CN103024397B

CN103024397B - Method and device for determining time domain motion vector predictor

Info

Publication number: CN103024397B
Application number: CN201310005057.6A
Authority: CN
Inventors: 林永兵
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2013-01-07
Filing date: 2013-01-07
Publication date: 2015-07-08
Anticipated expiration: 2033-01-07
Also published as: WO2014106388A1; CN103024397A

Abstract

The invention provides a method for determining time domain motion vector predictor and can improve effect of acquiring time domain motion vector predictor of a currently processed picture block. The method includes determining a picture corresponding to the current picture block from a picture set according to picture information of a reference picture of the current picture block, or determining a reference picture of the current picture block from the picture set according to the picture information of the picture corresponding to the current picture block; determining a corresponding picture block of the corresponding picture according to the current picture block; determining the time domain motion vector predictor of the current picture block according to the reference picture and the corresponding picture block, wherein the picture information comprises any one kind of picture types, picture order count POC relation between the current block and the belonging picture, belonging layers in multiple layers of codes or belonging looks in multi-look codes, the picture types include long-term types and short-term types, the POC relation includes identical POC and different POC, the belonging layers include basic layer and reinforcing layers, and the belonging looks include basic looks and dependency looks.

Description

Determine the method and apparatus of time domain motion vector predictor

Technical field

The present invention relates to video field, and more specifically, relate to the method and apparatus determining time domain motion vector predictor.

Background technology

At present, the method of known a kind of image procossing, (following according to the image block when pre-treatment, be called for short current block) motion vector (MV, Motion Vector :) find the corresponding blocks corresponding with current block in a reference image, according to this corresponding blocks, determine the motion vector predictor (MVP, Motionvector predictor) of current block.At coding side, deduct this MVP with the MV of current block and obtain difference, this difference is encoded.In decoding end, decoding is carried out to code stream and obtains this difference, according to this difference and this MVP, determine the MV of current block.

MVP comprises time domain motion vector predictor (TMVP, Temporal MV Predictor), namely, according to the time domain reference image block (also referred to as corresponding blocks or corresponding picture block) of current block, the MVP obtained, so-called time domain, refers to that the image at current block place and the image at corresponding blocks place are in different time position on the time shaft of video sequence, this position adopts image sequence numbering (POC, Picture Order Count) to represent.The time domain distance of MV refers to the distance between the image at reference picture and current block place, i.e. the difference of image POC.

In the process obtaining TMVP, if the time domain distance of the MV of the correspondence image block of the time domain Distance geometry current block of the MV of current block may be different, relate to the convergent-divergent of MV.This convergent-divergent process is as shown in following formula 1:

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 that needs obtain, and colMV represents the TMV of the time domain reference block of current block, and time domain reference block is also referred to as corresponding blocks (colBlock, co-located Block).D represents current block (currBlock, current Block) the time domain distance of MV, D equals the POC difference of the reference picture (currRefPic, current Reference Picture) of current block and the present image (currPic, current Picture) at current block place.D represents the time domain distance of the MV of corresponding blocks, and d equals MV(and colMV of corresponding blocks) the POC difference of the reference picture (colRefPic, co-locatedReference Picture) that points to and the image at corresponding blocks place.Here, the image at corresponding blocks place is called as correspondence image (colPic co-located picture).Fig. 1 shows the schematic diagram of the relation of present image, correspondence image, the reference picture of present image and the reference picture of correspondence image.

In the prior art, reference picture is divided into long-term long-term and short-term short-term two type.

If the reference picture type of colRefPic and currRefPic is all short-term, so carries out MV convergent-divergent and obtain TMVP, i.e. currMV=d/D*colMV.If the reference picture type of colRefPic and currRefPic is all long-term, so currMV=colMV, now zoom factor is 1.If the reference picture type of colRefPic with currRefPic is different, then currMV cannot be obtained.

Such as, if the reference picture type that the reference picture type of colRefPic is short-term, currRefPic is long-term, then d/D is a very little value (leveling off to zero), and therefore, the TMVP of the current block of acquisition does not have reference value.

Again such as, if the reference picture type that the reference picture type of colRefPic is long-term, currRefPic is short-term, then d/D is a very large value (levels off to infinity), and equally, the TMVP of the current block of acquisition does not have reference value.

Summary of the invention

The embodiment of the present invention provides a kind of method, device and the equipment of determining time domain motion vector predictor, can improve the effect of the time domain motion vector predictor of the image block obtained when pre-treatment.

First aspect, provide a kind of method determining time domain motion vector predictor, the method comprises: according to the image information of the reference picture of current image block, from image collection, determine the correspondence image of this current image block, wherein, this image information comprises following arbitrary information: image type, and the image sequence numbering POC relation belonging to this current block between image, layer belonging in hierarchical coding or look belonging to looking in coding more, this image type is divided into long-term type and short-term type, this POC relation is divided into POC identical different with POC, this affiliated layer is divided into Primary layer and enhancement layer, this affiliated depending on be divided into substantially depending on and dependence look, or the image information of correspondence image according to current image block, from this image collection, determine the reference picture of this current image block, wherein, this image information comprises following arbitrary information: the image sequence numbering POC relation between image type and the affiliated image of this current block, layer belonging to image or look belonging to looking in coding in hierarchical coding more, this image type is divided into long-term type and short-term type, this POC relation is divided into POC identical different with POC, this affiliated layer is divided into Primary layer and enhancement layer, this affiliated depending on be divided into substantially depending on and dependence look, determine the correspondence image block of this current image block in this correspondence image, according to this reference picture and this correspondence image block, determine the time domain motion vector predictor of this current image block.

In a kind of possible execution mode, this current image block relies on view picture, this image collection comprises with this dependence depending on the corresponding image substantially looked, or this current image block is the image block in enhancement layer image, this image collection comprises the image of the Primary layer corresponding with this enhancement layer image.

In conjunction with first aspect and the first possible execution mode, in the execution mode that the second is possible, according to the image information of the reference picture of current image block, from this image collection, determine the correspondence image of this current image block, comprising: according to the image type of the reference picture of current image block, from this image collection, determine the correspondence image of this current image block, different with the image type of the image type and this reference picture that make this correspondence image; Or according to the reference picture of current image block and POC relation between this image of this current block, from this image collection, determine the correspondence image of this current image block, with make this correspondence image and this current block belonging to POC relation between image and this reference picture and this current block belonging to POC relation between image different; Or belonging to the reference picture of current image block layer, from this image collection, determine the correspondence image of this current image block, to make layer belonging to layer belonging to this correspondence image and this reference picture different; Or look belonging to the reference picture of current image block, from this image collection, determine the correspondence image of this current image block, with make belonging to this correspondence image depending on look belonging to this reference picture different.

In conjunction with first aspect, the first possible execution mode and the possible execution mode of the second, in the execution mode that the third is possible, this image collection comprises at least two the first alternative images, wherein, the type of this first alternative image and the image type of this reference picture different, or this first alternative image and POC relation between the affiliated image of this current block, and this reference picture and this current block belonging to POC relation between image different, or the affiliated layer of this first alternative image and the affiliated layer of this reference picture different, or belonging to this first alternative image depending on look belonging to this reference picture different, and this is according to the image information of the reference picture of current image block, from this image collection, determine the correspondence image of this current image block, comprise: according to the image information of the reference picture of current image block, from these at least two the first alternative images, determine the image that call number in this image collection is minimum, as the correspondence image of this current image block.

In conjunction with first aspect, the first possible execution mode, the execution mode that the second is possible and the third possible execution mode, in the 4th kind of possible execution mode, this image collection comprises at least one second alternative image and at least one the 3rd alternative image, wherein, the image type of this second alternative image and the 3rd alternative image is different, or this second alternative image and POC relation between the affiliated image of this current block, and the 3rd alternative image and this current block belonging to POC relation between image different, or the affiliated layer of the affiliated layer of this second alternative image and the 3rd alternative image is different, or belonging to this second alternative image depending on look belonging to the 3rd alternative image different, and the method also comprises: from this image collection, determine predicted picture, this predicted picture comprises a second alternative image and a 3rd alternative image, this predicted picture is for determining the correspondence image of each image block in band residing for this current image block, and this is according to the type of this reference picture, from this image collection, determines the correspondence image of this current image block, comprising: from this predicted picture, determine the correspondence image of this current image block.

In conjunction with execution mode, the third possible execution mode and the 4th kind of possible execution mode that first aspect, the first possible execution mode, the second are possible, in the 5th kind of possible execution mode, this image collection comprises at least two the second alternative images, and/or this image collection comprises at least two the 3rd alternative images, and should from this image collection, determine predicted picture, comprise: from this image collection, determine predicted picture, this predicted picture comprises the minimum image of call number in these at least two the second alternative images in this image collection; And/or from this image collection, determine predicted picture, this predicted picture comprises the minimum image of call number in these at least two the 3rd alternative images in this image collection.

In conjunction with execution mode, the third possible execution mode, the 4th kind of possible execution mode and the 5th kind of possible execution mode that first aspect, the first possible execution mode, the second are possible, in the 6th kind of possible execution mode, the method comprises: from this image collection, determine target image, as the correspondence image of each image block in band residing for this current image block; And this is according to the image information of the correspondence image of current image block, from this image collection, determine the reference picture of this current image block, comprise: according to the image type of the correspondence image of current image block, from this image collection, determine the reference picture of this current image block, different with the image type of the image type and this correspondence image that make this reference picture; Or according to the correspondence image of current image block and POC relation between this image of this current block, from this image collection, determine the reference picture of this current image block, with make this reference picture and this current block belonging to POC relation between image and this correspondence image and this current block belonging to POC relation between image different; Or belonging to the correspondence image of current image block layer, from this image collection, determine the reference picture of this current image block, to make layer belonging to layer belonging to this reference picture and this correspondence image different; Or look belonging to the correspondence image of current image block, from this image collection, determine the reference picture of this current image block, with make belonging to this reference picture depending on look belonging to this correspondence image different.

In conjunction with first aspect, the first possible execution mode, the execution mode that the second is possible, the third possible execution mode, 4th kind of possible execution mode, 5th kind of possible execution mode and the 6th kind of possible execution mode, in the 7th kind of possible execution mode, this image collection comprises at least two the 4th alternative images, wherein, the type of the 4th alternative image and the image type of this reference picture different, or the 4th alternative image and POC relation between the affiliated image of this current block, and this reference picture and this current block belonging to POC relation between image different, or the 4th alternative image affiliated layer and the affiliated layer of this reference picture different, or the 4th belonging to alternative image depending on look belonging to this reference picture different, and this is according to the image information of this correspondence image, from this image collection, determine the reference picture of this current image block, comprise: according to the image information of this correspondence image, from these at least two the 4th alternative images, determine the image that call number in this image collection is minimum, as the reference picture of this current image block.

In conjunction with first aspect, the first possible execution mode, the execution mode that the second is possible, the third possible execution mode, 4th kind of possible execution mode, 5th kind of possible execution mode, 6th kind of possible execution mode and the 7th kind of possible execution mode, in the 8th kind of possible execution mode, the affiliated image of this current image block is bidirectional predictive picture, this correspondence image is bidirectional predictive picture, and this is according to this reference picture and this correspondence image block, determine the time domain motion vector predictor of this current image block, comprise: according to the image information of this correspondence image, determine the motion vector of this correspondence image block, according to the motion vector of this reference picture with this correspondence image block, determine the time domain motion vector predictor of this current image block.

