, that is, the basic view is regarded as a reference view of the dependent view (or, depending on the view, the base view can be viewed as a base view) The image is used as a reference image) to predictively encode the dependent image. Since there is a strong correlation between the dependent view and the base view, the probability of relying on the selected base view as a reference Very large, this means that there are a large number of image blocks in the dependent view to select the image from the base view as the reference image.

Similarly, in layered coding or scalable coding, a base layer and an enhancement layer are included. The base layer is independently coded and compatible with existing video coding standards. The enhancement layer uses the inter-layer prediction technique to reference the base layer for coding, that is, the base layer is treated as a reference layer of the enhancement layer (or the enhancement layer image can be the base layer) The image is used as a reference image to predictively encode the enhancement layer. Since there is a strong correlation between the enhancement layer and the base layer, the probability that the enhancement layer selects the base layer as a reference is very high, which means that there are a large number of image blocks in the enhancement layer, and the image from the base layer is selected as the reference image. .

For ease of understanding, in the following description, a method of determining a time domain motion vector predictor according to an embodiment of the present invention in multi-view coding will be described as an example.

Also, in the embodiment of the present invention, the base view image is encoded using a short-term type of reference image, and the base layer image is encoded using a short-term type of reference image.

Specifically, the reference image (or the way the reference image is used) can be divided into long-term long-term and short-term short-term. Long-term means, for example, that the background of the still image does not change for a long time, so that the image with a larger distance from the current image on the time axis can also be used as a reference for the current image. Relative to long-term, short-term means that the closer the two images are on the time axis, the higher the correlation, the better the effect as a reference image. Therefore, the reference image of short-term is usually used. Encode.

Hereinafter, for convenience of description, in the embodiment of the present invention, encoding of an image in a base view and a dependent view, for example, an interframe predictive encoding process (including MCP and MV prediction), is encoded using a reference image of a short-term type. Similarly, encoding of images in the base layer and the enhancement layer, for example, an interframe predictive encoding process, including MCP and MV prediction, is encoded using a reference image of a short-term type.

When performing a codec operation on a currently processed image block (current image block, hereinafter referred to as a current block for convenience of explanation), the current block includes two or more motion vectors, and these motion vectors can be utilized, including two or more Obtaining a plurality of reference blocks in the reference image, and thus, for example, may be based on The reference block determines a predicted value (MVP, MV predictor ) of the motion vector of the current block.

In order to save the coding bit overhead of the motion vector of the current block, the MV prediction + coding prediction difference value method is used. First, the predicted value of the motion vector of the current block is obtained by the MV prediction technique, and then the difference between the MV of the current block and the predicted value of the MV is determined, and finally the difference is encoded. The process of obtaining the predicted value of the motion vector of the current block by the MV prediction technique is performed in the same manner in encoding and decoding to obtain the same MV prediction value, and the matching of encoding and decoding is realized.

The predicted value of the motion vector includes the predicted value of the time domain motion vector (TMVP, Temporal MV predictor). The predicted value of the time domain motion vector is the MV value acquired according to the time domain reference image (also referred to as the corresponding image) of the current block, and the so-called time domain refers to the time when the image of the current block and the reference image of the current block are in the video sequence. The axes are at different time positions, which are represented by the POC (Picture Order Count) of the image. The time domain distance of the MV refers to the distance on the time axis between the reference image pointed to by the MV and the image in which the current block is located, that is, the difference of the image POC.

The acquisition of the TMVP process involves the selection of the reference image and the corresponding image of the current block, and the scaling of the MV. In the process of acquiring the TMVP, if the time domain distance of the MV of the current block and the time domain distance of the MV of the corresponding image block of the current block may be different , involving the scaling of the MV, the scaling process is shown in Equation 1.

It should be noted that, for example, in multi-view coding, since the reference image of the current block may come from other views, the reference image may have the same POC as the image in which the current block is located, for example, dependent-view and base-view at a certain moment. The images have the same POC (ie, the POC relationship is the same for the POC), and thus may cause a divisor to occur in the MV scaling process involved in the TMVP acquisition process, ie, POC(currRefPic)- POC(currPic)=0, To avoid this, the reference image from different views is treated as a long-term. For example, the dependent view takes the reference image from the base view as a long-term.

In the embodiment of the present invention, at S110, the encoding end or the decoding end (hereinafter, for convenience of explanation, the encoded end is taken as an example of the implementation main body, which can be explained) may be from an image list (image set) including at least two reference images. , determine currRefPic and colPic. It should be noted that the image set may be composed of a plurality of image lists, or may be only one image list (or image collection), and the present invention is not particularly limited. For example, for a forward predicted image (P-slice, Prediction slice), the reference set is one image list, and for a bi-prediction slice (B-slice, Bi-prediction slice), the image set includes two image lists.

In the embodiment of the present invention, currRefPic may be first determined, and colPic (ie, case 1) may be determined according to the type of currRefPic, or colPic may be determined first, and currRefPic (ie, case 2) is determined according to the type of colPic. The following two cases will be described separately.

Situation 1

Specifically, for example, the encoding end (or the decoding end) can determine an image from the reference image list (image set) as the reference image currRefPic of the current block.

Optionally, the encoding end may determine, from the reference image list, an image with the smallest index number as currRefPic.

It should be understood that the above-listed methods for determining currRefPic are merely exemplary, and the present invention is not limited thereto, and any image in the reference image list may be determined as currRefPic.

And, the encoding end (or the decoding end) can acquire the reference image list using the same method as the prior art.

It should be noted that in order to enable the encoding end and the decoding end to obtain the same TMVP to achieve the matching of encoding and decoding, it is necessary to ensure that the encoding end and the decoding end select the same currRefPic. Therefore, it may be specified that the encoding end and the decoding end select currRefPic according to the same rule, and may also notify the decoding end of the selected currRefPic after the encoding end determines currRefPic (for example, notifying the decoding end as an index of the image of the currRefPic in the reference image list) No.), so that the decoder selects the same currRefPic.

Thereafter, the encoding end may be based on image information of the reference image (image type, image sequence number POC relationship with the image of the current block, belonging layer in hierarchical coding, or belonging in multi-view coding) Any of the information) from the list of reference images, determine colPic.

Situation a Optionally, in the embodiment of the present invention, determining the corresponding image of the current image block from the image set according to the image information of the reference image of the current image block, including:

Based on the image type of the reference image of the current image block, a corresponding image of the current image block is determined from the image set such that the image type of the corresponding image is different from the image type of the reference image.

Specifically, for example, the encoding end may determine, from the attribute information of currRefPic, that the image type of currRefPic is long-term or short-term.

^The mouth currRefPic is a long-term, and the shell ¹ J makes colPic a short-term. ^The mouth currRefPic is short-term, and Bay ¹ J makes colPic a long-term.

Specifically, as described above, in multi-view coding, a reference picture from other views (specifically, a basic view) is regarded as a long-term, and a reference picture from the current view is regarded as a short-term.

Because jH , the example ^ mouth, ^ currRefPic is a short-term, and colPic is a long-term, it means that colPic is a reference image from the base view. As mentioned above, the colRefPic used by the base view (ie colPic) is usually short-term, that is, the colRefPic of the corresponding block colBlock in colPic is short-term. Thus, both currRefPic and colRefPic are short-term, which can improve the effect of acquiring TMVP.

Then 1* column ^, ^ currRefPic is a long-term, and colPic is a short-term, and Bay ¹ J indicates that colPic is a reference image from the current view (dependent view). The current view image (ie colPic) is usually referenced from other views (base view) when encoding, ie the colRefPic of colBlock in colPic is usually a long-term. Thus, currRefPic and colRefPic are usually long-terms, which can improve the effect of acquiring TMVP.

Situation b

Optionally, in the embodiment of the present invention, determining the corresponding image of the current image block from the image set according to the image information of the reference image of the current image block, including:

Determining, according to a POC relationship between the reference image of the current image block and the image of the current block, from the image set, determining a corresponding image of the current image block to make the corresponding image and the current image The POC relationship between the belonging images of the block is different from the POC relationship between the reference image and the image of the current block

Specifically, for example, the encoding end may determine the POC of the currRefPic from the attribute information of the currRefPic, and may determine the POC of the currRefPic from the POC of the currPic from the POC of the image currPic of the current block.

If the POC of the currRefPic is the same as the POC of the currPic, the POC of the colPic is different from the POC of the currPic. If the POC of the currRefPic is different from the POC of the currPic, the POC of the colPic is the same as the POC of the currPic.

