CN107888917A - A kind of image coding/decoding method and device - Google Patents

A kind of image coding/decoding method and device Download PDF

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Publication number
CN107888917A
CN107888917A CN201711213876.4A CN201711213876A CN107888917A CN 107888917 A CN107888917 A CN 107888917A CN 201711213876 A CN201711213876 A CN 201711213876A CN 107888917 A CN107888917 A CN 107888917A
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image
coding parameter
supplemental characteristic
collection
coding
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CN107888917B (en
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朱洪波
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Beijing QIYI Century Science and Technology Co Ltd
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Beijing QIYI Century Science and Technology Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/169—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding
    • H04N19/17—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/134—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or criterion affecting or controlling the adaptive coding
    • H04N19/162—User input
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/44—Decoders specially adapted therefor, e.g. video decoders which are asymmetric with respect to the encoder
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/46—Embedding additional information in the video signal during the compression process
    • H04N19/463—Embedding additional information in the video signal during the compression process by compressing encoding parameters before transmission

Abstract

The present invention provides a kind of image coding/decoding method and device, including：Image to be encoded is obtained, and the image to be encoded is divided at least two image-regions；The coding parameter collection for meeting the coding requirement that user pre-sets is set for each image-region；According to each self-corresponding coding parameter collection of each image-region, each image-region is encoded, obtains the view data of each image-region；Each coding parameter collection is encoded, obtains each self-corresponding supplemental characteristic of each coding parameter collection；The view data of each image-region and each supplemental characteristic are carried in the code stream of image to be encoded, send the code stream for the image to be encoded for carrying view data and supplemental characteristic, so as to be embodied as the coding parameter collection that the setting of any one image-region meets this image-region so that the coding of each image-region can meet the coding requirement that user pre-sets.