In conjunction with first aspect, the first possible execution mode, the execution mode that the second is possible, the third possible execution mode, 4th kind of possible execution mode, 5th kind of possible execution mode, 6th kind of possible execution mode, 7th kind of possible execution mode and the 8th kind of possible execution mode, in the 9th kind of possible execution mode, this determines the motion vector of this correspondence image block, comprise further: when the image type of this correspondence image is long-term type, if the reference picture of this current image block comes from the first reference picture list of the affiliated image of this current image block, then determine the motion vector of correspondence image block, the first reference picture list of this correspondence image is belonged to the image of the motion vector points making this correspondence image block, if the reference picture of this current image block comes from the second reference picture list of the affiliated image of this current image block, then determine the motion vector of correspondence image block, the second reference picture list of this correspondence image is belonged to the image of the motion vector points making this correspondence image block, maybe when the POC of this correspondence image is with when belonging to this current image block, the POC of image is identical, if the reference picture of this current image block comes from the first reference picture list of the affiliated image of this current image block, then determine the motion vector of correspondence image block, the first reference picture list of this correspondence image is belonged to the image of the motion vector points making this correspondence image block, if the reference picture of this current image block comes from the second reference picture list of the affiliated image of this current image block, then determine the motion vector of correspondence image block, the second reference picture list of this correspondence image is belonged to the image of the motion vector points making this correspondence image block, maybe when belonging to this correspondence image, layer is Primary layer, if the reference picture of this current image block comes from the first reference picture list of the affiliated image of this current image block, then determine the motion vector of correspondence image block, the image belonging to this correspondence image with the image of the motion vector points making this correspondence image block belongs to the first reference picture list, if the reference picture of this current image block comes from the second reference picture list of the affiliated image of this current image block, then determine the motion vector of correspondence image block, the second reference picture list of this correspondence image is belonged to the image of the motion vector points making this correspondence image block, maybe belonging to this correspondence image, be considered as basic apparent time, if the reference picture of this current image block comes from the first reference picture list of the affiliated image of this current image block, then determine the motion vector of correspondence image block, the first reference picture list is belonged to the image of this correspondence image making the motion vector points of this correspondence image block, if the reference picture of this current image block comes from the second reference picture list of the affiliated image of this current image block, then determine the motion vector of correspondence image block, the second reference picture list of this correspondence image is belonged to the image of the motion vector points making this correspondence image block.

Second aspect, provide a kind of method determining time domain motion vector predictor, the method comprises: reference picture and the correspondence image of determining current image block, wherein, the affiliated image of this current image block is bidirectional predictive picture, and this correspondence image is bidirectional predictive picture; Determine the correspondence image block of this current image block in this correspondence image; According to the image information of this correspondence image, determine the motion vector of this correspondence image block, this image information comprises following arbitrary information: the image sequence numbering POC relation between image type and the affiliated image of this current block, layer belonging in hierarchical coding or look belonging to looking in coding more, this image type is divided into long-term type and short-term type, this POC relation is divided into POC identical different with POC, this affiliated layer is divided into Primary layer and enhancement layer, this affiliated depending on be divided into substantially depending on and dependence look; According to the motion vector of this reference picture with this correspondence image block, determine the time domain motion vector predictor of this current image block.

In a kind of possible execution mode, this determines the motion vector of this correspondence image block, comprises further:

When the image type of this correspondence image is long-term type, if the reference picture of this current image block comes from the first reference picture list of the affiliated image of this current image block, then determine the motion vector of correspondence image block, the first reference picture list is belonged to the image of this correspondence image making the motion vector points of this correspondence image block, if the reference picture of this current image block comes from the second reference picture list of the affiliated image of this current image block, then determine the motion vector of correspondence image block, the second reference picture list of this correspondence image is belonged to the image of the motion vector points making this correspondence image block, maybe when the POC of this correspondence image is with when belonging to this current image block, the POC of image is identical, if the reference picture of this current image block comes from the first reference picture list of the affiliated image of this current image block, then determine the motion vector of correspondence image block, the first reference picture list of this correspondence image is belonged to the image of the motion vector points making this correspondence image block, if the reference picture of this current image block comes from the second reference picture list of the affiliated image of this current image block, then determine the motion vector of correspondence image block, the second reference picture list of this correspondence image is belonged to the image of the motion vector points making this correspondence image block, maybe when belonging to this correspondence image, layer is Primary layer, if the reference picture of this current image block comes from the first reference picture list of the affiliated image of this current image block, then determine the motion vector of correspondence image block, the first reference picture list of this correspondence image is belonged to the image of the motion vector points making this correspondence image block, if the reference picture of this current image block comes from the second reference picture list of the affiliated image of this current image block, then determine the motion vector of correspondence image block, the second reference picture list of this correspondence image is belonged to the image of the motion vector points making this correspondence image block, maybe belonging to this correspondence image, be considered as basic apparent time, if the reference picture of this current image block comes from the first reference picture list of the affiliated image of this current image block, then determine the motion vector of correspondence image block, the first reference picture list of this correspondence image is belonged to the image of the motion vector points making this correspondence image block, if the reference picture of this current image block comes from the second reference picture list of the affiliated image of this current image block, then determine the motion vector of correspondence image block, the second reference picture list of this correspondence image is belonged to the image of the motion vector points making this correspondence image block.

The third aspect, provide a kind of device determining time domain motion vector predictor, this device comprises:

Determining unit, for the image information of the reference picture according to current image block, from image collection, determine the correspondence image of this current image block, wherein, this image information comprises following arbitrary information: the image sequence numbering POC relation between image type and the affiliated image of this current block, layer belonging in hierarchical coding or look belonging to looking in coding more, and this image type is divided into long-term type and short-term type, and this POC relation is divided into that POC is identical and POC is different; Or for the image information of the correspondence image according to current image block, from this image collection, determine the reference picture of this current image block, wherein, this image information comprises following arbitrary information: the image sequence numbering POC relation between image type and the affiliated image of this current block, layer belonging to image or the arbitrary information in looking belonging to looking in coding in hierarchical coding more, this image type is divided into long-term type and short-term type, and this POC relation is divided into POC identical different with POC; Processing unit, for determining the correspondence image block of this current image block in this correspondence image; For according to this reference picture and this correspondence image block, determine the time domain motion vector predictor of this current image block.

In conjunction with the third aspect and the first possible execution mode, in the execution mode that the second is possible, this determining unit is specifically for the image type of the reference picture according to current image block, from this image collection, determine the correspondence image of this current image block, different with the image type of the image type and this reference picture that make this correspondence image; Or for the reference picture according to current image block and POC relation between this image of this current block, from this image collection, determine the correspondence image of this current image block, with make this correspondence image and this current block belonging to POC relation between image and this reference picture and this current block belonging to POC relation between image different; Or for layer belonging to the reference picture of current image block, from this image collection, determine the correspondence image of this current image block, to make layer belonging to layer belonging to this correspondence image and this reference picture different; Or for looking belonging to the reference picture of current image block, from this image collection, determine the correspondence image of this current image block, with make belonging to this correspondence image depending on look belonging to this reference picture different.

In conjunction with the third aspect, the first possible execution mode and the possible execution mode of the second, in the execution mode that the third is possible, this image collection comprises at least two the first alternative images, wherein, the type of this first alternative image and the image type of this reference picture different, or this first alternative image and POC relation between the affiliated image of this current block, and this reference picture and this current block belonging to POC relation between image different, or the affiliated layer of this first alternative image and the affiliated layer of this reference picture different, or belonging to this first alternative image depending on look belonging to this reference picture different, and this determining unit is specifically for the image information according to this reference picture, from these at least two the first alternative images, determine the image that call number in this image collection is minimum, as the correspondence image of this current image block.

In conjunction with the third aspect, the first possible execution mode, the execution mode that the second is possible and the third possible execution mode, in the 4th kind of possible execution mode, this image collection comprises at least one second alternative image and at least one the 3rd alternative image, wherein, the image type of this second alternative image and the 3rd alternative image is different, or this second alternative image and POC relation between the affiliated image of this current block, and the 3rd alternative image and this current block belonging to POC relation between image different, or the affiliated layer of the affiliated layer of this second alternative image and the 3rd alternative image is different, or belonging to this second alternative image depending on look belonging to the 3rd alternative image different, and this determining unit is also for from this image collection, determine predicted picture, this predicted picture comprises a second alternative image and a 3rd alternative image, this predicted picture is for determining the correspondence image of each image block in band residing for this current image block, for from this predicted picture, determine the correspondence image of this current image block.

In conjunction with execution mode, the third possible execution mode and the 4th kind of possible execution mode that the third aspect, the first possible execution mode, the second are possible, in the 5th kind of possible execution mode, this image collection comprises at least two the second alternative images, and/or this image collection comprises at least two the 3rd alternative images, and this determining unit is specifically for from this image collection, determine predicted picture, this predicted picture comprises the minimum image of call number in these at least two the second alternative images in this image collection; And/or for from this image collection, determine predicted picture, this predicted picture comprises the minimum image of call number in these at least two the 3rd alternative images in this image collection.

In conjunction with execution mode, the third possible execution mode, the 4th kind of possible execution mode and the 5th kind of possible execution mode that the third aspect, the first possible execution mode, the second are possible, in the 6th kind of possible execution mode, this determining unit is specifically for from this image collection, determine target image, as the correspondence image of each image block in band residing for this current image block; For the image type of the correspondence image according to current image block, from this image collection, determine the reference picture of this current image block, different with the image type of the image type and this correspondence image that make this reference picture; Or for the correspondence image according to current image block and POC relation between this image of this current block, from this image collection, determine the reference picture of this current image block, with make this reference picture and this current block belonging to POC relation between image and this correspondence image and this current block belonging to POC relation between image different; Or for layer belonging to the correspondence image of current image block, from this image collection, determine the reference picture of this current image block, to make layer belonging to layer belonging to this reference picture and this correspondence image different; Or for looking belonging to the correspondence image of current image block, from this image collection, determine the reference picture of this current image block, with make belonging to this reference picture depending on look belonging to this correspondence image different.

In conjunction with the third aspect, the first possible execution mode, the execution mode that the second is possible, the third possible execution mode, 4th kind of possible execution mode, 5th kind of possible execution mode and the 6th kind of possible execution mode, in the 7th kind of possible execution mode, this image collection comprises at least two the 4th alternative images, wherein, the type of the 4th alternative image and the image type of this reference picture different, or the 4th alternative image and POC relation between the affiliated image of this current block, and this reference picture and this current block belonging to POC relation between image different, or the 4th alternative image affiliated layer and the affiliated layer of this reference picture different, or the 4th belonging to alternative image depending on look belonging to this reference picture different, and this determining unit is specifically for the image information according to this correspondence image, from these at least two the 4th alternative images, determine the image that call number in this image collection is minimum, as the reference picture of this current image block.

In conjunction with the possible execution mode of the third aspect, the first possible execution mode, the second, the third possible execution mode, the 4th kind of possible execution mode, the 5th kind of possible execution mode, the 6th kind of possible execution mode and the 7th kind of possible execution mode, in the 8th kind of possible execution mode, the affiliated image of this current image block is bidirectional predictive picture, this correspondence image is bidirectional predictive picture, and this processing unit is specifically for the image information according to this correspondence image, determine the motion vector of this correspondence image block; For the motion vector according to this reference picture and this correspondence image block, determine the time domain motion vector predictor of this current image block.

In conjunction with the third aspect, the first possible execution mode, the execution mode that the second is possible, the third possible execution mode, 4th kind of possible execution mode, 5th kind of possible execution mode, 6th kind of possible execution mode, 7th kind of possible execution mode and the 8th kind of possible execution mode, in the 9th kind of possible execution mode, this processing unit is specifically for when the image type of this correspondence image is long-term type, if the reference picture of this current image block comes from the first reference picture list of the affiliated image of this current image block, then determine the motion vector of correspondence image block, the first reference picture list of this correspondence image is belonged to the image of the motion vector points making this correspondence image block, if the reference picture of this current image block comes from the second reference picture list of the affiliated image of this current image block, then determine the motion vector of correspondence image block, the second reference picture list of this correspondence image is belonged to the image of the motion vector points making this correspondence image block, or for when the POC of this correspondence image is with when belonging to this current image block, the POC of image is identical, if the reference picture of this current image block comes from the first reference picture list of the affiliated image of this current image block, then determine the motion vector of correspondence image block, the first reference picture list of this correspondence image is belonged to the image of the motion vector points making this correspondence image block, if the reference picture of this current image block comes from the second reference picture list of the affiliated image of this current image block, then determine the motion vector of correspondence image block, the second reference picture list of this correspondence image is belonged to the image of the motion vector points making this correspondence image block, or for when belonging to this correspondence image, layer is Primary layer, if the reference picture of this current image block comes from the first reference picture list of the affiliated image of this current image block, then determine the motion vector of correspondence image block, the image belonging to this correspondence image with the image of the motion vector points making this correspondence image block belongs to the first reference picture list, if the reference picture of this current image block comes from the second reference picture list of the affiliated image of this current image block, then determine the motion vector of correspondence image block, the second reference picture list of this correspondence image is belonged to the image of the motion vector points making this correspondence image block, or for being considered as basic apparent time belonging to this correspondence image, if the reference picture of this current image block comes from the first reference picture list of the affiliated image of this current image block, then determine the motion vector of correspondence image block, the first reference picture list is belonged to the image of this correspondence image making the motion vector points of this correspondence image block, if the reference picture of this current image block comes from the second reference picture list of the affiliated image of this current image block, then determine the motion vector of correspondence image block, the second reference picture list of this correspondence image is belonged to the image of the motion vector points making this correspondence image block.