Specifically, in the prior art, if the POC of an image (currRefPic or colPic) is the same as the POC of the currPic, it indicates that the image is from the base view or the base layer, indicating that the image type of the image is long-term, If the POC of an image ( currRefPic or colPic ) is different from the POC of currPic, it means that the image is from a dependent view or enhancement layer, indicating that the image type of the image is short-term. The reverse is also true, that is, if the image type of an image ( currRefPic or colPic ) is short-term, it means that the POC of the image is different from the POC of currPic, if the image type of an image (currRefPic or colPic ) is Long-term, which means that the POC of the image is the same as the POC of currPic.

Therefore, for example, if the POC of the selected currRefPic is different from the POC of the currPic, the image type of the currRefPic is short-term, and if the POC of the colPic is the same as the POC of the currPic, the colPic image type is long-term, ie, Indicates that colPic is a reference image from the base view. As mentioned above, the colRefPic used by the base view (ie colPic) is usually short-term, that is, the colRefPic of the corresponding block colBlock in colPic is short-term. Thus, both currRefPic and colRefPic are short-term, which can improve the effect of acquiring TMVP.

For another example, if the POC of the selected currRefPic is the same as the POC of the currPic, the selected currRefPic is a long-term, and the POC of the currRefPic is different from the POC of the currPic, indicating that the colPic is a short-term, that is, a colPic Is from the current view (dependency) Reference image. The current view image (ie, colPic) usually refers to images from other views (base view) when encoding, that is, the colRefPic of colBlock in colPic is usually long-term. Thus, currRefPic and colRefPic are usually long- Term, can improve the effect of acquiring TMVP.

Situation c

And determining, according to the belonging layer of the reference image of the current image block, a corresponding image of the current image block from the image set such that the belonging layer of the corresponding image is different from the associated layer of the reference image.

Specifically, if the current block's currRefPic is from the current layer (enhancement layer), it means that currRefPic is a short-term. At this time, the image from the base layer ( long-term ) is selected as colPic. Since the image from the base layer (including the colPic) is selected at the time of encoding, the reference image comes from the base layer, that is, the reference image is a short-term. Therefore, the corresponding block colBlock ^ colRefPic in colPic is short-term, and colRefPic and currRefPic are short-term.

^ The currRefPic of the current block of the mouth comes from the base layer, indicating that currRefPic is long-term. At this time, the image (short-term) in the current layer (enhancement layer) is selected as colPic. Since the reference picture in the current layer usually uses the inter-prediction to select the base layer as a reference when encoding, the colRefPic of the colPlock of colPic usually comes from the base layer (which is a long-term), that is, both colRefPic and currRefPic are long. -term.

Situation d

And determining, according to the belonging view of the reference image of the current image block, a corresponding image of the current image block from the image set such that the belonging view of the corresponding image is different from the belonging view of the reference image.

Specifically, if the currRefPic of the current block comes from the current view (dependent view), it means that currRefPic is a short-term, and at this time, the image from the base view (long-term) is selected as colPic. Since the image from the base view (including the colPic) is selected at the time of encoding, the reference image is from the base view, that is, the reference image is short-term. Therefore, the corresponding block colBlock ^ colRefPic in colPic is short-term, and colRefPic and currRefPic are short-term.

:3⁄4 The current currRefPic of the current block comes from the base view, which means that currRefPic is long-term. At this time, the image (short-term) in the current view (dependency view) is selected as colPic. Since the reference image in the current view usually uses inter prediction to select the base view as a reference when encoding, the colRefPic of the colPlock of colPic usually comes from the base view (which is a long-term), that is, both colRefPic and currRefPic are long. -term.

Optionally, the image set includes at least two first candidate images, where the type of the first candidate image is different from the image type of the reference image, or

a POC relationship between the first candidate image and the associated image of the current block is different from a POC relationship between the reference image and the image to which the current block belongs, or

The associated layer of the first candidate image is different from the layer to which the reference image belongs, or

The belonging view of the first candidate image is different from the belonging view of the reference image, and

And determining, according to the image information of the reference image of the current image block, the corresponding image of the current image block from the image set, including:

And determining, from the at least two first candidate images, an image with the smallest index number in the image set as the corresponding image of the current image block according to the image information of the reference image of the current image block.

Specifically, when determining that currRefPic is the first type image (the image type short-term or long-term, the POC relationship with the image of the current block is the same or different, and the belonging layer is a base layer or an enhancement layer, After being regarded as a base view or a dependent view, it is necessary to select a second type image (the type is different from the first type image) as the colPic from the first image list, at this time, if the first image list includes a plurality (at least Two) the second type of image (ie, the first candidate image), then one of the plurality of first candidate images may be selected as the colPic, for example, the index numbers of the plurality of first candidate images may be selected The smallest image, as colPic, that is, an image of a type different from currRefPic can be found from the reference image list in ascending order of the reference image index number as colPic.

Thus, the smaller the index number, the closer the image is to the current image, so that the effect of the embodiment of the present invention can be further improved.

It should be understood that, in the above enumeration, the image with the smallest index number in the second type image is selected, and colPic is only an example description, and the present invention is not limited thereto, and any one of the first candidate images may be selected as colPic.

It should be noted that in order to enable the encoding end and the decoding end to obtain the same TMVP to achieve matching between encoding and decoding, it is necessary to ensure that the encoding end and the decoding end select the same colPic. Therefore, it is possible to specify that the encoding end and the decoding end select colPic according to the same rule, or after the encoding end determines colPic, notify the decoding end of the selected colPic, so that the decoding end selects the same colPic.

A method of obtaining a time domain motion vector predictor according to an embodiment of the present invention first determines currRefPic and then determines colPic. Different colPic can be obtained for different image blocks, which has better adaptability and helps to obtain better coding compression performance.

Optionally, the image set includes at least one second candidate image and at least one third candidate image, wherein the second candidate image is different from the image type of the third candidate image, or

a POC relationship between the second candidate image and the associated image of the current block is different from a POC relationship between the third candidate image and the associated image of the current block, or

The belonging layer of the second candidate image is different from the layer to which the third candidate image belongs, or

The belonging view of the second candidate image is different from the belonging view of the third candidate image, and the method further includes:

Determining, from the set of images, a predicted image, the predicted image comprising a second candidate image and a third candidate image, the predicted image being used to determine a corresponding image of each image block in the strip in which the current image block is located; as well as

Determining, according to the type of the reference image, a corresponding image of the current image block from the image set, comprising:

From the predicted image, a corresponding image of the current image block is determined. Specifically, in the embodiment of the present invention, for example, the reference image list includes at least three images (at least one first type image and at least two second type images, or at least one second type image and at least two In the case of the first type image, a first type image and a second type image may be selected in advance from the first image list to constitute a new reference image list (predicted image).

After the currRefPic is determined as described above, according to the image type of the currRefPic, a colPic of a type different from the currRefPic type may be obtained in the predicted image. Since the predicted image includes the first type image and the second type image (ie, the short-term image and the long-term image, or the POC relationship with the associated image of the current block is the same image and the current The POC relationship between the images belonging to the block is a different image, or the image in which the layer belongs to the base layer and the image in which the layer belongs to the enhancement layer, or the image regarded as the base view and the image to which the dependent view is regarded, Therefore, whether currRefPic is a first type image or a second type image, a colPic of a type different from currRefPic can be obtained. Thereby, the codec efficiency can be improved.

Optionally, in the embodiment of the present invention, the method further includes:

Determining, from the image set, a reference image of the second image block, wherein the second image block is in the same strip as the current image block;

Determining, according to a type of the reference image of the second image block, a corresponding image of the second image block from the predicted image, such that a type of the corresponding image of the second image block and a reference image of the second image block The types are different.

Specifically, since each image block of the same slice can use the same corresponding image, when the TMVP of the second image block of the same slice as the current block is acquired, the predicted image can be reused, thereby reducing the processing. The complexity.

Optionally, the set of images includes at least two second candidate images, and/or

The set of images includes at least two third candidate images, and

Determining the predicted image from the image set includes:

Determining, from the set of images, a predicted image, the predicted image including the at least two second alternatives The image with the smallest index number in the image set in the image; and/or

From the set of images, a predicted image is determined, the predicted image comprising an image of the at least two third candidate images having the smallest index number in the set of images.

Specifically, the selected predicted image may be an image having the smallest index number in the first type image and/or an image having the smallest index number among the at least two second type images.