Fourth aspect, provide a kind of device determining time domain motion vector predictor, this device comprises: determining unit, for determining reference picture and the correspondence image of current image block, wherein, the affiliated image of this current image block is bidirectional predictive picture, and this correspondence image is bidirectional predictive picture; For determining the correspondence image block of this current image block in this correspondence image; Processing unit, for the image information according to this correspondence image, determine the motion vector of this correspondence image block, this image information comprises following arbitrary information: the image sequence numbering POC relation between image type and the affiliated image of this current block, layer belonging in hierarchical coding or look belonging to looking in coding more, this image type is divided into long-term type and short-term type, this POC relation is divided into POC identical different with POC, this affiliated layer is divided into Primary layer and enhancement layer, this affiliated depending on be divided into substantially depending on and dependence look; For the motion vector according to this reference picture and this correspondence image block, determine the time domain motion vector predictor of this current image block.

In a kind of possible execution mode, this processing unit is specifically for when the image type of this correspondence image is long-term type, if the reference picture of this current image block comes from the first reference picture list of the affiliated image of this current image block, then determine the motion vector of correspondence image block, the first reference picture list of this correspondence image is belonged to the image of the motion vector points making this correspondence image block, if the reference picture of this current image block comes from the second reference picture list of the affiliated image of this current image block, then determine the motion vector of correspondence image block, the second reference picture list of this correspondence image is belonged to the image of the motion vector points making this correspondence image block, or for when the POC of this correspondence image is with when belonging to this current image block, the POC of image is identical, if the reference picture of this current image block comes from the first reference picture list of the affiliated image of this current image block, then determine the motion vector of correspondence image block, the first reference picture list of this correspondence image is belonged to the image of the motion vector points making this correspondence image block, if the reference picture of this current image block comes from the second reference picture list of the affiliated image of this current image block, then determine the motion vector of correspondence image block, the second reference picture list of this correspondence image is belonged to the image of the motion vector points making this correspondence image block, or for when belonging to this correspondence image, layer is Primary layer, if the reference picture of this current image block comes from the first reference picture list of the affiliated image of this current image block, then determine the motion vector of correspondence image block, the image belonging to this correspondence image with the image of the motion vector points making this correspondence image block belongs to the first reference picture list, if the reference picture of this current image block comes from the second reference picture list of the affiliated image of this current image block, then determine the motion vector of correspondence image block, the second reference picture list of this correspondence image is belonged to the image of the motion vector points making this correspondence image block, or for being considered as basic apparent time belonging to this correspondence image, if the reference picture of this current image block comes from the first reference picture list of the affiliated image of this current image block, then determine the motion vector of correspondence image block, the first reference picture list is belonged to the image of this correspondence image making the motion vector points of this correspondence image block, if the reference picture of this current image block comes from the second reference picture list of the affiliated image of this current image block, then determine the motion vector of correspondence image block, the second reference picture list of this correspondence image is belonged to the image of the motion vector points making this correspondence image block.

According to the method and apparatus of embodiment of the present invention domain motion vector predictor really, by selecting reference picture and the correspondence image of current block, make the reference picture of current block and the image type of correspondence image, and the POC relation belonging to current block between image block, belonging to layer or described in look different, the effect making the reference picture of this current block and the reference picture of this correspondence image block belong to identical reference picture type can be improved, thus, in the time domain of the motion vector of this corresponding blocks of time domain Distance geometry of the motion vector of current block apart from different, the effect of the time domain motion vector predictor obtaining current block can be improved.

Accompanying drawing explanation

In order to be illustrated more clearly in the technical scheme of the embodiment of the present invention, be briefly described to the accompanying drawing used required in the embodiment of the present invention below, apparently, accompanying drawing described is below only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.

Fig. 1 is the schematic diagram of an example of the relation representing the reference picture of present image, correspondence image, present image and the reference picture of correspondence image.

Fig. 2 is the indicative flowchart of the method determining time domain motion vector predictor according to an embodiment of the invention.

Fig. 3 is the indicative flowchart of the method determining time domain motion vector predictor according to another embodiment of the present invention.

Fig. 4 is the schematic diagram of another example of the relation representing the reference picture of present image, correspondence image, present image and the reference picture of correspondence image.

Fig. 5 is the schematic diagram of an example again of the relation representing the reference picture of present image, correspondence image, present image and the reference picture of correspondence image.

Fig. 6 is the schematic block diagram of the device determining time domain motion vector predictor according to an embodiment of the invention.

Fig. 7 is the schematic block diagram of the device determining time domain motion vector predictor according to another embodiment of the present invention.

Embodiment

Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.

The general principle of Video coding compression utilizes spatial domain, correlation between time domain and code word, removes redundancy as far as possible.In the block-based mixed video coding framework of employing, realize Video coding compression by the step such as prediction (comprising infra-frame prediction and inter prediction), conversion, quantification, entropy code.In this coding framework, video sequence sequence comprises a series of images picture, and image is further divided into band (also referred to as, section), and slice, slice be divided into block block again.Video coding in units of block from the upper left position of picture from left to right from top to bottom a line a line carry out coded treatment.For the ease of understanding, in the following description, taking image block as object, the process of Video coding or decoding is described.

Fig. 2 shows the indicative flowchart according to the embodiment of the present invention method 100 of domain motion vector predictor really.Further, the subject of implementation of the method 100 can be coding side, also can be decoding end, and the present invention is also not particularly limited.As shown in Figure 2, the method 100 comprises:

S110, according to the image information of the reference picture of current image block, from image collection, determine the correspondence image of this current image block, wherein, this image information comprises following arbitrary information: the image sequence numbering POC relation between image type and the affiliated image of this current block, layer belonging in hierarchical coding or look belonging to looking in coding more, this image type is divided into long-term type and short-term type, this POC relation is divided into POC identical different with POC, this affiliated layer is divided into Primary layer and enhancement layer, this affiliated depending on be divided into substantially depending on and dependence look; Or

According to the image information of the correspondence image of current image block, from this image collection, determine the reference picture of this current image block, wherein, this image information comprises following arbitrary information: the image sequence numbering POC relation between image type and the affiliated image of this current block, layer belonging to image or look belonging to looking in coding in hierarchical coding more, this image type is divided into long-term type and short-term type, this POC relation is divided into POC identical different with POC, this affiliated layer is divided into Primary layer and enhancement layer, this affiliated depending on be divided into substantially depending on and dependence look;

S120, determines the correspondence image block of this current image block in this correspondence image;

S130, according to this reference picture and this correspondence image block, determines the time domain motion vector predictor of this current image block.

Further, this current image block relies on view picture, and this image collection comprises with this dependence depending on the corresponding image substantially looked, or

This current image block is the image block in enhancement layer image, and this image collection comprises the image of the Primary layer corresponding with this enhancement layer image.

Specifically, according to the method for embodiment of the present invention domain motion vector predictor really, can be applicable to comprise look coding techniques and layered coding technique etc. more can from comprising the image collection of multiple reference picture (or movable information of this reference picture) (in other words, image list) a middle selection reference picture, and utilize this reference picture to determine the technology of the movable information of the image block when pre-treatment.

Such as, looking in coding more, comprising and substantially look (dependent view) depending on (base view) and dependence.Substantially absolute coding is looked, compatible existing video encoding standard, dependence depending on utilization depending on Predicting Technique with reference to substantially depending on encoding, namely, substantially depending on be taken as rely on depending on a reference look (in other words, rely on depending on image can using the image substantially looked as with reference to image), with to dependence depending on carrying out predictive coding.Due to rely on depending on and substantially depending between there is very strong correlation, rely on depending on choosing the probability substantially regarding as reference very large, this with regard to mean rely on depending in have a large amount of image blocks to choose the image coming from and substantially look as reference picture.

Similarly, in hierarchical coding or scalable coding, comprise Primary layer and enhancement layer.Primary layer absolute coding, compatible existing video encoding standard, enhancement layer utilizes inter-layer predication techniques to encode with reference to Primary layer, namely, Primary layer is taken as a reference layer of enhancement layer (in other words, the image of enhancement layer can using the image of Primary layer as with reference to image), to carry out predictive coding to enhancement layer.Owing to there is very strong correlation between enhancement layer and Primary layer, enhancement layer chooses Primary layer probability as a reference very large, and this has a large amount of image blocks to choose the image coming from Primary layer as reference picture with regard to meaning in enhancement layer.

For the ease of understanding, in the following description, for looking in coding the method used according to embodiment of the present invention domain motion vector predictor really, be described more.

Further, in embodiments of the present invention, this basic views picture uses the reference picture of short-term type to encode, and this Primary layer image uses the reference picture of short-term type to encode.

Specifically, reference picture (in other words, the occupation mode of reference picture) can be divided into long-term long-term and short-term short-term two kinds.Long-term refers to, such as, because static background all can not change for a long time, and make on a timeline, the image larger with the distance of present image also can as the reference of present image.And long-term, short-term refer to relatively, front and back two width image distance is on a timeline nearer, and correlation is higher, better as the effect with reference to image, therefore, usually uses the reference picture of short-term to encode.

Below, for convenience of explanation, in embodiments of the present invention, for substantially depending on and rely on the coding of the image in looking, such as, inter prediction encoding process (comprising MCP and MV prediction), uses the reference picture of short-term type to encode, equally, for the coding of the image in Primary layer and enhancement layer, such as, inter prediction encoding process, comprise MCP and MV prediction, use the reference picture of short-term type to encode.

To when the image block (current image block of pre-treatment, below for convenience of explanation, be called for short current block) when carrying out coding-decoding operation, current block comprises two or more motion vector, can utilize these motion vectors, multiple reference block is obtained from comprising two or more reference picture, thus, such as, can according to this reference block, determine the predicted value (MVP, MV predictor) of the motion vector of current block.

For saving the encoding bit overhead to the motion vector of current block, the method for MV prediction+coded prediction difference is adopted to carry out.First obtained the predicted value of the motion vector of current block by MV Predicting Technique, then, determine the MV of current block and the difference of this MV predicted value, finally this difference is encoded.Obtained the process of the predicted value of the motion vector of current block by MV Predicting Technique, carry out in an identical manner in Code And Decode, to obtain identical MV predicted value, realize the coupling of Code And Decode.

The predicted value of motion vector comprises the predicted value (TMVP, Temporal MVpredictor) of time-domain motion vector.The predicted value of time-domain motion vector be time domain reference image according to current block (also referred to as, correspondence image) the MV value that obtains, so-called time domain refers to that the image at current block place and the reference picture of current block are in different time position on the time shaft of video sequence, and this position adopts the POC(Picture Order Count of image) represent.Distance on a timeline between the image that the time domain distance of MV refers to the reference picture that MV points to and current block place, i.e. the difference of image POC.

Obtain TMVP process and relate to the reference picture of current block and the selection of correspondence image, and the convergent-divergent of MV, in acquisition TMVP process, if the time domain distance of the MV of the correspondence image block of the time domain Distance geometry current block of the MV of current block may be different, relate to the convergent-divergent of MV, this convergent-divergent process as shown in Equation 1.

It should be noted that, look in coding such as more, reference picture due to current block may come from other to be looked, reference picture may have identical POC with the image at current block place, such as, the dependence in a certain moment depending on and substantially depending on image there is identical POC(namely, it is that POC is identical that POC closes), therefore may cause occurring that divisor is the situation of zero in the MV convergent-divergent process related in TMVP acquisition process, namely, POC (currRefPic)-POC (currPic)=0, for avoiding this situation, by come from difference depending on reference picture be used as long-term to process, such as, rely on depending on will the reference picture substantially looked be come from as long-term.

In embodiments of the present invention, at S 110, coding side or decoding end are (below, for convenience of explanation, encoded end is example as subject of implementation, is described) from the image list (image collection) comprising at least two reference pictures, currRefPic and colPic can be determined.

It should be noted that, above-mentioned image collection can be made up of multiple image list, and may also be only an image list (in other words image collection), the present invention is also not particularly limited.Such as, for forward-predicted picture (P-slice, Prediction slice), this reference set is an image list, and comprises two image list for bidirectional predictive picture (B-slice, Bi-prediction slice) this image collection.

In embodiments of the present invention, first can determine currRefPic, then according to the type of currRefPic, determine that colPic(is namely, situation 1), also first can determine colPic, then according to the type of colPic, determine that currRefPic(namely, situation 2).Below, respectively above two kinds of situations are described.

Situation 1

Specifically, such as, coding side (or decoding end) from reference picture list (image collection), can determine the reference picture currRefPic of an image as current block.

Alternatively, coding side can from reference picture list, determines that the minimum image of call number is as currRefPic.

Should be understood that the method for the above determination currRefPic enumerated is only exemplary and illustrates, the present invention is not limited thereto, and can determine that arbitrary image in reference picture list is as currRefPic.

Further, coding side (or decoding end) can use method same as the prior art to obtain this reference picture list.

It should be noted that, in order to enable coding side and decoding end obtain identical TMVP, to realize the coupling of Code And Decode, needing to guarantee that coding side and decoding end select identical currRefPic.Therefore, can specify that coding side and decoding end are according to identical rules selection currRefPic, also can after coding side determines currRefPic, its currRefPic(selected of notice decoding end such as, notice decoding end is as the call number of image in reference picture list of this currRefPic), thus make decoding end select identical currRefPic.

Thereafter, coding side from reference picture list, can determine colPic according to the image information of reference picture (the image sequence numbering POC relation between this image of image type and this current block, in hierarchical coding belonging to layer or the arbitrary information in looking belonging to looking in coding) more.

Situation a

Alternatively, in embodiments of the present invention, according to the image information of the reference picture of current image block, from this image collection, determine the correspondence image of this current image block, comprising:

According to the image type of the reference picture of current image block, from this image collection, determine the correspondence image of this current image block, different with the image type of the image type and this reference picture that make this correspondence image.

Specifically, such as, coding side from the attribute information of currRefPic, can determine that the image type of currRefPic is long-term or short-term.

If currRefPic is long-term, then colPic is made to be short-term.If currRefPic is short-term, then colPic is made to be long-term.

Specifically, as mentioned above, look in coding more, other reference pictures looking (specifically, be substantially depending on) will be come from and be considered as long-term, the reference picture come from when forward sight is considered as short-term.

Therefore, such as, if the currRefPic selected is short-term, and colPic is long-term, then represent that colPic comes from the reference picture substantially looked.And as mentioned above, the colRefPic substantially used when encoding depending on (i.e. colPic) is generally short-term, that is, the colRefPic of the corresponding blocks colBlock in colPic is short-term.Thus currRefPic and colRefPic is short-term, the effect obtaining TMVP can be improved.

Again such as, if the currRefPic selected is long-term, and colPic is short-term, then represent that colPic comes from the reference picture when forward sight (dependence is looked).And when the image (i.e. colPic) of forward sight usually can with reference to coming from other images depending on (substantially looking) when encoding, that is, the colRefPic of the colBlock in colPic is generally long-term.Thus currRefPic and colRefPic is long-term usually, the effect obtaining TMVP can be improved.

Situation b

According to the reference picture of current image block and POC relation between this image of this current block, from this image collection, determine the correspondence image of this current image block, with make this correspondence image and this current block belonging to POC relation between image and this reference picture and this current block belonging to POC relation between image different

Specifically, such as, coding side from the attribute information of currRefPic, can determine the POC of currRefPic, and, from the POC of image currPic belonging to current block, thus can determine the relation of the POC of POC and the currPic of currRefPic.

If the POC of POC and the currPic of currRefPic is identical, then make the POC of POC and the currPic of colPic different, if the POC of POC and the currPic of currRefPic is different, then make the POC of POC and the currPic of colPic identical.

Specifically, in the prior art, if the POC of POC and the currPic of a certain image (currRefPic or colPic) is identical, then represent that this image comes from substantially to look or Primary layer, represent that the image type of this image is long-term, if the POC of POC and the currPic of a certain image (currRefPic or colPic) is different, then represents that this image comes from dependence and looks or enhancement layer, represent that the image type of this image is short-term.Vice versa, namely, if the image type of a certain image (currRefPic or colPic) is short-term, then represent this image the POC of POC and currPic different, if the image type of a certain image (currRefPic or colPic) is long-term, then represent that the POC of POC and the currPic of this image is identical.

Therefore, such as, if the POC of POC and the currPic of the currRefPic selected is different, then represent that the image type of currRefPic is short-term, if and the POC of POC and the currPic of colPic is identical, then colPic image type is long-term, that is, represent that colPic comes from the reference picture substantially looked.And as mentioned above, the colRefPic substantially used when encoding depending on (i.e. colPic) is generally short-term, that is, the colRefPic of the corresponding blocks colBlock in colPic is short-term.Thus currRefPic and colRefPic is short-term, the effect obtaining TMVP can be improved.

Again such as, if the POC of POC and the currPic of the currRefPic selected is identical, then represent that the currRefPic of selection is long-term, if and the POC of POC and the currPic of currRefPic is different, then represent that colPic is short-term, that is, represent that colPic comes from the reference picture when forward sight (dependence is looked).And when the image (i.e. colPic) of forward sight usually can with reference to coming from other images depending on (substantially looking) when encoding, that is, the colRefPic of the colBlock in colPic is generally long-term.Thus currRefPic and colRefPic is long-term usually, the effect obtaining TMVP can be improved.

Situation c

Layer belonging to the reference picture of current image block, from this image collection, determines the correspondence image of this current image block, to make layer belonging to layer belonging to this correspondence image and this reference picture different.

Specifically, if the currRefPic of current block comes from current layer (enhancement layer), then represent that currRefPic is short-term, now, select the image (long-term) coming from Primary layer as colPic.The reference picture selected when encoding due to the image (comprising this colPic) coming from Primary layer comes from Primary layer, that is, this reference picture is short-term.Therefore, the colRefPic of the corresponding blocks colBlock in colPic is short-term, that is, colRefPic and currRefPic is short-term.

If the currRefPic of current block comes from Primary layer, then represent that currRefPic is long-term, now, the image (short-term) in selection current layer (enhancement layer) is as colPic.Choose Primary layer as a reference because the reference picture in current layer can utilize inter prediction usually when encoding; therefore; the colRefPic of the colBlock of colPic comes from Primary layer (for long-term) usually, that is, colRefPic and currRefPic is long-term.

Situation d

Look belonging to the reference picture of current image block, from this image collection, determine the correspondence image of this current image block, with make belonging to this correspondence image depending on look belonging to this reference picture different.

Specifically, if the currRefPic of current block comes from when in forward sight (dependence is looked), then represent that currRefPic is short-term, now, select to come from the image (long-term) substantially looked as colPic.Due to come from substantially depending on the reference picture selected when encoding of image (comprising this colPic) come from and substantially look, that is, this reference picture is short-term.Therefore, the colRefPic of the corresponding blocks colBlock in colPic is short-term, that is, colRefPic and currRefPic is short-term.

If the currRefPic of current block comes from substantially look, then represent that currRefPic is long-term, now, select when the image (short-term) in forward sight (dependence is looked) is as colPic.Choose due to usually can inter prediction be utilized when the reference picture in forward sight when encoding and substantially regard as reference; therefore; the colRefPic of the colBlock of colPic usually comes from and substantially looks (for long-term), that is, colRefPic and currRefPic is long-term.

Optionally, this image collection comprises at least two the first alternative images, wherein, the type of this first alternative image and the image type of this reference picture different, or

This first alternative image and POC relation between the affiliated image of this current block, and this reference picture and this current block belonging to POC relation between image different, or

The affiliated layer of this first alternative image and the affiliated layer of this reference picture different, or

Belonging to this first alternative image depending on look belonging to this reference picture different, and

This is according to the image information of the reference picture of current image block, from this image collection, determines the correspondence image of this current image block, comprising:

According to the image information of the reference picture of current image block, from these at least two the first alternative images, determine the image that call number in this image collection is minimum, as the correspondence image of this current image block.

Specifically, determining that currRefPic is first kind image (image type short-term or long-term, it is identical or different for closing with the POC between image belonging to this current block, affiliated layer is Primary layer or enhancement layer, belonging to be considered as substantially depending on or rely on look) after, need from the first image list, select Second Type image (type and first kind image different) as colPic, now, if (namely the first image list comprises multiple (at least two) Second Type image, first alternative image), then can from the plurality of first alternative image, select an image as colPic, such as, the image that in multiple first alternative image, call number is minimum can be selected, as colPic, namely, type and the different image of currRefPic can be found from reference picture list according to reference picture index order number from small to large, as colPic.

Like this, because call number is less, represent this image more close to present image, thus the effect of the embodiment of the present invention can be improved further.

Should be understood that above enumerating, select the image that in Second Type image, call number is minimum, be only exemplary as colPic and illustrate, the present invention is not limited thereto, also can with any one first alternative image of selection as colPic.

It should be noted that, in order to enable coding side and decoding end obtain identical TMVP, to realize the coupling of Code And Decode, needing to guarantee that coding side and decoding end select identical colPic.Therefore, can specify that coding side and decoding end are according to identical rules selection colPic, also can after coding side determine colPic, its colPic selected of notice decoding end, thus make decoding end select identical colPic.

According to the method for the acquisition time domain motion vector predictor of the embodiment of the present invention, by first determining currRefPic, and then determine colPic.Different colPic can be got for different image blocks, have good adaptability, contribute to obtaining better compression coding performance.

Alternatively, this image collection comprises at least one second alternative image and at least one the 3rd alternative image, and wherein, the image type of this second alternative image and the 3rd alternative image is different, or

This second alternative image and POC relation between the affiliated image of this current block, and the 3rd alternative image and this current block belonging to POC relation between image different, or

The affiliated layer of this second alternative image and the affiliated layer of the 3rd alternative image different, or

Belonging to this second alternative image depending on look belonging to the 3rd alternative image different, and

The method also comprises:

From this image collection, determine predicted picture, this predicted picture comprises a second alternative image and a 3rd alternative image, and this predicted picture is for determining the correspondence image of each image block in band residing for this current image block; And

This is according to the type of this reference picture, from this image collection, determines the correspondence image of this current image block, comprising:

From this predicted picture, determine the correspondence image of this current image block.

Specifically, in embodiments of the present invention, such as, at least three images (at least one first kind image and at least two Second Type images are comprised at reference picture list, or, at least one Second Type image and at least two first kind images) when, a first kind image and a Second Type image can be selected in advance from this first image list, form new reference picture list (predicted picture).

After determining currRefPic as mentioned above, passable, according to the image type of this currRefPic, in this predicted picture, obtain the colPic of the different types of type and currRefPic.Because (namely this predicted picture includes first kind image and Second Type image, the image of short-term image and long-term, or and the affiliated image of this current block between POC close be identical image and and the affiliated image of this current block between POC to close be different image, or affiliated layer be the image of Primary layer and affiliated layer is the image of enhancement layer, or belonging to be considered as substantially depending on image and affiliated being considered as rely on the image looked), therefore, no matter currRefPic is first kind image or Second Type image, all can obtain type and the different colPic of currRefPic.Thus, can encoding-decoding efficiency be improved.

Alternatively, in embodiments of the present invention, the method also comprises:

From this image collection, determine the reference picture of the second image block, wherein, this second image block and this current image block are in same band;

According to the type of the reference picture of this second image block, from this predicted picture, determine the correspondence image of this second image block, to make this this type of correspondence image of the second image block and the different types of the reference picture of this second image block.

Specifically, because each image block of same slice can use identical correspondence image, therefore, when obtaining and current block is in the TMVP of the second image block of same slice, this this predicted picture can be reused, thus, reduce the complexity of process.

Alternatively, this image collection comprises at least two the second alternative images, and/or

This image collection comprises at least two the 3rd alternative images, and

From this image collection, predicted picture should be determined, comprising:

From this image collection, determine predicted picture, this predicted picture comprises the minimum image of call number in these at least two the second alternative images in this image collection; And/or

From this image collection, determine predicted picture, this predicted picture comprises the minimum image of call number in these at least two the 3rd alternative images in this image collection.

Specifically, selected predicted picture can be the image that in the image and/or this at least two Second Type images that in first kind image, call number is minimum, call number is minimum.

Situation 2

Alternatively, the method comprises:

From this image collection, determine target image, as the correspondence image of each image block in band residing for this current image block; And

This is according to the image information of the correspondence image of current image block, from this image collection, determines the reference picture of this current image block, comprising:

According to the image type of the correspondence image of current image block, from this image collection, determine the reference picture of this current image block, different with the image type of the image type and this correspondence image that make this reference picture; Or

According to the correspondence image of current image block and POC relation between this image of this current block, from this image collection, determine the reference picture of this current image block, with make this reference picture and this current block belonging to POC relation between image and this correspondence image and this current block belonging to POC relation between image different; Or

Layer belonging to the correspondence image of current image block, from this image collection, determines the reference picture of this current image block, to make layer belonging to layer belonging to this reference picture and this correspondence image different; Or

Look belonging to the correspondence image of current image block, from this image collection, determine the reference picture of this current image block, with make belonging to this reference picture depending on look belonging to this correspondence image different.