Situation 2

Optionally, the method comprises:

Determining, from the set of images, a target image as a corresponding image of each image block in the strip in which the current image block is located;

And determining, according to the image information of the corresponding image of the current image block, the reference image of the current image block from the image set, including:

Determining, according to an image type of the corresponding image of the current image block, a reference image of the current image block from the image set such that an image type of the reference image is different from an image type of the corresponding image; or

Determining, from the image set, a reference image of the current image block according to a POC relationship between a corresponding image of the current image block and the image of the current block, such that the image of the reference image and the image of the current block The POC relationship between the two is different from the POC relationship between the corresponding image and the image of the current block; or

Determining, from the image set, a reference image of the current image block according to an associated layer of the corresponding image of the current image block, such that the belonging layer of the reference image is different from the belonging layer of the corresponding image; or according to the current image block Corresponding to the belonging view of the image, the reference image of the current image block is determined from the image set such that the belonging view of the reference image is different from the belonging view of the corresponding image.

Specifically, since each image block of the same slice can use the same corresponding image, for example, the encoding end (or the decoding end) can determine an image from the reference image list as the current The corresponding image colPic (target image) of each image block in the slice in which the block is located.

Alternatively, an image with the smallest index number may be determined from the reference image list as colPic. It should be understood that the above-listed methods of determining colPic are merely exemplary, and the present invention is not limited thereto, and any image in the reference image list may be determined as colPic.

It should be noted that in order to enable the encoding end and the decoding end to obtain the same TMVP to achieve the matching of encoding and decoding, it is necessary to ensure that the encoding end and the decoding end select the same colPic. Therefore, it may be specified that the encoding end and the decoding end select colPic according to the same rule, and may also notify the decoding end of the selected colPic after the encoding end determines colPic (for example, notifying the decoding end as the image of the colPic in the first image list. The index number), so that the decoder selects the same colPic.

Thereafter, the encoding end may be based on the image information of the corresponding image (the image type, the POC relationship with the image sequence between the image of the current block, the belonging layer in the layered encoding, or the dependent view in the multi-view encoding). Any of the information) from the list of reference images, determine currRefPic.

Situation e

Optionally, in the embodiment of the present invention, determining the reference image of the current image block from the image set according to the image information of the corresponding image of the current image block, including:

Based on the image type of the corresponding image of the current image block, a reference image of the current image block is determined from the image set such that the image type of the reference image is different from the image type of the corresponding image.

Specifically, for example, the encoding end may determine, from the attribute information of colPic, that the image type of colPic is long-term or short-term.

^The colPic is a long-term, and Bay ¹ J makes currRefPic a short-term. ^The colPic of the mouth is short-term, and the shell ¹ J makes currRefPic a long-term.

Specifically, as described above, in multi-view coding, a corresponding image from another view (specifically, a basic view) is regarded as a long-term, and a corresponding image from the current view is regarded as a short-term.

Because jH, the example ^ mouth, ^ the colPic selected by the word is short-term, and currRefPic is long-term, it means that colPic is the corresponding image from the current view (dependent view). The current view image (ie colPic) usually refers to images from other views (base view) when encoding, that is, the colRefPic of colBlock in colPic is usually long-term. Thus, colPic and colRefPic are usually long-terms, which can improve the effect of acquiring TMVP.

Then 1* column ^ mouth, ^ colPic selected by the word is long-term, and currRefPic is short-term, and shell ¹ J indicates that colPic is the corresponding image from the base view. The colRefPic used by the base view (ie colPic) is usually short-term, that is, the colRefPic of the corresponding block colBlock in colPic is short-term. Therefore, both colPic and colRefPic are short-term, which can improve the effect of acquiring TMVP.

Situation f

Determining, from the image set, a reference image of the current image block according to a POC relationship between a corresponding image of the current image block and the image of the current block, such that the image of the reference image and the image of the current block The POC relationship between the two is different from the POC relationship between the corresponding image and the image of the current block.

Specifically, for example, the encoding end may determine the POC of the colPic from the attribute information of the colPic, and may determine the POC of the colPic from the POC of the currPic from the POC of the image currPic of the current block.

If the POC of colPic is the same as the POC of currPic, the POC of currRefPic is different from the POC of currPic. If the POC of colPic is different from the POC of currPic, the POC of currRefPic is the same as the POC of currPic.

Specifically, in the prior art, if the POC of an image (currRefPic or colPic) is the same as the POC of the currPic, it indicates that the image is from the base view or the base layer, indicating that the image type of the image is long-term, If the POC of an image ( currRefPic or colPic ) is different from the POC of currPic, it means that the image is from a dependent view or enhancement layer, indicating that the image type of the image is short-term. And vice versa, ie if an image of a certain image ( currRefPic or colPic ) If the type is short-term, it means that the POC of the image is different from the POC of currPic. If the image type of a certain image (currRefPic or colPic) is long-term, it means that the POC of the image is the same as the POC of currPic.

Therefore, for example, if the POC of the selected colPic is different from the POC of the currPic, the image type of colPic is short-term, and if the POC of currRefPic is the same as the POC of currPic, the currRefPic image type is long-term. As mentioned above, the colRefPic used by the dependent view (ie colPic) in encoding is usually derived from the base view, that is, the colRefPic of the corresponding block colBlock in currRefPic is long-term. Thus, both colPic and colRefPic are long-term, which can improve the effect of acquiring TMVP.

For another example, if the POC of the selected colPic is the same as the POC of the currPic, the selected colPic is a long-term, and if the POC of the colPic is different from the POC of the currPic, the currRefPic is a short-term, that is, the currRefPic is Corresponding image from the current view (dependency view). The base view image (ie, colPic) uses a short-term reference image when encoding, that is, the colRefPic of colBlock in colPic is usually a short-term. Thus, colPic and colRefPic are usually short-terms, which can improve the effect of acquiring TMVP.

Situation g

A reference image of the current image block is determined from the image set according to an associated layer of the corresponding image of the current image block such that the associated layer of the reference image is different from the associated layer of the corresponding image.

Specifically, if the colPic of the current block comes from the current layer (enhancement layer), it means that colPic is a short-term. At this time, the image from the base layer ( long -term ) is selected as currRefPic„ due to the current layer. Corresponding images usually use inter prediction to select the base layer as a reference when encoding. Therefore, the colRefPic of colPlock of colPic usually comes from the base layer (long-term), that is, both colRefPic and colPic are long-term.

If the colPic of the current block comes from the base layer, it means that colPic is a long-term. Select the image ( short-term ) in the current layer (enhancement layer) as currRefPic. Since the image from the base layer (including the colPic) is selected at the time of encoding, the reference image comes from the base layer, that is, the reference image is short-term. Therefore, the colRefPic of the corresponding block colBlock in colPic is short-term, and colRefPic and colPic are short-term.

Situation h

And determining, according to the belonging view of the corresponding image of the current image block, the reference image of the current image block from the image set such that the belonging view of the reference image is different from the belonging view of the corresponding image.

Specifically, if the colPic of the current block comes from the current view (dependent view), it means that colPic is a short-term. At this time, the image from the base view ( long-term ) is selected as currRefPic. Since the corresponding image in the current view usually uses inter prediction to select the base view as a reference when encoding, the colRefPic of the colBlock in colPic usually comes from the base view (which is long-term), that is, both colRefPic and colPic are Long-term.

If the colPic of the current block comes from the base view, it means that colPic is a long-term. At this time, the image (short-term) in the current view (dependency view) is selected as currRefPic. Since the image from the basic view (including the colPic) is selected at the time of encoding, the reference image comes from the base view, that is, the reference image is a short-term. Therefore, the colRefPic of the corresponding block colBlock in colPic is short-term, and colRefPic and colPic are short-term.

Optionally, the image set includes at least two fourth candidate images, where the type of the fourth candidate image is different from the image type of the reference image, or

a POC relationship between the fourth candidate image and the belonging image of the current block is different from a POC relationship between the reference image and the image to which the current block belongs, or

The belonging layer of the fourth candidate image is different from the layer to which the reference image belongs, or

The belonging view of the fourth candidate image is different from the belonging view of the reference image, and

Determining, according to the image information of the corresponding image, the current image block from the image set Reference images, including:

Based on the image information of the corresponding image, from the at least two fourth candidate images, an image having the smallest index number in the image set is determined as a reference image of the current image block.

Specifically, in determining that colPic is the first type of image (the image type short-term or long-term, the POC relationship with the image of the current block is the same or different, and the belonging layer is a base layer or an enhancement layer, After being regarded as a base view or a dependent view, it is necessary to select a second type image (the type is different from the first type image) as a currRefPic from the reference image list, at this time, if the reference image list includes a plurality (at least two) a second type of image (ie, a fourth candidate image), then one of the plurality of fourth candidate images may be selected as a currRefPic, for example, a plurality of fourth candidate images may be selected with the smallest index number The image, as currRefPic, that is, the colRefPic can be found from the reference image list in the order of the reference image index numbers from small to large.

It should be understood that, as listed above, the image with the smallest index number in the fourth candidate image is selected, and currRefPic is only an example description, and the present invention is not limited thereto, and any one of the second candidate images may be selected as currRefPic.