Specifically, because each image block of same slice can use identical correspondence image, therefore, such as, coding side (or decoding end) can from reference picture list, determines the correspondence image colPic(target image of an image as each image block in slice residing for current block).

Alternatively, can from reference picture list, determine that the minimum image of call number is as colPic.

Should be understood that the method for the above determination colPic enumerated is only exemplary and illustrates, the present invention is not limited thereto, and can determine that arbitrary image in reference picture list is as colPic.

It should be noted that, in order to enable coding side and decoding end obtain identical TMVP, to realize the coupling of Code And Decode, needing to guarantee that coding side and decoding end select identical colPic.Therefore, can specify that coding side and decoding end are according to identical rules selection colPic, also can after coding side determines colPic, its colPic(selected of notice decoding end such as, notice decoding end is as the call number of image in the first image list of this colPic), thus make decoding end select identical colPic.

Thereafter, coding side from reference picture list, can determine currRefPic according to the image information of correspondence image (the image sequence numbering POC relation between this image of image type and this current block, in hierarchical coding belonging to layer or the arbitrary information in looking belonging to looking in coding) more.

Situation e

Alternatively, in embodiments of the present invention, according to the image information of the correspondence image of current image block, from this image collection, determine the reference picture of this current image block, comprising:

According to the image type of the correspondence image of current image block, from this image collection, determine the reference picture of this current image block, different with the image type of the image type and this correspondence image that make this reference picture.

Specifically, such as, coding side from the attribute information of colPic, can determine that the image type of colPic is long-term or short-term.

If colPic is long-term, then currRefPic is made to be short-term.If colPic is short-term, then currRefPic is made to be long-term.

Specifically, as mentioned above, look in coding more, other correspondence image of looking (specifically, be substantially depending on) will be come from and be considered as long-term, the correspondence image come from when forward sight is considered as short-term.

Therefore, such as, if the colPic selected is short-term, and currRefPic is long-term, then represent that colPic comes from the correspondence image when forward sight (dependence is looked).And when the image (i.e. colPic) of forward sight usually can with reference to coming from other images depending on (substantially looking) when encoding, that is, the colRefPic of the colBlock in colPic is generally long-term.Thus colPic and colRefPic is long-term usually, the effect obtaining TMVP can be improved.

Again such as, if the colPic selected is long-term, and currRefPic is short-term, then represent that colPic comes from the correspondence image of substantially looking.Substantially the colRefPic used when encoding depending on (i.e. colPic) is generally short-term, and that is, the colRefPic of the corresponding blocks colBlock in colPic is short-term.Thus colPic and colRefPic is short-term, the effect obtaining TMVP can be improved.

Situation f

According to the correspondence image of current image block and POC relation between this image of this current block, from this image collection, determine the reference picture of this current image block, with make this reference picture and this current block belonging to POC relation between image and this correspondence image and this current block belonging to POC relation between image different

Specifically, such as, coding side from the attribute information of colPic, can determine the POC of colPic, and, from the POC of image currPic belonging to current block, thus can determine the relation of the POC of POC and the currPic of colPic.

If the POC of POC and the currPic of colPic is identical, then make the POC of POC and the currPic of currRefPic different, if the POC of POC and the currPic of colPic is different, then make the POC of POC and the currPic of currRefPic identical.

Therefore, such as, if the POC of POC and currPic of the colPic selected is different, then represent that the image type of colPic is short-term, and if the POC of POC and the currPic of currRefPic is identical, then currRefPic image type is long-term.And as mentioned above, dependence comes from usually depending on the colRefPic that (i.e. colPic) uses when encoding to be looked substantially, that is, the colRefPic of the corresponding blocks colBlock in currRefPic is long-term.Thus colPic and colRefPic is long-term, the effect obtaining TMVP can be improved.

Again such as, if the POC of POC and the currPic of the colPic selected is identical, then represent that the colPic of selection is long-term, if and the POC of POC and the currPic of colPic is different, then represent that currRefPic is short-term, that is, represent that currRefPic comes from the correspondence image when forward sight (dependence is looked).And the image substantially looked (i.e. colPic) uses the reference picture of short-term when encoding, that is, the colRefPic of the colBlock in colPic is generally short-term.Thus colPic and colRefPic is short-term usually, the effect obtaining TMVP can be improved.

Situation g

Layer belonging to the correspondence image of current image block, from this image collection, determines the reference picture of this current image block, to make layer belonging to layer belonging to this reference picture and this correspondence image different.

Specifically, if the colPic of current block comes from current layer (enhancement layer), then represent that colPic is short-term, now, select the image (long-term) coming from Primary layer as currRefPic.Choose Primary layer as a reference because the correspondence image in current layer can utilize inter prediction usually when encoding; therefore; the colRefPic of the colBlock of colPic comes from Primary layer (for long-term) usually, that is, colRefPic and colPic is long-term.

If the colPic of current block comes from Primary layer, then represent that colPic is long-term, now, the image (short-term) in selection current layer (enhancement layer) is as currRefPic.The reference picture selected when encoding due to the image (comprising this colPic) coming from Primary layer comes from Primary layer, that is, this reference picture is short-term.Therefore, the colRefPic of the corresponding blocks colBlock in colPic is short-term, that is, colRefPic and colPic is short-term.

Situation h

Specifically, if the colPic of current block comes from when in forward sight (dependence is looked), then represent that colPic is short-term, now, select to come from the image (long-term) substantially looked as currRefPic.Choose due to usually can inter prediction be utilized when the correspondence image in forward sight when encoding and substantially regard as reference; therefore; the colRefPic of the colBlock in colPic usually comes from and substantially looks (for long-term), that is, colRefPic and colPic is long-term.

If the colPic of current block comes from substantially look, then represent that colPic is long-term, now, select when the image (short-term) in forward sight (dependence is looked) is as currRefPic.Due to come from substantially depending on the reference picture selected when encoding of image (comprising this colPic) come from and substantially look, that is, this reference picture is short-term.Therefore, the colRefPic of the corresponding blocks colBlock in colPic is short-term, that is, colRefPic and colPic is short-term.

Optionally, this image collection comprises at least two the 4th alternative images, wherein, the type of the 4th alternative image and the image type of this reference picture different, or

4th alternative image and POC relation between the affiliated image of this current block, and this reference picture and this current block belonging to POC relation between image different, or

The affiliated layer of the 4th alternative image and the affiliated layer of this reference picture different, or

Belonging to 4th alternative image depending on look belonging to this reference picture different, and

This is according to the image information of this correspondence image, from this image collection, determines the reference picture of this current image block, comprising:

According to the image information of this correspondence image, from these at least two the 4th alternative images, determine the image that call number in this image collection is minimum, as the reference picture of this current image block.

Specifically, determining that colPic is first kind image (image type short-term or long-term, it is identical or different for closing with the POC between image belonging to this current block, affiliated layer is Primary layer or enhancement layer, belonging to be considered as substantially depending on or rely on look) after, need from reference picture list, select Second Type image (type and first kind image different) as currRefPic, now, if (namely reference picture list comprises multiple (at least two) Second Type image, 4th alternative image), then can from the plurality of 4th alternative image, select an image as currRefPic, such as, the image that in multiple 4th alternative image, call number is minimum can be selected, as currRefPic, namely, type can be found from reference picture list and the different image of colPic is currRefPic according to reference picture index order number from small to large.

Should be understood that above enumerating, select the image that in the 4th alternative image, call number is minimum, be only exemplary as currRefPic and illustrate, the present invention is not limited thereto, also can with any one second alternative image of selection as currRefPic.

According to the method for the acquisition time domain motion vector predictor of the embodiment of the present invention, by first determining the colPic of current block, and then determine the currRefPic of current block.Because the colPic of image block each in same slice is identical, therefore, determined currRefPic is also identical, once determines in same slice, can effectively reduce process complexity.In addition, for all image blocks in whole slice, all use same colPic, effectively can reduce taking cache resources.

According to the method for embodiment of the present invention domain motion vector predictor really, by selecting reference picture and the correspondence image of current block, make the reference picture of current block and the image type of correspondence image, and the POC relation belonging to current block between image block, belonging to layer or described in look different, the effect making the reference picture of this current block and the reference picture of this correspondence image block belong to identical reference picture type can be improved, thus, in the time domain of the motion vector of this corresponding blocks of time domain Distance geometry of the motion vector of current block apart from different, the effect of the time domain motion vector predictor obtaining current block can be improved.

Should understand, be enumerated above the image information according to the image in image collection, from this image collection, determine reference picture and the correspondence image of current image block, with the POC relation between image block belonging to the image type of the reference picture and correspondence image that make current block and current block, affiliated layer or described in look different embodiment, but the present invention is not limited thereto.Other adopt the image information according to the image in image collection, determine reference picture and the correspondence image of current image block, all fall into protection scope of the present invention with the embodiment of the effect improving the time domain motion vector predictor obtaining current block.

Such as, if the correspondence image of the current block selected is short-term, then representing this correspondence image comes from when forward sight or current layer (not substantially is looked or substantially increased), if deserve forward sight or current layer do not use substantially look or Primary layer as a reference, and use the reference picture of short-term, namely colRefPic is short-term, then the image of short-term can be selected as currRefPic.

Again such as, when substantially looking or Primary layer uses the reference picture of long-term, if the currRefPic selected is long-term, and colPic is long-term, then represent that colPic comes from the reference picture substantially looked.And as mentioned above, the colRefPic substantially used when encoding depending on (i.e. colPic) is long-term, that is, the colRefPic of the corresponding blocks colBlock in colPic is long-term.Thus currRefPic and colRefPic is long-term, the effect obtaining TMVP can be improved.

Further, in embodiments of the present invention, rely on depending on one can be had also can to have multiple, current block with reference to the image substantially looked, also can rely on reference to other image looked.Equally, enhancement layer can have one also can have multiple, and current block can with reference to the image of Primary layer, also can with reference to the image of other enhancement layers.

At S120, the correspondence image block of this current image block in this correspondence image can be determined, and determine that the process of corresponding picture block and method can be same as the prior art, in order to avoid repeating, the description thereof will be omitted here.

At S130, can according to this reference picture and this correspondence image block, determine the time domain motion vector predictor of this current image block, specifically, the motion vector MV of this corresponding picture block can be obtained, and, if the time domain distance of the MV of the correspondence image block of the time domain Distance geometry current block of the MV of current block is different, then can, according to this reference picture and this correspondence image block, above-mentioned formula 1 be utilized to carry out the convergent-divergent of MV.

Alternatively, in embodiments of the present invention, the affiliated image of this current image block is bidirectional predictive picture, and this correspondence image is bidirectional predictive picture, and

This, according to this reference picture and this correspondence image block, is determined the time domain motion vector predictor of this current image block, comprising:

According to the image information of this correspondence image, determine the motion vector of this correspondence image block;

According to the motion vector of this reference picture with this correspondence image block, determine the time domain motion vector predictor of this current image block.

Further, this determines the motion vector of this correspondence image block, comprises further:

When the image type of this correspondence image is long-term type, if the reference picture of this current image block comes from the first reference picture list of the affiliated image of this current image block, then determine the motion vector of correspondence image block, the first reference picture list of this correspondence image is belonged to the image of the motion vector points making this correspondence image block, if the reference picture of this current image block comes from the second reference picture list of the affiliated image of this current image block, then determine the motion vector of correspondence image block, the second reference picture list of this correspondence image is belonged to the image of the motion vector points making this correspondence image block, or

When the POC of this correspondence image is with when belonging to this current image block, the POC of image is identical, if the reference picture of this current image block comes from the first reference picture list of the affiliated image of this current image block, then determine the motion vector of correspondence image block, the first reference picture list of this correspondence image is belonged to the image of the motion vector points making this correspondence image block, if the reference picture of this current image block comes from the second reference picture list of the affiliated image of this current image block, then determine the motion vector of correspondence image block, the second reference picture list of this correspondence image is belonged to the image of the motion vector points making this correspondence image block, or

When belonging to this correspondence image, layer is Primary layer, if the reference picture of this current image block comes from the first reference picture list of the affiliated image of this current image block, then determine the motion vector of correspondence image block, the image belonging to this correspondence image with the image of the motion vector points making this correspondence image block belongs to the first reference picture list, if the reference picture of this current image block comes from the second reference picture list of the affiliated image of this current image block, then determine the motion vector of correspondence image block, the second reference picture list of this correspondence image is belonged to the image of the motion vector points making this correspondence image block, or

Basic apparent time is considered as belonging to this correspondence image, if the reference picture of this current image block comes from the first reference picture list of the affiliated image of this current image block, then determine the motion vector of correspondence image block, the first reference picture list is belonged to the image of this correspondence image making the motion vector points of this correspondence image block, if the reference picture of this current image block comes from the second reference picture list of the affiliated image of this current image block, then determine the motion vector of correspondence image block, the second reference picture list of this correspondence image is belonged to the image of the motion vector points making this correspondence image block.