The method for obtaining a time domain motion vector predictor according to an embodiment of the present invention first determines the colPic of the current block, and then determines the currRefPic of the current block. Since the colPic of each image block in the same slice is the same, the determined currRefPic is also the same, and the determination is performed once in the same slice, which can effectively reduce the processing complexity. In addition, the same colPic is used for all image blocks in the entire slice, which can effectively reduce the occupation of cache resources.

According to the method for determining a time domain motion vector predictor according to an embodiment of the present invention, by selecting a reference image of the current block and a corresponding image, the reference image of the current block and the image type of the corresponding image and the image block of the current block are The POC relationship, the belonging layer or the view is different, and the effect of making the reference image of the current block and the reference image of the corresponding image block belong to the same reference image type can be improved. Therefore, in the case where the time domain distance of the motion vector of the current block and the time domain distance of the motion vector of the corresponding block are different, the effect of acquiring the time domain motion vector predictor of the current block can be improved.

It should be understood that, according to the image information of the image in the image set, the reference image and the corresponding image of the current image block are determined from the image set, so that the reference image of the current block and the image type of the corresponding image, and the current block are The POC relationship between the associated image blocks, the associated layer or the different embodiments are not limited thereto. Other embodiments that use the image information according to the image in the image set to determine the reference image and the corresponding image of the current image block to improve the effect of acquiring the temporal motion vector predictor of the current block fall within the scope of the present invention.

For example, if the corresponding image of the selected current block is short-term, it means that the corresponding image is from the current view or the current layer (non-base view or basic increase), if the current view or current layer does not use the base view or the base layer For reference, and using the reference image of short-term, that is, colRefPic is short-term, you can select the short-term image as currRefPic.

For another example, when the base view or the base layer uses the long-term reference image, if the selected currRefPic is a long-term and colPic is a long-term, the shell ¹ J indicates that the colPic is a reference image from the base view. As described above, the colRefPic used by the base view (ie, colPic) is long-term, that is, the colRefPic of the corresponding block colBlock in colPic is a long-term. Thus, both currRefPic and colRefPic are long-term, which can improve the effect of acquiring TMVP.

Moreover, in the embodiment of the present invention, there may be one or more dependent images, and the current block may refer to the image of the base view, and may also refer to other dependent images. Similarly, there may be one or more enhancement layers. The current block can refer to the image of the base layer or the image of other enhancement layers.

At S120, a corresponding image block of the current image block in the corresponding image may be determined, and the process and method of determining the corresponding image block may be the same as in the prior art, and the description thereof is omitted here to avoid redundancy.

At S130, a time domain motion vector predictor of the current image block may be determined according to the reference image and the corresponding image block, and specifically, a motion vector MV of the corresponding image block may be acquired, and If the time domain distance of the MV of the current block is different from the time domain distance of the MV of the corresponding image block of the current block, the scaling of the MV may be performed according to the reference image and the corresponding image block using Equation 1 above.

Optionally, in the embodiment of the present invention, the belonging image of the current image block is a bidirectional predicted image, and the corresponding image is a bidirectional predicted image, and

Determining a time domain motion vector prediction value of the current image block according to the reference image and the corresponding image block, including:

Determining a motion vector of the corresponding image block according to the image information of the corresponding image;

A time domain motion vector predictor of the current image block is determined based on the reference image and a motion vector of the corresponding image block.

And determining the motion vector of the corresponding image block, further comprising:

When the image type of the corresponding image is a long-term type, if the reference image of the current image block is from the first reference image list of the image of the current image block, determining a motion vector of the corresponding image block, so that the corresponding image The image pointed by the motion vector of the block belongs to the first reference image list of the corresponding image, and if the reference image of the current image block is from the second reference image list of the belonging image of the current image block, determining the motion vector of the corresponding image block , such that the image pointed to by the motion vector of the corresponding image block belongs to the second reference image list of the corresponding image; or

When the POC of the corresponding image is the same as the POC of the image of the current image block, if the reference image of the current image block is from the first reference image list of the image of the current image block, determining the motion of the corresponding image block Vector, such that the image pointed by the motion vector of the corresponding image block belongs to the first reference image list of the corresponding image, and if the reference image of the current image block is from the second reference image list of the belonging image of the current image block, Determining a motion vector of the corresponding image block such that the image pointed by the motion vector of the corresponding image block belongs to the second reference image list of the corresponding image; or

When the belonging layer of the corresponding image is the base layer, if the reference image of the current image block is from the first reference image list of the image of the current image block, determining a motion vector of the corresponding image block, so that the corresponding image The image pointed to by the motion vector of the block belongs to the image of the corresponding image a first reference image list, if the reference image of the current image block is from a second reference image list of the belonging image of the current image block, determining a motion vector of the corresponding image block to point the motion vector of the corresponding image block The image belongs to a second reference image list of the corresponding image; or

When the belonging of the corresponding image is regarded as a base view, if the reference image of the current image block is from the first reference image list of the belonging image of the current image block, determining a motion vector of the corresponding image block, so that the corresponding image The image of the corresponding image pointed by the motion vector of the block belongs to the first reference image list, and if the reference image of the current image block is from the second reference image list of the belonging image of the current image block, the motion vector of the corresponding image block is determined. And causing the image pointed by the motion vector of the corresponding image block to belong to the second reference image list of the corresponding image.

Specifically, in the prior art, when TMVP is acquired, a reference image having an index number of 0 is designated as a reference image of the current block. For B-slice, two reference images can be selected, which are the reference image with the index number 0 in the first reference image list (list 0 ) and the second reference image list (list 1 ).

And, the corresponding image of the current block includes two MVs, that is, colMV_L0 and colMV_L1, and uses colPic corresponding list to select colMV_L1 in colMV_L0 as a predicted value of the MV. If colPic is from list 0, select collMV_L1 pointing to list 1; if colPic is from list 1, select colMV_L0 pointing to list 0.

In a case where, for example, the POC of colPic is not equal to the POC of the current image (ie, before or after the colPic is located in the current image, or colPic is from the current view image), the list corresponding to colPic has a certain correspondence with the currMV of the current block. That is, the list of colPic is list 1 indicating that colPic is located after the current image. At this time, colMV_L0 pointing to list O may pass through the current image, that is, colMV_L0 has higher correlation with currMV of the current block. So choose colMV_L0.

However, if colPic comes from the base view or base layer (ie, the image type of colPic is long-term, or the POC of colPic is the same as the POC of the currPic), there is no between the list corresponding to colPic and the current block currMV. The determined relationship does not help to select the appropriate colMV for calculating the currMV of the current block. Conversely, if the selected reference block of the current block is selected from the list Different from the list pointed to by the selected colMV, it will seriously affect the acquisition of TMVP.

Therefore, in the embodiment of the present invention, colMV may be selected according to the list corresponding to the current block, and after the reference image currRefPic of the current block is determined, the corresponding list of the current block may be determined according to the list from which currRefPic is derived. The reference index in the list.

Specifically, if the list corresponding to the current block is list 0 (first reference image list), colMV_L0 pointing to list 0 is selected.

If the list corresponding to the current block is list 1 (second reference image list), select collMV_L1 pointing to list 1.

Thus, the current block and the corresponding block have the same POC and have the same MV direction, and the MV correlation between the two is higher, which helps to improve the accuracy of TMVP prediction.

FIG. 3 shows a schematic flow diagram of a method 200 of determining a time domain motion vector predictor in accordance with an embodiment of the present invention. Moreover, the implementation body of the method 200 may be an encoding end or a decoding end, and the present invention is not particularly limited. As shown in FIG. 3, the method 200 includes:

S210, determining a reference image and a corresponding image of the current image block, where the image of the current image block is a bidirectional predicted image, and the corresponding image is a bidirectional predicted image;

S220. Determine a corresponding image block of the current image block in the corresponding image.

S230. Determine, according to image information of the corresponding image, a motion vector of the corresponding image block, where the image information includes any of the following information: an image type, an image sequence number POC relationship with an image of the current block, and a layering Any information in the encoding of the affiliation layer or the dependent view in the multi-view coding, the image type is divided into a long-term type and a short-term type, and the POC relationship is divided into a POC and a POC, and the affiliation layer is divided into a basic layer. And an enhancement layer, the belonging view is a base view and a dependent view;

S240. Determine a time domain motion vector predictor of the current image block according to the reference image and a motion vector of the corresponding image block.

Moreover, in the embodiment of the present invention, determining the motion vector of the corresponding image block further includes:

When the image type of the corresponding image is a long-term type, if the reference image of the current image block And determining, by the first reference image list of the image of the current image block, the motion vector of the corresponding image block, so that the image of the corresponding image pointed by the motion vector of the corresponding image block belongs to the first reference image list, if The reference image of the current image block is from the second reference image list of the image of the current image block, and then the motion vector of the corresponding image block is determined such that the image pointed by the motion vector of the corresponding image block belongs to the second of the corresponding image. Reference image list; or

When the belonging layer of the corresponding image is the base layer, if the reference image of the current image block is from the first reference image list of the image of the current image block, determining a motion vector of the corresponding image block, so that the corresponding image The image pointed by the motion vector of the block belongs to the first reference image list of the corresponding image, and if the reference image of the current image block is from the second reference image list of the belonging image of the current image block, determining the motion vector of the corresponding image block , such that the image pointed to by the motion vector of the corresponding image block belongs to the second reference image list of the corresponding image; or

When the belonging of the corresponding image is regarded as a base view, if the reference image of the current image block is from the first reference image list of the belonging image of the current image block, determining a motion vector of the corresponding image block, so that the corresponding image The image pointed by the motion vector of the block belongs to the first reference image list of the corresponding image, and if the reference image of the current image block is from the second reference image list of the belonging image of the current image block, determining the motion vector of the corresponding image block And causing the image pointed by the motion vector of the corresponding image block to belong to the second reference image list of the corresponding image.

Specifically, in the prior art, when acquiring TMVP, a reference image having an index number of 0 is designated as a reference image of the current block. For B-slice, you can select two reference images, respectively A reference image of index number 0 in the first reference image list (list 0 ) and the second reference image list (list 1 ).

As shown in FIG. 4, in the case where, for example, the POC of colPic is not equal to the POC of the current image (ie, before or after the colPic is located in the current image, or colPic is from the current view image), the list corresponding to colPic and the currMV of the current block. There is a certain correspondence, that is, the list of colPic is list 1 indicating that colPic is located after the current image. At this time, colMV_L0 pointing to list O may pass through the current image, that is, colMV-LO and the current block currMV is more relevant, so choose colMV_L0.

However, as shown in FIG. 5, if colPic comes from the base view or the base layer (ie, the image type of colPic is long-term, or the POC of colPic is the same as the POC of the currPic), at this time, the list and current of colPic There is no definite relationship between the blocks currMV, which does not help to select the appropriate colMV for calculating the currMV of the current block. Conversely, if the selected list of reference images for the current block differs from the list pointed to by the selected colMV, the acquisition of TMVP is severely affected.

Therefore, in the embodiment of the present invention, if the colPic is from the base view or the base layer (that is, the image type of the colPic is long-term, or the POC of the colPic is the same as the POC of the currPic), the list corresponding to the current block may be used. To select colMV, and since the reference image currRefPic of the current block is determined, the corresponding list of the current block and the reference index in the list may be determined according to the list from which currRefPic is derived.

If the list corresponding to the current block is list 1 (second reference image list), select collMV_L1 pointing to list 1. In this way, the current block and the corresponding block have the same POC and have the same MV direction, and the MV correlation between the two is higher, which helps to improve the TMVP prediction accuracy.

It should be understood that, as listed above, if colPic is from the base view or the base layer, colMV may be selected according to the list corresponding to the current block, but the present invention is not limited thereto, and the colPic is from the current view (dependency view) or In the case of the current layer (enhancement layer), it is also possible to select colMV according to the list corresponding to the current block.

The method for determining the predicted value of the time domain motion vector in the embodiment of the present invention is described above with reference to FIG. 1 to FIG. 5. Hereinafter, the apparatus for determining the predicted value of the time domain motion vector according to the embodiment of the present invention will be described with reference to FIG. 6 and FIG.

FIG. 6 shows a schematic block diagram of an apparatus 300 for determining a time domain motion vector predictor in accordance with an embodiment of the present invention. As shown in Figure 6, the apparatus 300 includes:

The determining unit 310 is configured to determine, according to image information of the reference image of the current image block, a corresponding image of the current image block from the image set, where the image information includes any of the following information: an image type, and the current block The image sequence number POC relationship between the images to which they belong, the belonging layer in hierarchical coding, or the dependent view in multi-view coding. The image type is divided into long-term type and short-term type. The POC relationship is divided into POC and POC. Different, the belonging layer is divided into a base layer and an enhancement layer, and the belonging view is a base view and a dependent view; or

Determining, from the image set, a reference image of the current image block according to image information of a corresponding image of the current image block, wherein the image information includes any of the following information: an image type, and an image of the current block The image sequence number between the POC relationship, the layer to which the image belongs in layered coding, or the attribute in the multi-view code. The image type is divided into a long-term type and a short-term type. The POC relationship is divided into POC and POC. The belonging layer is divided into a base layer and an enhancement layer, and the belonging view is a base view and a dependent view;

The processing unit 320 is configured to determine a corresponding image block of the current image block in the corresponding image, and configured to determine a time domain motion vector predictor of the current image block according to the reference image and the corresponding image block. Optionally, the current image block is a dependent view image, the image set includes a base view image corresponding to the dependent view, or

Optionally, the determining unit 310 is specifically configured to determine, according to an image type of the reference image of the current image block, a corresponding image of the current image block from the image set, so that an image type of the corresponding image and the reference image are Image types are different; or

And determining, according to a POC relationship between the reference image of the current image block and the image of the current block, from the image set, determining a corresponding image of the current image block, so that the corresponding image belongs to the current block The POC relationship between the images is different from the POC relationship between the reference image and the image to which the current block belongs; or

And determining, according to the belonging layer of the reference image of the current image block, a corresponding image of the current image block from the image set, such that the belonging layer of the corresponding image is different from the belonging layer of the reference image; or

Optionally, the image set includes at least two first candidate images, wherein the type of the first candidate image is different from the image type of the reference image, or

The determining unit 310 is specifically configured to determine, from the at least two first candidate images, an image with the smallest index number in the image set as the corresponding image of the current image block according to the image information of the reference image.

Optionally, the image set includes at least one second candidate image and at least one third alternative image Image, wherein the second candidate image is different from the image type of the third candidate image, or a POC relationship between the second candidate image and the image of the current block, and the third candidate The POC relationship between the image and the image of the current block is different, or

The belonging view of the second candidate image is different from the belonging view of the third candidate image, and the determining unit 310 is further configured to determine, from the image set, a predicted image, where the predicted image includes a second candidate image. And a third candidate image, the predicted image being used to determine a corresponding image of each image block in the strip in which the current image block is located;

For determining a corresponding image of the current image block from the predicted image.

The set of images includes at least two third candidate images, and

The determining unit 310 is specifically configured to determine, from the image set, a predicted image, where the predicted image includes an image with the smallest index number in the image set of the at least two second candidate images; and/or for In the image set, a predicted image is determined, the predicted image including an image of the at least two third candidate images having the smallest index number in the image set.

Optionally, the determining unit 310 is specifically configured to determine, from the image set, a target image as a corresponding image of each image block in a strip in which the current image block is located;

And determining, according to an image type of the corresponding image of the current image block, a reference image of the current image block from the image set such that an image type of the reference image is different from an image type of the corresponding image; or

And determining, from the image set, a reference image of the current image block according to a POC relationship between the image of the current image and the image of the current image, so that the reference image and the current block belong to The POC relationship between the images is different from the POC relationship between the corresponding image and the image of the current block; or

Determining, from the image set, a reference image of the current image block according to an belonging layer of the corresponding image of the current image block, such that the belonging layer of the reference image is different from the belonging layer of the corresponding image; or

And determining, according to the belonging view of the corresponding image of the current image block, a reference image of the current image block from the image set such that the belonging view of the reference image is different from the belonging view of the corresponding image.

Optionally, the image set includes at least two fourth candidate images, wherein the type of the fourth candidate image is different from the image type of the reference image, or

The determining unit 310 is specifically configured to determine, from the at least two fourth candidate images, an image with the smallest index number in the image set as the reference image of the current image block according to the image information of the corresponding image.