Specifically, in the prior art, when obtaining TMVP, specify that to have call number be that the reference picture of 0 is as the reference picture of current block.For B-slice, can select two reference pictures, be that in the first reference picture list (list 0) and the second reference picture list (list 1), call number is the reference picture of 0 respectively.

Further, the correspondence image of current block comprises two MV, that is, colMV_L0 and colMV_L1, and the list utilizing colPic corresponding is to select the colMV_L1 predicted value as MV in colMV_L0.If colPic comes from list 0, then select the collMV_L1 pointing to list 1; If colPic comes from list 1, then select the colMV_L0 pointing to list 0.

The situation of the POC of present image is not equal to (before or after namely colPic is positioned at present image at the POC of such as colPic, colPic comes from the image when forward sight in other words) under, there is certain corresponding relation in the currMV of the list that colPic is corresponding and current block, namely, the list of colPic is after list 1 illustrates that colPic is positioned at present image, now, the colMV_L0 pointing to list 0 may pass present image, this that is, the currMV correlation of colMV_L0 and current block is higher, therefore selects colMV_L0.

But, if colPic come from substantially look or Primary layer (namely, the image type of colPic is long-term, or the POC of colPic is identical with the POC of this currPic), now, the relation do not determined between the list that colPic is corresponding and current block currMV, is helpless to select suitable colMV for calculating the currMV of current block.On the contrary, if the reference picture of the current block selected from list and the list pointed to of the colMV of selection different, the acquisition of TMVP can be had a strong impact on.

Therefore, in embodiments of the present invention, list that can be corresponding according to current block, select colMV, and, after the reference picture currRefPic of current block determines, can according to currRefPic from list, determine the list of the correspondence of current block and the reference key in this list.

Specifically, if list corresponding to current block is list 0(first reference picture list), then select the colMV_L0 pointing to list 0.

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

Like this, current block and corresponding blocks have identical POC and have identical MV direction, and both MV correlations are higher, contribute to improving TMVP precision of prediction.

Fig. 3 shows the indicative flowchart according to the embodiment of the present invention method 200 of domain motion vector predictor really.Further, the subject of implementation of the method 200 can be coding side, also can be decoding end, and the present invention is also not particularly limited.As shown in Figure 3, the method 200 comprises:

S210, determines reference picture and the correspondence image of current image block, and wherein, the affiliated image of this current image block is bidirectional predictive picture, and this correspondence image is bidirectional predictive picture;

S220, determines the correspondence image block of this current image block in this correspondence image;

S230, according to the image information of this correspondence image, determine the motion vector of this correspondence image block, this image information comprises following arbitrary information: the image sequence numbering POC relation between image type and the affiliated image of this current block, layer belonging in hierarchical coding or the arbitrary information in looking belonging to looking in coding more, this image type is divided into long-term type and short-term type, this POC relation is divided into POC identical different with POC, this affiliated layer is divided into Primary layer and enhancement layer, this affiliated depending on be divided into substantially depending on and dependence look;

S240, according to the motion vector of this reference picture with this correspondence image block, determines the time domain motion vector predictor of this current image block.

Further, in embodiments of the present invention, this determines the motion vector of this correspondence image block, comprises further:

When the image type of this correspondence image is long-term type, if the reference picture of this current image block comes from the first reference picture list of the affiliated image of this current image block, then determine the motion vector of correspondence image block, the first reference picture list is belonged to the image of this correspondence image making the motion vector points of this correspondence image block, if the reference picture of this current image block comes from the second reference picture list of the affiliated image of this current image block, then determine the motion vector of correspondence image block, the second reference picture list of this correspondence image is belonged to the image of the motion vector points making this correspondence image block, or

When belonging to this correspondence image, layer is Primary layer, if the reference picture of this current image block comes from the first reference picture list of the affiliated image of this current image block, then determine the motion vector of correspondence image block, the first reference picture list of this correspondence image is belonged to the image of the motion vector points making this correspondence image block, if the reference picture of this current image block comes from the second reference picture list of the affiliated image of this current image block, then determine the motion vector of correspondence image block, the second reference picture list of this correspondence image is belonged to the image of the motion vector points making this correspondence image block, or

Basic apparent time is considered as belonging to this correspondence image, if the reference picture of this current image block comes from the first reference picture list of the affiliated image of this current image block, then determine the motion vector of correspondence image block, the first reference picture list of this correspondence image is belonged to the image of the motion vector points making this correspondence image block, if the reference picture of this current image block comes from the second reference picture list of the affiliated image of this current image block, then determine the motion vector of correspondence image block, the second reference picture list of this correspondence image is belonged to the image of the motion vector points making this correspondence image block.

Specifically, in the prior art, when obtaining TMVP, specify that to have call number be that the reference picture of 0 is as the reference picture of current block.For B-slice, can select two reference pictures, be that in the first reference picture list (list 0) and the second reference picture list (list1), call number is the reference picture of 0 respectively.

As shown in Figure 4, the situation of the POC of present image is not equal to (before or after namely colPic is positioned at present image at the POC of such as colPic, colPic comes from the image when forward sight in other words) under, there is certain corresponding relation in the currMV of the list that colPic is corresponding and current block, namely, the list of colPic is after list 1 illustrates that colPic is positioned at present image, now, the colMV_L0 pointing to list 0 may pass present image, this that is, the currMV correlation of colMV_L0 and current block is higher, therefore selects colMV_L0.

But, as shown in Figure 5, if colPic come from substantially look or Primary layer (namely, the image type of colPic is long-term, or the POC of colPic is identical with the POC of this currPic), now, the relation do not determined between the list that colPic is corresponding and current block currMV, is helpless to select suitable colMV for calculating the currMV of current block.On the contrary, if the reference picture of the current block selected from list and the list pointed to of the colMV of selection different, the acquisition of TMVP can be had a strong impact on.

Therefore, in embodiments of the present invention, substantially look or Primary layer (that is, the image type of colPic is long-term, or the POC of colPic is identical with the POC of this currPic) if colPic comes from, list that then can be corresponding according to current block, select colMV, and, after the reference picture currRefPic of current block determines, can according to currRefPic from list, determine the list of the correspondence of current block and the reference key in this list.

Should understand, be enumerated above, substantially look or Primary layer if colPic comes from, list that then can be corresponding according to current block, select colMV, but the present invention is not limited thereto, when colPic comes from when forward sight (dependence is looked) or current layer (enhancement layer), also list that can be corresponding according to current block, selects colMV.

Above, composition graphs 1 to Fig. 5 describes the method for embodiment of the present invention domain motion vector predictor really, below, composition graphs 6 and Fig. 7 illustrate the device of embodiment of the present invention domain motion vector predictor really.

Fig. 6 shows the schematic block diagram according to the embodiment of the present invention device 300 of domain motion vector predictor really.As shown in Figure 6, this device 300 comprises:

Determining unit 310, for the image information of the reference picture according to current image block, from image collection, determine the correspondence image of this current image block, wherein, this image information comprises following arbitrary information: image type, and the image sequence numbering POC relation belonging to this current block between image, layer belonging in hierarchical coding or look belonging to looking in coding more, this image type is divided into long-term type and short-term type, this POC relation is divided into POC identical different with POC, this affiliated layer is divided into Primary layer and enhancement layer, this affiliated depending on be divided into substantially depending on and dependence look, or

For the image information of the correspondence image according to current image block, from this image collection, determine the reference picture of this current image block, wherein, this image information comprises following arbitrary information: the image sequence numbering POC relation between image type and the affiliated image of this current block, layer belonging to image or look belonging to looking in coding in hierarchical coding more, this image type is divided into long-term type and short-term type, this POC relation is divided into POC identical different with POC, this affiliated layer is divided into Primary layer and enhancement layer, this affiliated depending on be divided into substantially depending on and dependence look;

Processing unit 320, for determining the correspondence image block of this current image block in this correspondence image;

For according to this reference picture and this correspondence image block, determine the time domain motion vector predictor of this current image block.

Alternatively, this current image block relies on view picture, and this image collection comprises with this dependence depending on the corresponding image substantially looked, or

Alternatively, this determining unit 310, specifically for the image type of the reference picture according to current image block, from this image collection, determines the correspondence image of this current image block, different with the image type of the image type and this reference picture that make this correspondence image; Or

For the reference picture according to current image block and POC relation between this image of this current block, from this image collection, determine the correspondence image of this current image block, with make this correspondence image and this current block belonging to POC relation between image and this reference picture and this current block belonging to POC relation between image different; Or

For layer belonging to the reference picture of current image block, from this image collection, determine the correspondence image of this current image block, to make layer belonging to layer belonging to this correspondence image and this reference picture different; Or

For looking belonging to the reference picture of current image block, from this image collection, determine the correspondence image of this current image block, with make belonging to this correspondence image depending on look belonging to this reference picture different.

Alternatively, this image collection comprises at least two the first alternative images, wherein, the type of this first alternative image and the image type of this reference picture different, or

This determining unit 310, specifically for the image information according to this reference picture, from these at least two the first alternative images, determines the image that call number in this image collection is minimum, as the correspondence image of this current image block.

This determining unit 310, also for from this image collection, determines predicted picture, and this predicted picture comprises a second alternative image and a 3rd alternative image, and this predicted picture is for determining the correspondence image of each image block in band residing for this current image block;

For from this predicted picture, determine the correspondence image of this current image block.

This image collection comprises at least two the 3rd alternative images, and

This determining unit 310, specifically for from this image collection, determines predicted picture, and this predicted picture comprises the minimum image of call number in these at least two the second alternative images in this image collection; And/or

For from this image collection, determine predicted picture, this predicted picture comprises the minimum image of call number in these at least two the 3rd alternative images in this image collection.

Alternatively, this determining unit 310, specifically for from this image collection, determines target image, as the correspondence image of each image block in band residing for this current image block;

For the image type of the correspondence image according to current image block, from this image collection, determine the reference picture of this current image block, different with the image type of the image type and this correspondence image that make this reference picture; Or

For the correspondence image according to current image block and POC relation between this image of this current block, from this image collection, determine the reference picture of this current image block, with make this reference picture and this current block belonging to POC relation between image and this correspondence image and this current block belonging to POC relation between image different; Or

For layer belonging to the correspondence image of current image block, from this image collection, determine the reference picture of this current image block, to make layer belonging to layer belonging to this reference picture and this correspondence image different; Or

For looking belonging to the correspondence image of current image block, from this image collection, determine the reference picture of this current image block, with make belonging to this reference picture depending on look belonging to this correspondence image different.

Alternatively, this image collection comprises at least two the 4th alternative images, wherein, the type of the 4th alternative image and the image type of this reference picture different, or

This determining unit 310, specifically for the image information according to this correspondence image, from these at least two the 4th alternative images, determines the image that call number in this image collection is minimum, as the reference picture of this current image block.

Alternatively, the affiliated image of this current image block is bidirectional predictive picture, and this correspondence image is bidirectional predictive picture, and

This processing unit 320, specifically for the image information according to this correspondence image, determines the motion vector of this correspondence image block;

For the motion vector according to this reference picture and this correspondence image block, determine the time domain motion vector predictor of this current image block.；

Alternatively, this processing unit 320 is specifically for when the image type of this correspondence image is long-term type, if the reference picture of this current image block comes from the first reference picture list of the affiliated image of this current image block, then determine the motion vector of correspondence image block, the first reference picture list of this correspondence image is belonged to the image of the motion vector points making this correspondence image block, if the reference picture of this current image block comes from the second reference picture list of the affiliated image of this current image block, then determine the motion vector of correspondence image block, the second reference picture list of this correspondence image is belonged to the image of the motion vector points making this correspondence image block, or

For when the POC of this correspondence image is with when belonging to this current image block, the POC of image is identical, if the reference picture of this current image block comes from the first reference picture list of the affiliated image of this current image block, then determine the motion vector of correspondence image block, the first reference picture list of this correspondence image is belonged to the image of the motion vector points making this correspondence image block, if the reference picture of this current image block comes from the second reference picture list of the affiliated image of this current image block, then determine the motion vector of correspondence image block, the second reference picture list of this correspondence image is belonged to the image of the motion vector points making this correspondence image block, or

For when belonging to this correspondence image, layer is Primary layer, if the reference picture of this current image block comes from the first reference picture list of the affiliated image of this current image block, then determine the motion vector of correspondence image block, the image belonging to this correspondence image with the image of the motion vector points making this correspondence image block belongs to the first reference picture list, if the reference picture of this current image block comes from the second reference picture list of the affiliated image of this current image block, then determine the motion vector of correspondence image block, the second reference picture list of this correspondence image is belonged to the image of the motion vector points making this correspondence image block, or

For being considered as basic apparent time belonging to this correspondence image, if the reference picture of this current image block comes from the first reference picture list of the affiliated image of this current image block, then determine the motion vector of correspondence image block, the first reference picture list is belonged to the image of this correspondence image making the motion vector points of this correspondence image block, if the reference picture of this current image block comes from the second reference picture list of the affiliated image of this current image block, then determine the motion vector of correspondence image block, the second reference picture list of this correspondence image is belonged to the image of the motion vector points making this correspondence image block.

According to the device 300 of embodiment of the present invention domain motion vector predictor really as the subject of implementation of the embodiment of the present invention method 100 of domain motion vector predictor really, may correspond to the coding side in the method for the embodiment of the present invention or decoding end, and, each unit in the device 300 of time domain motion vector predictor and module and above-mentioned other operation and/or functions are determined in Fig. 6, be respectively used to each flow process of the method 100 realized in Fig. 2, for simplicity, do not repeat them here.

According to the device of embodiment of the present invention domain motion vector predictor really, by selecting reference picture and the correspondence image of current block, make the reference picture of current block and the image type of correspondence image, and the POC relation belonging to current block between image block, maybe this looks different affiliated layer, the effect making the reference picture of this current block and the reference picture of this correspondence image block belong to identical reference picture type can be improved, thus, in the time domain of the motion vector of this corresponding blocks of time domain Distance geometry of the motion vector of current block apart from different, the effect of the time domain motion vector predictor obtaining current block can be improved.

Fig. 7 shows the schematic block diagram according to the embodiment of the present invention device 400 of domain motion vector predictor really.As shown in Figure 7, this device 400 comprises:

Determining unit 410, for determining reference picture and the correspondence image of current image block, wherein, the affiliated image of this current image block is bidirectional predictive picture, and this correspondence image is bidirectional predictive picture;

For determining the correspondence image block of this current image block in this correspondence image;

Processing unit 420, for the image information according to this correspondence image, determine the motion vector of this correspondence image block, this image information comprises following arbitrary information: the image sequence numbering POC relation between image type and the affiliated image of this current block, layer belonging in hierarchical coding or the arbitrary information in looking belonging to looking in coding more, this image type is divided into long-term type and short-term type, this POC relation is divided into POC identical different with POC, this affiliated layer is divided into Primary layer and enhancement layer, this affiliated depending on be divided into substantially depending on and dependence look;

For the motion vector according to this reference picture and this correspondence image block, determine the time domain motion vector predictor of this current image block.

Alternatively, this processing unit 420 is specifically for when the image type of this correspondence image is long-term type, if the reference picture of this current image block comes from the first reference picture list of the affiliated image of this current image block, then determine the motion vector of correspondence image block, the first reference picture list of this correspondence image is belonged to the image of the motion vector points making this correspondence image block, if the reference picture of this current image block comes from the second reference picture list of the affiliated image of this current image block, then determine the motion vector of correspondence image block, the second reference picture list of this correspondence image is belonged to the image of the motion vector points making this correspondence image block, or

According to the device 400 of embodiment of the present invention domain motion vector predictor really as the subject of implementation of the embodiment of the present invention method 200 of domain motion vector predictor really, may correspond to the coding side in the method for the embodiment of the present invention or decoding end, and, each unit in the device 400 of time domain motion vector predictor and module and above-mentioned other operation and/or functions are determined in Fig. 7, be respectively used to each flow process of the method 200 realized in Fig. 3, for simplicity, do not repeat them here.

Should be understood that term "and/or" herein, being only a kind of incidence relation describing affiliated partner, can there are three kinds of relations in expression, and such as, A and/or B, can represent: individualism A, exists A and B simultaneously, these three kinds of situations of individualism B.In addition, character "/" herein, general expression forward-backward correlation is to the relation liking a kind of "or".

Should understand, in various embodiments of the present invention, the size of the sequence number of above-mentioned each process does not also mean that the priority of execution sequence, and the execution sequence of each process should be determined with its function and internal logic, and should not form any restriction to the implementation process of the embodiment of the present invention.

Those of ordinary skill in the art can recognize, in conjunction with unit and the algorithm steps of each example of embodiment disclosed herein description, can realize with the combination of electronic hardware or computer software and electronic hardware.These functions perform with hardware or software mode actually, depend on application-specific and the design constraint of technical scheme.Professional and technical personnel can use distinct methods to realize described function to each specifically should being used for, but this realization should not thought and exceeds scope of the present invention.

Those skilled in the art can be well understood to, and for convenience and simplicity of description, the specific works process of the system of foregoing description, device and unit, with reference to the corresponding process in preceding method embodiment, can not repeat them here.

In several embodiments that the application provides, should be understood that disclosed system, apparatus and method can realize by another way.Such as, device embodiment described above is only schematic, such as, the division of described unit, be only a kind of logic function to divide, actual can have other dividing mode when realizing, such as multiple unit or assembly can in conjunction with or another system can be integrated into, or some features can be ignored, or do not perform.Another point, shown or discussed coupling each other or direct-coupling or communication connection can be by some interfaces, and the indirect coupling of device or unit or communication connection can be electrical, machinery or other form.

The described unit illustrated as separating component or can may not be and physically separates, and the parts as unit display can be or may not be physical location, namely can be positioned at a place, or also can be distributed in multiple network element.Some or all of unit wherein can be selected according to the actual needs to realize the object of the present embodiment scheme.

In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, also can be that the independent physics of unit exists, also can two or more unit in a unit integrated.

If described function using the form of SFU software functional unit realize and as independently production marketing or use time, can be stored in a computer read/write memory medium.Based on such understanding, the part of the part that technical scheme of the present invention contributes to prior art in essence in other words or this technical scheme can embody with the form of software product, this computer software product is stored in a storage medium, comprising some instructions in order to make a computer equipment (can be personal computer, server, or the network equipment etc.) perform all or part of step of method described in each embodiment of the present invention.And aforesaid storage medium comprises: USB flash disk, portable hard drive, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disc or CD etc. various can be program code stored medium.

The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; change can be expected easily or replace, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of described claim.

Claims

1. determine a method for time domain motion vector predictor, it is characterized in that, described method comprises:

According to the image information of the reference picture of current image block, from image collection, determine the correspondence image of described current image block, wherein, described image information comprises following arbitrary information: the image sequence numbering POC relation between image type and the affiliated image of described current block, layer belonging in hierarchical coding or look belonging to looking in coding more, described image type is divided into long-term type and short-term type, described POC relation is divided into POC identical different with POC, described belonging to layer be divided into Primary layer and enhancement layer, belonging to described depending on be divided into substantially depending on and dependence look; Or

According to the image information of the correspondence image of current image block, from image collection, determine the reference picture of described current image block, wherein, described image information comprises following arbitrary information: image type, and the image sequence numbering POC relation belonging to described current block between image, layer belonging to image or look belonging to looking in coding in hierarchical coding more, described image type is divided into long-term type and short-term type, described POC relation is divided into POC identical different with POC, belonging to described, layer is divided into Primary layer and enhancement layer, belonging to described depending on be divided into substantially depending on and dependence look,

Determine the correspondence image block of described current image block in described correspondence image;

According to described reference picture and described correspondence image block, determine the time domain motion vector predictor of described current image block.

2. method according to claim 1, is characterized in that, described current image block relies on the image block in view picture, and described image collection comprises with described dependence depending on the corresponding image substantially looked, or

Described current image block is the image block in enhancement layer image, and described image collection comprises the image of the Primary layer corresponding with described enhancement layer image.

3. method according to claim 1 and 2, is characterized in that, the image information of the described reference picture according to current image block, from described image collection, determines the correspondence image of described current image block, comprising:

According to the image type of the reference picture of current image block, from described image collection, determine the correspondence image of described current image block, to make the image type of the image type of described correspondence image and described reference picture different; Or

According to the reference picture of current image block and described current block belonging to POC relation between image, from described image collection, determine the correspondence image of described current image block, with make described correspondence image and described current block belonging to POC relation between image and described reference picture and described current block belonging to POC relation between image different; Or

Layer belonging to the reference picture of current image block, from described image collection, determines the correspondence image of described current image block, to make layer belonging to layer belonging to described correspondence image and described reference picture different; Or

Look belonging to the reference picture of current image block, from described image collection, determine the correspondence image of described current image block, with make belonging to described correspondence image depending on look belonging to described reference picture different.

4. method according to claim 3, is characterized in that, described image collection comprises at least two the first alternative images, wherein, the type of described first alternative image and the image type of described reference picture different, or

Described first alternative image and POC relation between the affiliated image of described current block, and described reference picture and described current block belonging to POC relation between image different, or

The affiliated layer of described first alternative image and the affiliated layer of described reference picture different, or

Belonging to described first alternative image depending on look belonging to described reference picture different, and

The image information of the described reference picture according to current image block, from described image collection, determine the correspondence image of described current image block, comprising:

According to the image information of the reference picture of current image block, from described at least two the first alternative images, determine the image that call number in described image collection is minimum, as the correspondence image of described current image block.

5. method according to claim 3, is characterized in that, described image collection comprises at least one second alternative image and at least one the 3rd alternative image, and wherein, the image type of described second alternative image and described 3rd alternative image is different, or

Described second alternative image and POC relation between the affiliated image of described current block, and described 3rd alternative image and described current block belonging to POC relation between image different, or

The affiliated layer of described second alternative image and the affiliated layer of described 3rd alternative image different, or

Belonging to described second alternative image depending on look belonging to described 3rd alternative image different, and

Described method also comprises:

From described image collection, determine predicted picture, described predicted picture comprises a second alternative image and a 3rd alternative image, and described predicted picture is for determining the correspondence image of each image block in band residing for described current image block; And

The described type according to described reference picture, from described image collection, determine the correspondence image of described current image block, comprising:

From described predicted picture, determine the correspondence image of described current image block.

6. method according to claim 5, is characterized in that, described image collection comprises at least two the second alternative images, and/or

Described image collection comprises at least two the 3rd alternative images, and

Describedly determine predicted picture from described image collection, comprising:

From described image collection, determine predicted picture, the image that the call number at least two the second alternative images described in described predicted picture comprises in described image collection is minimum; And/or

From described image collection, determine predicted picture, the image that the call number at least two the 3rd alternative images described in described predicted picture comprises in described image collection is minimum.

7. method according to claim 3, is characterized in that, described method comprises:

From described image collection, determine target image, as the correspondence image of each image block in band residing for described current image block; And

The image information of the described correspondence image according to current image block, from described image collection, determine the reference picture of described current image block, comprising:

According to the image type of the correspondence image of current image block, from described image collection, determine the reference picture of described current image block, to make the image type of the image type of described reference picture and described correspondence image different; Or

According to the correspondence image of current image block and described current block belonging to POC relation between image, from described image collection, determine the reference picture of described current image block, with make described reference picture and described current block belonging to POC relation between image and described correspondence image and described current block belonging to POC relation between image different; Or

Layer belonging to the correspondence image of current image block, from described image collection, determines the reference picture of described current image block, to make layer belonging to layer belonging to described reference picture and described correspondence image different; Or

Look belonging to the correspondence image of current image block, from described image collection, determine the reference picture of described current image block, with make belonging to described reference picture depending on look belonging to described correspondence image different.

8. method according to claim 7, is characterized in that, described image collection comprises at least two the 4th alternative images, wherein, the type of described 4th alternative image and the image type of described correspondence image different, or

Described 4th alternative image and POC relation between the affiliated image of described current block, and described correspondence image and described current block belonging to POC relation between image different, or

The affiliated layer of described 4th alternative image and the affiliated layer of described reference picture different, or

Belonging to described 4th alternative image depending on look belonging to described reference picture different, and

The described image information according to described correspondence image, from described image collection, determine the reference picture of described current image block, comprising:

According to the image information of described correspondence image, from described at least two the 4th alternative images, determine the image that call number in described image collection is minimum, as the reference picture of described current image block.