Optionally, the image to which the current image block belongs is a bidirectional predicted image, and the corresponding image is a bidirectional predicted image, and

The processing unit 320 is specifically configured to determine a motion vector of the corresponding image block according to the image information of the corresponding image;

And determining a time domain motion vector predictor of the current image block according to the reference image and a motion vector of the corresponding image block. Optionally, the processing unit 320 is configured to: when the image type of the corresponding image is a long-term type, if the reference image of the current image block is from the first reference image list of the image of the current image block, determining Corresponding to the motion vector of the image block, such that the image pointed by the motion vector of the corresponding image block belongs to the first reference image list of the corresponding image, if the reference image of the current image block is from the second image of the current image block Referring to the image list, determining a motion vector of the corresponding image block such that the image pointed by the motion vector of the corresponding image block belongs to the second reference image list of the corresponding image; or And when the POC of the corresponding image is the same as the POC of the image of the current image block, if the reference image of the current image block is from the first reference image list of the image of the current image block, determining the corresponding image block Motion vector, such that the image pointed by the motion vector of the corresponding image block belongs to the first reference image list of the corresponding image, if the reference image of the current image block is from the second reference image list of the belonging image of the current image block And determining a motion vector of the corresponding image block such that the image pointed by the motion vector of the corresponding image block belongs to the second reference image list of the corresponding image; or

For determining that the associated image of the current image is the base layer, if the reference image of the current image block is from the first reference image list of the image of the current image block, determining a motion vector of the corresponding image block, so that the The image of the image corresponding to the motion vector of the corresponding image block belongs to the first reference image list, and if the reference image of the current image block is from the second reference image list of the image of the current image block, the corresponding image is determined. a motion vector of the block such that an image pointed by the motion vector of the corresponding image block belongs to the second reference image list of the corresponding image; or for when the belonging of the corresponding image is regarded as a base view, if the current image block is referenced And determining, by the first reference image list of the image of the current image block, the motion vector of the corresponding image block, so that the image of the corresponding image pointed by the motion vector of the corresponding image block belongs to the first reference image list, if The reference image of the current image block is from the image of the current image block A second reference picture list, it is determined that the motion vector corresponding to the image block, so that the image corresponding to the image block belonging to the second motion vector points to the reference picture list corresponding images.

The apparatus 300 for determining the time domain motion vector predictor according to the embodiment of the present invention, as an implementation body of the method 100 for determining the time domain motion vector predictor, may correspond to the encoding end in the method of the embodiment of the present invention or The decoding end, and the modules in the apparatus 300 for determining the time domain motion vector predictor in FIG. 6 and the other operations and/or functions described above are respectively used to implement the processes of the method 100 in FIG. 2, for the sake of brevity, I will not repeat them here.

The apparatus for determining a time domain motion vector predictor according to an embodiment of the present invention, by selecting a reference image and a corresponding image of a current block, causing a reference image of the current block and an image type of the corresponding image, and The POC relationship between the associated image blocks of the previous block, the associated layer or the view is different, and the effect of making the reference image of the current block and the reference image of the corresponding image block belong to the same reference image type can be improved, thereby In the case where the time domain distance of the motion vector of the block is different from the time domain distance of the motion vector of the corresponding block, the effect of acquiring the predicted value of the time domain motion vector of the current block can be improved.

FIG. 7 shows a schematic block diagram of an apparatus 400 for determining a time domain motion vector predictor in accordance with an embodiment of the present invention. As shown in Figure 7, the apparatus 400 includes:

a determining unit 410, configured to determine a reference image and a corresponding image of the current image block, where the belonging image of the current image block is a bidirectional predicted image, and the corresponding image is a bidirectional predicted image;

Determining a corresponding image block of the current image block in the corresponding image;

The processing unit 420 is configured to determine, according to the image information of the corresponding image, a motion vector of the corresponding image block, where the image information includes any of the following information: an image type, and an image sequence number POC relationship with the image of the current block The image type is classified into a long-term type and a short-term type, and the POC relationship is divided into a POC and a POC, and the belonging layer is different. Divided into a basic layer and an enhancement layer, the belonging view is a basic view and a dependent view;

And determining a time domain motion vector predictor of the current image block according to the reference image and a motion vector of the corresponding image block.

Optionally, the processing unit 420 is specifically configured to: when the image type of the corresponding image is a long-term type, if the reference image of the current image block is from the first reference image list of the image of the current image block, determining the corresponding a motion vector of the image block such that the image pointed to by the motion vector of the corresponding image block belongs to the first reference image list of the corresponding image, if the reference image of the current image block is from the second reference of the associated image of the current image block Image list, determining a motion vector of the corresponding image block such that the image pointed by the motion vector of the corresponding image block belongs to the second reference image list of the corresponding image; or

For when the POC of the corresponding image is the same as the POC of the belonging image of the current image block, if the reference image of the current image block is from the first reference image of the belonging image of the current image block a list, the motion vector of the corresponding image block is determined such that the image pointed by the motion vector of the corresponding image block belongs to the first reference image list of the corresponding image, if the reference image of the current image block is from the current image block a second reference image list of the image, determining a motion vector of the corresponding image block such that the image pointed by the motion vector of the corresponding image block belongs to the second reference image list of the corresponding image; or

The apparatus 400 for determining the time domain motion vector predictor according to the embodiment of the present invention, as an implementation body of the method 200 for determining the time domain motion vector predictor, may correspond to the encoding end in the method of the embodiment of the present invention or The decoding end, and the modules in the apparatus 400 for determining the time domain motion vector predictor in FIG. 7 and the other operations and/or functions described above are respectively used to implement the processes of the method 200 in FIG. 3, for the sake of brevity, I will not repeat them here.

It should be understood that the term "and/or" in this context is merely an association describing the associated object, indicating that there may be three relationships, for example, A and / or B, which may indicate: A exists separately, and A and B exist simultaneously. There are three cases of B alone. In addition, the character "," in this article, generally means that the contextual object is an "or" relationship. It should be understood that, in various embodiments of the present invention, the size of the sequence numbers of the above processes does not mean the order of execution, and the order of execution of each process should be determined by its function and internal logic, and should not be taken to the embodiments of the present invention. The implementation process constitutes any limitation.

Those of ordinary skill in the art will appreciate that the elements and algorithm steps of the various examples described in connection with the embodiments disclosed herein can be implemented in a combination of electronic hardware or computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods for implementing the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present invention.

A person skilled in the art can clearly understand that the specific working process of the system, the device and the unit described above can be referred to the corresponding process in the foregoing method embodiments for the convenience and brevity of the description, and details are not described herein again.

In the several embodiments provided herein, it should be understood that the disclosed systems, devices, and methods may be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not executed. In addition, the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be electrical, mechanical or otherwise.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solution of the embodiment.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

The function is implemented in the form of a software functional unit and sold or used as a standalone product It can be stored on a computer readable storage medium. Based on such understanding, the technical solution of the present invention, which is essential or contributes to the prior art, or a part of the technical solution, may be embodied in the form of a software product, which is stored in a storage medium, including The instructions are used to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention. The foregoing storage medium includes: a U disk, a removable hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and the like, which can store program codes. .

The above is only the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention. It should be covered by the scope of the present invention. Therefore, the scope of the invention should be determined by the scope of the appended claims.

Claims

Claim

A method for determining a predicted value of a time domain motion vector, the method comprising: determining, according to image information of a reference image of a current image block, a corresponding image of the current image block from an image set, wherein The image information includes any of the following: an image type, an image sequence number POC relationship with an image of the current block, an associated layer in hierarchical coding, or an affiliated view in multi-view coding. The image type is divided into a long-term type and a short-term type, and the POC relationship is divided into a POC and a POC, and the belonging layer is divided into a base layer and an enhancement layer, and the belonging view is divided into a base view and a dependent view; or

Determining, from the image set, a reference image of the current image block according to image information of a corresponding image of the current image block, wherein the image information includes any of the following information: an image type, and an image of the current block The image sequence number POC relationship, the belonging layer of the image in hierarchical coding or the dependent view in the multi-view coding, the image type is divided into a long-term type and a short-term type, and the POC relationship is divided into POC and POC Different, the belonging layer is divided into a base layer and an enhancement layer, and the belonging view is a base view and a dependent view;

Determining a time domain motion vector predictor of the current image block based on the reference image and the corresponding image block.

2. The method according to claim 1, wherein the current image block is an image block in a dependent view image, the image set includes a base view image corresponding to the dependent view, or The current image block is an image block in the enhancement layer image, the image collection including an image of the base layer corresponding to the enhancement layer image.

The method according to claim 1 or 2, wherein the determining, according to the image information of the reference image of the current image block, the corresponding image of the current image block from the image set, comprises:

Determining, according to an image type of the reference image of the current image block, a corresponding image of the current image block from the image set, such that an image type of the corresponding image and an image class of the reference image Different type; or

Determining, from the image set, a corresponding image of the current image block according to a POC relationship between a reference image of the current image block and an image of the current block, to make the corresponding image and the current image The POC relationship between the belonging images of the block is different from the POC relationship between the reference image and the image of the current block; or

Determining, from the image set, a corresponding image of the current image block according to a layer to which the reference image of the current image block belongs, such that an associated layer of the corresponding image is different from a layer to which the reference image belongs; or

And determining, according to the belonging view of the reference image of the current image block, a corresponding image of the current image block from the image set such that an belonging view of the corresponding image is different from an belonging view of the reference image.