9. method according to claim 1 and 2, is characterized in that, the affiliated image of described current image block is bidirectional predictive picture, and described correspondence image is bidirectional predictive picture, and

Described according to described reference picture and described correspondence image block, determine the time domain motion vector predictor of described current image block, comprising:

According to the image information of described correspondence image, determine the motion vector of described correspondence image block;

According to the motion vector of described reference picture and described correspondence image block, determine the time domain motion vector predictor of described current image block.

10. method according to claim 9, is characterized in that, the described image information according to described correspondence image, determines the motion vector of described correspondence image block, specifically comprises:

When the image type of described correspondence image is long-term type, if the reference picture of described current image block comes from the first reference picture list of the affiliated image of described current image block, then determine the motion vector of correspondence image block, the first reference picture list of described correspondence image is belonged to the image of the motion vector points making described correspondence image block, if the reference picture of described current image block comes from the second reference picture list of the affiliated image of described current image block, then determine the motion vector of correspondence image block, the second reference picture list of described correspondence image is belonged to the image of the motion vector points making described correspondence image block, or

When the POC of described correspondence image is with when belonging to described current image block, the POC of image is identical, if the reference picture of described current image block comes from the first reference picture list of the affiliated image of described current image block, then determine the motion vector of correspondence image block, the first reference picture list of described correspondence image is belonged to the image of the motion vector points making described correspondence image block, if the reference picture of described current image block comes from the second reference picture list of the affiliated image of described current image block, then determine the motion vector of correspondence image block, the second reference picture list of described correspondence image is belonged to the image of the motion vector points making described correspondence image block, or

When belonging to described correspondence image, layer is Primary layer, if the reference picture of described current image block comes from the first reference picture list of the affiliated image of described current image block, then determine the motion vector of correspondence image block, the first reference picture list of described correspondence image is belonged to the image of the motion vector points making described correspondence image block, if the reference picture of described current image block comes from the second reference picture list of the affiliated image of described current image block, then determine the motion vector of correspondence image block, the second reference picture list of described correspondence image is belonged to the image of the motion vector points making described correspondence image block, or

Basic apparent time is considered as belonging to described correspondence image, if the reference picture of described current image block comes from the first reference picture list of the affiliated image of described current image block, then determine the motion vector of correspondence image block, the first reference picture list of described correspondence image is belonged to the image of the motion vector points making described correspondence image block, if the reference picture of described current image block comes from the second reference picture list of the affiliated image of described current image block, then determine the motion vector of correspondence image block, the second reference picture list of described correspondence image is belonged to the image of the motion vector points making described correspondence image block.

11. 1 kinds of methods determining time domain motion vector predictor, it is characterized in that, described method comprises:

Determine reference picture and the correspondence image of current image block, wherein, the affiliated image of described current image block is bidirectional predictive picture, and described correspondence image is bidirectional predictive picture;

According to the image information of described correspondence image, determine the motion vector of described correspondence image block, described image information comprises following arbitrary information: the image sequence numbering POC relation between image type and the affiliated image of described current block, layer belonging in hierarchical coding or look belonging to looking in coding more, described image type is divided into long-term type and short-term type, described POC relation is divided into POC identical different with POC, described belonging to layer be divided into Primary layer and enhancement layer, belonging to described depending on be divided into substantially depending on and dependence look;

12. methods according to claim 11, is characterized in that, the described image information according to described correspondence image, determine the motion vector of described correspondence image block, specifically comprise:

When belonging to described correspondence image, layer is Primary layer, if the reference picture of described current image block comes from the first reference picture list of the affiliated image of described current image block, then determine the motion vector points of correspondence image block, the first reference picture list of described correspondence image is belonged to the image of the motion vector making described correspondence image block, if the reference picture of described current image block comes from the second reference picture list of the affiliated image of described current image block, then determine the motion vector of correspondence image block, the second reference picture list of described correspondence image is belonged to the image of the motion vector points making described correspondence image block, or

13. 1 kinds of devices determining time domain motion vector predictor, it is characterized in that, described device comprises:

Determining unit, for the image information of the reference picture according to current image block, from image collection, determine the correspondence image of described current image block, wherein, described image information comprises following arbitrary information: image type, and the image sequence numbering POC relation belonging to described current block between image, layer belonging in hierarchical coding or look belonging to looking in coding more, described image type is divided into long-term type and short-term type, described POC relation is divided into POC identical different with POC, belonging to described, layer is divided into Primary layer and enhancement layer, belonging to described depending on be divided into substantially depending on and dependence look, or

For the image information of the correspondence image according to current image block, from image collection, determine the reference picture of described current image block, wherein, described image information comprises following arbitrary information: image type, and the image sequence numbering POC relation belonging to described current block between image, layer belonging to image or look belonging to looking in coding in hierarchical coding more, described image type is divided into long-term type and short-term type, described POC relation is divided into POC identical different with POC, belonging to described, layer is divided into Primary layer and enhancement layer, belonging to described depending on be divided into substantially depending on and dependence look,

Processing unit, for determining the correspondence image block of described current image block in described correspondence image;

For according to described reference picture and described correspondence image block, determine the time domain motion vector predictor of described current image block.

14. devices according to claim 13, is characterized in that, described current image block relies on view picture, and described image collection comprises with described dependence depending on the corresponding image substantially looked, or

15. devices according to claim 13 or 14, it is characterized in that, described determining unit is specifically for the image type of the reference picture according to current image block, from described image collection, determine the correspondence image of described current image block, to make the image type of the image type of described correspondence image and described reference picture different; Or

For the POC relation between image belonging to the reference picture according to current image block and described current block, from described image collection, determine the correspondence image of described current image block, with make described correspondence image and described current block belonging to POC relation between image and described reference picture and described current block belonging to POC relation between image different; Or

For layer belonging to the reference picture of current image block, from described image collection, determine the correspondence image of described current image block, to make layer belonging to layer belonging to described correspondence image and described reference picture different; Or

For looking belonging to the reference picture of current image block, from described image collection, determine the correspondence image of described current image block, with make belonging to described correspondence image depending on look belonging to described reference picture different.

16. devices according to claim 15, is characterized in that, described image collection comprises at least two the first alternative images, wherein, the type of described first alternative image and the image type of described reference picture different, or

Described determining unit, specifically for the image information according to described reference picture, from described at least two the first alternative images, determines the image that call number in described image collection is minimum, as the correspondence image of described current image block.

17. devices according to claim 15, is characterized in that, described image collection comprises at least one second alternative image and at least one the 3rd alternative image, and wherein, the image type of described second alternative image and described 3rd alternative image is different, or

Described determining unit is also for from described image collection, determine predicted picture, described predicted picture comprises a second alternative image and a 3rd alternative image, and described predicted picture is for determining the correspondence image of each image block in band residing for described current image block;

For from described predicted picture, determine the correspondence image of described current image block.

18. devices according to claim 17, is characterized in that, described image collection comprises at least two the second alternative images, and/or

Described determining unit, specifically for from described image collection, determines predicted picture, the image that the call number at least two the second alternative images described in described predicted picture comprises in described image collection is minimum; And/or

For from described image collection, determine predicted picture, the image that the call number at least two the 3rd alternative images described in described predicted picture comprises in described image collection is minimum.

19. devices according to claim 15, is characterized in that, described determining unit, specifically for from described image collection, determines target image, as the correspondence image of each image block in band residing for described current image block;

For the image type of the correspondence image according to current image block, from described image collection, determine the reference picture of described current image block, to make the image type of the image type of described reference picture and described correspondence image different; Or

For the POC relation between image belonging to the correspondence image according to current image block and described current block, from described image collection, determine the reference picture of described current image block, with make described reference picture and described current block belonging to POC relation between image and described correspondence image and described current block belonging to POC relation between image different; Or

For layer belonging to the correspondence image of current image block, from described image collection, determine the reference picture of described current image block, to make layer belonging to layer belonging to described reference picture and described correspondence image different; Or

For looking belonging to the correspondence image of current image block, from described image collection, determine the reference picture of described current image block, with make belonging to described reference picture depending on look belonging to described correspondence image different.

20. devices according to claim 19, is characterized in that, described image collection comprises at least two the 4th alternative images, wherein, the type of described 4th alternative image and the image type of described reference picture different, or

Described 4th alternative image and POC relation between the affiliated image of described current block, and described reference picture and described current block belonging to POC relation between image different, or

Described determining unit, specifically for the image information according to described correspondence image, from described at least two the 4th alternative images, determines the image that call number in described image collection is minimum, as the reference picture of described current image block.

21. devices according to claim 13 or 14, it is characterized in that, the affiliated image of described current image block is bidirectional predictive picture, and described correspondence image is bidirectional predictive picture, and

Described processing unit, specifically for the image information according to described correspondence image, determines the motion vector of described correspondence image block;

For the motion vector according to described reference picture and described correspondence image block, determine the time domain motion vector predictor of described current image block.

22. devices according to claim 21, it is characterized in that, described processing unit is specifically for when the image type of described correspondence image is long-term type, if the reference picture of described current image block comes from the first reference picture list of the affiliated image of described current image block, then determine the motion vector of correspondence image block, the first reference picture list of described correspondence image is belonged to the image of the motion vector points making described correspondence image block, if the reference picture of described current image block comes from the second reference picture list of the affiliated image of described current image block, then determine the motion vector of correspondence image block, the second reference picture list of described correspondence image is belonged to the image of the motion vector points making described correspondence image block, or

For when the POC of described correspondence image is with when belonging to described current image block, the POC of image is identical, if the reference picture of described current image block comes from the first reference picture list of the affiliated image of described current image block, then determine the motion vector of correspondence image block, the first reference picture list of described correspondence image is belonged to the image of the motion vector points making described correspondence image block, if the reference picture of described current image block comes from the second reference picture list of the affiliated image of described current image block, then determine the motion vector of correspondence image block, the second reference picture list of described correspondence image is belonged to the image of the motion vector points making described correspondence image block, or

For when belonging to described correspondence image, layer is Primary layer, if the reference picture of described current image block comes from the first reference picture list of the affiliated image of described current image block, then determine the motion vector of correspondence image block, the image belonging to described correspondence image with the image of the motion vector points making described correspondence image block belongs to the first reference picture list, if the reference picture of described current image block comes from the second reference picture list of the affiliated image of described current image block, then determine the motion vector of correspondence image block, the second reference picture list of described correspondence image is belonged to the image of the motion vector points making described correspondence image block, or

For being considered as basic apparent time belonging to described correspondence image, if the reference picture of described current image block comes from the first reference picture list of the affiliated image of described current image block, then determine the motion vector of correspondence image block, the first reference picture list is belonged to the image of the described correspondence image making the motion vector points of described correspondence image block, if the reference picture of described current image block comes from the second reference picture list of the affiliated image of described current image block, then determine the motion vector of correspondence image block, the second reference picture list of described correspondence image is belonged to the image of the motion vector points making described correspondence image block.

23. 1 kinds of devices determining time domain motion vector predictor, it is characterized in that, described device comprises:

Determining unit, for determining reference picture and the correspondence image of current image block, wherein, the affiliated image of described current image block is bidirectional predictive picture, and described correspondence image is bidirectional predictive picture;

For determining the correspondence image block of described current image block in described correspondence image;

Processing unit, for the image information according to described correspondence image, determine the motion vector of described correspondence image block, described image information comprises following arbitrary information: the image sequence numbering POC relation between image type and the affiliated image of described current block, layer belonging in hierarchical coding or look belonging to looking in coding more, described image type is divided into long-term type and short-term type, described POC relation is divided into POC identical different with POC, described belonging to layer be divided into Primary layer and enhancement layer, belonging to described depending on be divided into substantially depending on and dependence look;

24. devices according to claim 23, it is characterized in that, described processing unit is specifically for when the image type of described correspondence image is long-term type, if the reference picture of described current image block comes from the first reference picture list of the affiliated image of described current image block, then determine the motion vector of correspondence image block, the first reference picture list of described correspondence image is belonged to the image of the motion vector points making described correspondence image block, if the reference picture of described current image block comes from the second reference picture list of the affiliated image of described current image block, then determine the motion vector of correspondence image block, the second reference picture list of described correspondence image is belonged to the image of the motion vector points making described correspondence image block, or