The method according to claim 3, wherein the image set includes at least two first candidate images, wherein a type of the first candidate image is different from an image type of the reference image Different, or

a POC relationship between the image of the first candidate image and the image of the current block, and a POC relationship between the image of the reference image and the image of the current block, or

The associated layer of the first candidate image is different from the associated layer of the reference image, or

Determining, according to the image information of the reference image of the current image block, the corresponding image of the current image block from the image set, including:

And determining, from the at least two first candidate images, an image having the smallest index number in the image set as a corresponding image of the current image block according to image information of a reference image of the current image block.

5. The method according to claim 3, wherein the image set comprises at least one second candidate image and at least one third candidate image, wherein the second candidate image and the third The image type of the alternate image is different, or

a POC relationship between the image of the second candidate image and the image of the current block, and a POC relationship between the image of the third candidate image and the image of the current block, or The belonging layer of the second candidate image is different from the belonging layer of the third candidate image, or the belonging view of the second candidate image is different from the belonging view of the third candidate image, and The method further includes:

Determining, from the set of images, a predicted image, the predicted image comprising a second candidate image and a third candidate image, the predicted image being used to determine each image block in the strip in which the current image block is located Corresponding image;

Determining, according to the type of the reference image, the corresponding image of the current image block from the image set, including:

From the predicted image, a corresponding image of the current image block is determined.

6. The method of claim 5, wherein the set of images comprises at least two second candidate images, and/or

The set of images includes at least two third candidate images, and

Determining the predicted image from the image set includes:

Determining, from the set of images, a predicted image, the predicted image comprising an image having the smallest index number in the set of images in the at least two second candidate images; and/or

The method according to claim 3, wherein the method comprises:

Determining, from the set of images, a target image as a corresponding image of each image block in a strip in which the current image block is located;

Determining the reference image of the current image block from the image set according to the image information of the corresponding image of the current image block, including:

Determining, from the image set, a reference image of the current image block according to an image type of a corresponding image of the current image block such that an image type of the reference image is different from an image type of the corresponding image; or

According to a POC relationship between a corresponding image of the current image block and an image of the current block, Determining, from the image set, a reference image of the current image block such that a POC relationship between the reference image and an image of the current block belongs to and a corresponding image of the current image The POC relationship between images is different; or

Determining, from the image set, a reference image of the current image block according to an associated layer of the corresponding image of the current image block, such that the belonging layer of the reference image is different from the associated layer of the corresponding image; or

And determining, according to the belonging view of the corresponding image of the current image block, a reference image of the current image block from the image set such that an belonging view of the reference image is different from an belonging view of the corresponding image.

The method according to claim 7, wherein the image set includes at least two fourth candidate images, wherein a type of the fourth candidate image is different from an image type of the corresponding image Different, or

a POC relationship between the fourth candidate image and the belonging image of the current block is different from a POC relationship between the corresponding image and the image of the current block, or

The belonging layer of the fourth candidate image is different from the belonging layer of the reference image, or

Determining the reference image of the current image block from the image set according to the image information of the corresponding image, including:

And determining, from the at least two fourth candidate images, an image having the smallest index number in the image set as a reference image of the current image block, according to the image information of the corresponding image.

The method according to any one of claims 1 to 8, wherein the image to which the current image block belongs is a bidirectional predicted image, the corresponding image is a bidirectional predicted image, and

Determining a time domain motion vector predictor of the current image block according to the reference image and the corresponding image block, including:

Determining, according to the image information of the corresponding image, a motion vector of the corresponding image block; determining a time domain motion vector predictor of the current image block according to the reference image and a motion vector of the corresponding image block.

The method according to claim 9, wherein the determining the motion vector of the corresponding image block according to the image information of the corresponding image comprises:

When the image type of the corresponding image is a long-term type, if the reference image of the current image block is from the first reference image list of the belonging image of the current image block, determining a motion vector of the corresponding image block, so that And the image pointed by the motion vector of the corresponding image block belongs to the first reference image list of the corresponding image, and if the reference image of the current image block is from the second reference image list of the image of the current image block, Determining a motion vector of the corresponding image block such that an image pointed by the motion vector of the corresponding image block belongs to a second reference image list of the corresponding image; or

And when the POC of the corresponding image is the same as the POC of the image of the current image block, if the reference image of the current image block is from the first reference image list of the image of the current image block, determining the corresponding a motion vector of the image block, such that the image pointed by the motion vector of the corresponding image block belongs to the first reference image list of the corresponding image, if the reference image of the current image block is from the image of the current image block a second reference image list, determining a motion vector of the corresponding image block such that the image pointed by the motion vector of the corresponding image block belongs to the second reference image list of the corresponding image; or

When the associated layer of the corresponding image is the base layer, if the reference image of the current image block is from the first reference image list of the belonging image of the current image block, determining a motion vector of the corresponding image block, so that And the image pointed by the motion vector of the corresponding image block belongs to the first reference image list of the corresponding image, and if the reference image of the current image block is from the second reference image list of the image of the current image block, Determining a motion vector of the corresponding image block such that an image pointed by the motion vector of the corresponding image block belongs to a second reference image list of the corresponding image; or

When the belonging of the corresponding image is regarded as a base view, if the reference image of the current image block is from the first reference image list of the belonging image of the current image block, determining a motion vector of the corresponding image block, so that And the image pointed by the motion vector of the corresponding image block belongs to the first reference image list of the corresponding image, and if the reference image of the current image block is from the second reference image list of the image of the current image block, Determining a motion vector of the corresponding image block to make the corresponding image The image pointed by the motion vector of the block belongs to the second reference image list of the corresponding image.

A method for determining a predicted value of a time domain motion vector, the method comprising: determining a reference image of a current image block and a corresponding image, wherein the image of the current image block is a bidirectional predicted image, The corresponding image is a bidirectional predicted image;

Determining, according to the image information of the corresponding image, a motion vector of the corresponding image block, where the image information includes any of the following information: an image type, an image sequence number POC relationship with an image of the current block, and The affiliation layer in the layered coding or the affiliation in the multi-view coding, the image type is divided into a long-term type and a short-term type, and the POC relationship is divided into a POC and a POC, and the affiliation layer is divided into a basic layer. And an enhancement layer, the belonging view is a base view and a dependent view;

Determining a time domain motion vector predictor of the current image block based on the reference image and a motion vector of the corresponding image block.

The method according to claim 11, wherein the determining the motion vector of the corresponding image block according to the image information of the corresponding image comprises:

And when the POC of the corresponding image is the same as the POC of the image of the current image block, if the reference image of the current image block is from the first reference image list of the image of the current image block, determining the corresponding a motion vector of the image block, such that the image pointed by the motion vector of the corresponding image block belongs to the first reference image list of the corresponding image, if the reference image of the current image block is from the image of the current image block a second reference image list, determining a motion vector of the corresponding image block such that an image pointed by the motion vector of the corresponding image block belongs to the corresponding image Second reference image list; or

When the associated layer of the corresponding image is the base layer, if the reference image of the current image block is from the first reference image list of the belonging image of the current image block, determining the motion vector pointing of the corresponding image block, And causing the image of the motion vector of the corresponding image block to belong to the first reference image list of the corresponding image, and if the reference image of the current image block is from the second reference image list of the belonging image of the current image block, Determining a motion vector of the corresponding image block such that an image pointed by the motion vector of the corresponding image block belongs to a second reference image list of the corresponding image; or

When the belonging of the corresponding image is regarded as a base view, if the reference image of the current image block is from the first reference image list of the belonging image of the current image block, determining a motion vector of the corresponding image block, so that And the image pointed by the motion vector of the corresponding image block belongs to the first reference image list of the corresponding image, and if the reference image of the current image block is from the second reference image list of the image of the current image block, A motion vector of the corresponding image block is determined such that an image pointed by the motion vector of the corresponding image block belongs to a second reference image list of the corresponding image.

An apparatus for determining a time domain motion vector predictor, the apparatus comprising: a determining unit, configured to determine the current image block from an image set according to image information of a reference image of a current image block Corresponding image, wherein the image information includes any of the following: an image type, an image sequence number POC relationship with an image of the current block, an associated layer in hierarchical coding, or in multi-view coding The image type is divided into a long-term type and a short-term type, and the POC relationship is divided into a POC and a POC, and the belonging layer is divided into a basic layer and an enhancement layer, and the belonging video is divided into a basic view and a Dependent; or

Determining, from the image set, a reference image of the current image block according to image information of a corresponding image of the current image block, wherein the image information includes any of the following information: an image type, and a belonging of the current block Image sequence number POC relationship between images, belonging layer of an image in hierarchical coding or belonging in multi-view coding, the image type is divided into a long-term type and a short-term type,

The POC relationship is divided into the same POC and the POC, and the belonging layer is divided into a base layer and an enhancement layer, and the belonging view is divided into a base view and a dependent view; a processing unit, configured to determine a corresponding image block of the current image block in the corresponding image; and configured to determine a time domain motion vector predictor of the current image block according to the reference image and the corresponding image block.

14. The apparatus according to claim 13, wherein the current image block is a dependent view image, the image set includes a base view image corresponding to the dependent view, or

The current image block is an image block in an enhancement layer image, the image collection including an image of a base layer corresponding to the enhancement layer image.

The device according to claim 13 or 14, wherein the determining unit is configured to determine, according to an image type of a reference image of a current image block, a correspondence of the current image block from the image set. An image such that an image type of the corresponding image is different from an image type of the reference image; or

Determining, from the image set, a corresponding image of the current image block according to a POC relationship between a reference image of a current image block and an associated image of the current block, such that the corresponding image is The POC relationship between the images belonging to the current block is different from the POC relationship between the reference image and the image of the current block; or

Determining, from the image set, a corresponding image of the current image block according to an associated layer of the reference image of the current image block, such that the belonging layer of the corresponding image is different from the belonging layer of the reference image; Or

The device according to claim 15, wherein the image set includes at least two first candidate images, wherein a type of the first candidate image is different from an image type of the reference image Different, or

a POC relationship between the image of the first candidate image and the image of the current block, and a POC relationship between the image of the reference image and the image of the current block, or The associated layer of the first candidate image is different from the associated layer of the reference image, or

The determining unit is specifically configured to determine, according to the image information of the reference image, an image with the smallest index number in the image set from the at least two first candidate images, as the current image block Corresponding image.

17. The apparatus according to claim 15, wherein the image set includes at least one second candidate image and at least one third candidate image, wherein the second candidate image and the third The image type of the alternate image is different, or

a POC relationship between the second candidate image and the belonging image of the current block is different from a POC relationship between the third candidate image and an image of the current block, or

The belonging layer of the second candidate image is different from the belonging layer of the third candidate image, or

The belonging view of the second candidate image is different from the belonging view of the third candidate image, and the determining unit is further configured to determine, from the image set, a predicted image, where the predicted image includes a first a second candidate image and a third candidate image, the predicted image being used to determine a corresponding image of each image block in the strip in which the current image block is located;

18. The apparatus of claim 17, wherein the set of images comprises at least two second candidate images, and/or

The set of images includes at least two third candidate images, and

The determining unit is specifically configured to determine, from the image set, a predicted image, where the predicted image includes an image with the smallest index number in the image set in the at least two second candidate images; and/or

And for determining, from the set of images, a predicted image, the predicted image including an image of the at least two third candidate images having the smallest index number in the set of images.

The device according to claim 15, wherein the determining unit is specifically configured to determine, from the image set, a target image as each image block in a strip in which the current image block is located Corresponding image

Determining, from the image set, a reference image of the current image block according to an image type of a corresponding image of a current image block, such that an image type of the reference image is different from an image type of the corresponding image; Or

Determining, from the image set, a reference image of the current image block according to a POC relationship between a corresponding image of the current image block and an image of the current block, to make the reference image The POC relationship between the images belonging to the current block is different from the POC relationship between the image of the corresponding image and the image of the current block; or

Determining, from the image set, a reference image of the current image block according to an belonging layer of a corresponding image of the current image block, such that an belonging layer of the reference image is different from an associated layer of the corresponding image; Or

And determining, from the image set, a reference image of the current image block according to an belonging view of the corresponding image of the current image block, such that the belonging view of the reference image is different from the belonging view of the corresponding image.

The device according to claim 19, wherein the image set includes at least two fourth candidate images, wherein a type of the fourth candidate image is different from an image type of the reference image Different, or

a POC relationship between the fourth candidate image and the belonging image of the current block is different from a POC relationship between the reference image and the image of the current block, or

The determining unit is configured to determine, according to the image information of the corresponding image, an image with the smallest index number in the image set from the at least two fourth candidate images, as the current image block. Reference image.

The device according to any one of claims 13 to 20, wherein the belonging image of the current image block is a bidirectional predicted image, and the corresponding image is a bidirectional predicted image, and The processing unit is specifically configured to determine a motion vector of the corresponding image block according to image information of the corresponding image;

The device according to claim 21, wherein the processing unit is specifically configured to: when an image type of the corresponding image is a long-term type, if a reference image of the current image block is from the current image Determining, by the first reference image list of the belonging image of the block, a motion vector of the corresponding image block, such that the image pointed by the motion vector of the corresponding image block belongs to the first reference image list of the corresponding image, if the current image And the reference image of the block is from the second reference image list of the image of the current image block, and then determining a motion vector of the corresponding image block, so that the image pointed by the motion vector of the corresponding image block belongs to the corresponding image. Second reference image list; or

For when the POC of the corresponding image is the same as the POC of the belonging image of the current image block, if the reference image of the current image block is from the first reference image list of the belonging image of the current image block, Determining a motion vector of the corresponding image block such that an image pointed by the motion vector of the corresponding image block belongs to the first reference image list of the corresponding image, if the reference image of the current image block is from the current image block Determining, by the second reference image list of the image, a motion vector of the corresponding image block, such that the image pointed by the motion vector of the corresponding image block belongs to the second reference image list of the corresponding image; or

And determining, when the contiguous layer of the corresponding image is the base layer, the motion vector of the corresponding image block, if the reference image of the current image block is from the first reference image list of the belonging image of the current image block, An image in which the image pointed to by the motion vector of the corresponding image block belongs to the corresponding image belongs to the first reference image list, if the reference image of the current image block is from the second reference of the associated image of the current image block And determining, by the image list, a motion vector of the corresponding image block, such that the image pointed by the motion vector of the corresponding image block belongs to the second reference image list of the corresponding image or

For when the belonging of the corresponding image is regarded as a base view, if the reference picture of the current image block Determining, according to a first reference image list of the belonging image of the current image block, a motion vector of the corresponding image block, so that an image of the corresponding image pointed by the motion vector of the corresponding image block belongs to the first reference image a list, if a reference image of the current image block is from a second reference image list of an image of the current image block, determining a motion vector of the corresponding image block to cause an image of the motion vector of the corresponding image block to point to A second reference image list belonging to the corresponding image.

An apparatus for determining a time domain motion vector predictor, wherein the apparatus includes: a determining unit, configured to determine a reference image and a corresponding image of a current image block, where the image of the current image block belongs to Bidirectionally predicting an image, the corresponding image being a bidirectional predicted image;

And determining a corresponding image block of the current image block in the corresponding image;

a processing unit, configured to determine, according to the image information of the corresponding image, a motion vector of the corresponding image block, where the image information includes any of the following information: an image type, an image sequence with an image of the current block The numbered POC relationship, the belonging layer in hierarchical coding, or the dependent view in multi-view coding, the image type is divided into a long-term type and a short-term type, and the POC relationship is divided into a POC and a POC, and the belonging The layer is divided into a base layer and an enhancement layer, and the belonging view is a base view and a dependent view; and is configured to determine a time domain motion vector prediction of the current image block according to the reference image and a motion vector of the corresponding image block. value.

The device according to claim 23, wherein the processing unit is specifically configured to: when an image type of the corresponding image is a long-term type, if a reference image of the current image block is from the current image Determining, by the first reference image list of the belonging image of the block, a motion vector of the corresponding image block, such that the image pointed by the motion vector of the corresponding image block belongs to the first reference image list of the corresponding image, if the current image And the reference image of the block is from the second reference image list of the image of the current image block, and then determining a motion vector of the corresponding image block, so that the image pointed by the motion vector of the corresponding image block belongs to the corresponding image. Second reference image list; or

For when the POC of the corresponding image is the same as the POC of the belonging image of the current image block, if the reference image of the current image block is from the first reference image list of the belonging image of the current image block, Determining a motion vector of the corresponding image block such that the motion vector of the corresponding image block The image of the image belongs to the first reference image list of the corresponding image, and if the reference image of the current image block is from the second reference image list of the image of the current image block, the motion vector of the corresponding image block is determined, The image that points the motion vector of the corresponding image block belongs to the second reference image list of the corresponding image; or

And determining, when the reference image of the current image block is from the first reference image list of the belonging image of the current image block, determining a motion vector of the corresponding image block, The image of the corresponding image pointed to by the motion vector of the corresponding image block belongs to the first reference image list, if the reference image of the current image block is from the second reference image list of the belonging image of the current image block And determining a motion vector of the corresponding image block such that the image pointed by the motion vector of the corresponding image block belongs to the second reference image list of the corresponding image.