Description

A kind of image coding/decoding method and device
Technical field
The invention belongs to technical field of image processing, more specifically, more particularly to a kind of image coding/decoding method and dress Put.
Background technology
In current method for encoding images, encoder can divide an image into multiple bands according to coded sequence (slice), wherein which kind of coded sequence instruction encoder sequentially encoded to each pixel in image using, such as coded sequence Can be order from left to right, from top to bottom, encoder sequentially divides an image into multiple bands shown in Fig. 1 according to this.
And in the image based on discrete cosine transform (DCT, Discrete Cosine Transform) hybrid predicting base In coding method, encoder defines coding of multiple coding parameters for image to be encoded, as encoder can define：Image Type of coding, reference chart image set, interpolation filter, block elimination effect filter parameter, quantization parameter and adaptive loop filter ginseng Number etc., so after image to be encoded is received, encoder can choose the coding of image to be encoded from multiple coding parameters Parameter, and all image-regions for treating according to the coding parameter of selection coded image are encoded.
The content of the invention
In view of this, it is an object of the invention to provide a kind of image coding/decoding method and device, for for each image Region sets the coding parameter collection for meeting the coding requirement that user pre-sets, so that the coding of each image-region meets user The coding requirement pre-set.Technical scheme is as follows：
The present invention provides a kind of method for encoding images, and methods described includes：
Image to be encoded is obtained, and the image to be encoded is divided at least two image-regions；
The coding parameter collection for meeting the coding requirement that user pre-sets is set for each image-region；
According to each self-corresponding coding parameter collection of each image-region, each image-region is encoded, obtained each The view data of image-region；
Each coding parameter collection is encoded, obtains each self-corresponding supplemental characteristic of each coding parameter collection；
The view data of each image-region and each supplemental characteristic are carried in the code stream of image to be encoded；
Send the code stream for the image to be encoded for carrying view data and supplemental characteristic.
Preferably, methods described also includes：The partitioning parameters of every cut-off rule are obtained, wherein the cut-off rule is used to treat Coded image carries out region division；
The partitioning parameters of every cut-off rule are encoded, obtain the coded data of every cut-off rule；
The coded data of every cut-off rule is carried in the image to be encoded for carrying view data and supplemental characteristic Code stream in.
Preferably, it is described that the image to be encoded is divided at least two image-regions, including：
Using the cut-off rule parallel with each axle of coordinate system, the image to be encoded is divided at least two and is shaped as The image-region of rectangle；Wherein, the cut-off rule parallel with any one axle of coordinate system is separated from each other, and any with coordinate system The parallel cut-off rule of one axle runs through the Zone Full of the image to be encoded, the dimension of the coordinate system and the figure to be encoded The dimension of picture is identical, and an axle of the coordinate system is parallel with a side of the image to be encoded.
Preferably, the supplemental characteristic and the coded data carry the image head text in the code stream of the image to be encoded In part, wherein the supplemental characteristic is used to obtain the decoding parametric collection needed for described image regional decoding, the coded data is used In the cut-off rule for obtaining dividing described image region.
Preferably, it is described that each coding parameter collection is encoded, obtain each self-corresponding parameter of each coding parameter collection Data, including：
All coding parameters are concentrated with any one coding parameter collection：It is determined that each coding included with the coding parameter collection At least one coding parameter in the coding parameter collection of parameter all same and each coding parameter included with the coding parameter collection Different coding parameter collection；
The coding parameter collection of the coding parameter collection and each coding parameter all same included with the coding parameter collection is true It is set to first kind coding parameter collection, at least one coding parameter in each coding parameter that will include with the coding parameter collection is not Same coding parameter collection is defined as the second class coding parameter collection；
Concentrated from all first kind coding parameters and obtain any one first kind coding parameter collection, to the acquired first kind Coding parameter collection is encoded, and obtains the supplemental characteristic of acquired first kind coding parameter collection, and by the acquired first kind The supplemental characteristic of coding parameter collection concentrates the supplemental characteristic of other first kind coding parameter collection as all first kind coding parameters；
I-th of second class coding parameter collection that all second class coding parameters are concentrated are obtained, i-th of second classes are compiled Code parameter set is encoded, and obtains the supplemental characteristic of i-th of second class coding parameter collection, and according to described i-th second Supplemental characteristic prediction i+1 the second class coding parameter collection to n-th the second class coding parameter of class coding parameter collection is concentrated to The supplemental characteristic of a few second class coding parameter collection, wherein i be from 1 to N-1 in any one natural number, N is all the The sum of two class coding parameter collection.
The present invention also provides a kind of picture decoding method, and methods described includes：
Image to be decoded is obtained, and the image to be decoded is divided at least two image-regions；
Each self-corresponding supplemental characteristic of each image-region is obtained, and each supplemental characteristic is decoded, is obtained Each self-corresponding decoding parametric collection for meeting the decoding request that user pre-sets of each image-region；
According to each self-corresponding decoding parametric collection for meeting the decoding request that user pre-sets of each image-region, to every Individual image-region is decoded.
Preferably, it is described that the image to be decoded is divided at least two image-regions, including：From the figure to be decoded Each self-corresponding coded data of every cut-off rule is obtained in the code stream of picture；
Self-corresponding coded data each to every cut-off rule decodes, and obtains the partitioning parameters of every cut-off rule；
Every cut-off rule is drawn according to the partitioning parameters of every cut-off rule, is treated using every cut-off rule by described Decoding image is divided at least two image-regions.
Preferably, the coded data and the supplemental characteristic carry the image head text in the code stream of the image to be decoded In part.
Preferably, it is described that each supplemental characteristic is decoded, obtain each self-corresponding decoding of each image-region Parameter set, including：
To any one supplemental characteristic in all supplemental characteristics：It is determined that with the supplemental characteristic identical supplemental characteristic and with The different supplemental characteristic of the supplemental characteristic；
It is defined as first kind supplemental characteristic by the supplemental characteristic and with the supplemental characteristic identical supplemental characteristic, and will be with this The different supplemental characteristic of supplemental characteristic is defined as the second class supplemental characteristic；
Any one first kind supplemental characteristic is obtained from all first kind supplemental characteristics, to acquired first kind parameter Data are decoded, and obtain the decoding parametric collection of acquired first kind supplemental characteristic, and by acquired first kind parameter number According to decoding parametric collection of the decoding parametric collection as other first kind supplemental characteristics in all first kind supplemental characteristics；
I-th of second class supplemental characteristics are obtained from all second class supplemental characteristics, to i-th of second class parameter numbers According to being decoded, the decoding parametric collection of i-th of second class supplemental characteristics is obtained, and according to i-th of second class parameters The solution of decoding parametric collection prediction i+1 at least one second class supplemental characteristic into n-th the second class supplemental characteristic of data Code parameter set, wherein i be from 1 to N-1 in any one natural number, N be all second class supplemental characteristics sum.
The present invention also provides a kind of picture coding device, and described device includes：
Acquiring unit, for obtaining image to be encoded；
Division unit, for the image to be encoded to be divided into at least two image-regions；
Setting unit, the coding parameter for the coding requirement that user pre-sets is met for being set for each image-region Collection；
Coding unit, for according to each self-corresponding coding parameter collection of each image-region, being carried out to each image-region Coding, obtains the view data of each image-region, and for being encoded to each coding parameter collection, obtain each coding Each self-corresponding supplemental characteristic of parameter set；
Encapsulation unit, for the view data of each image-region and each supplemental characteristic to be carried in figure to be encoded In the code stream of picture；
Transmitting element, for sending the code stream for the image to be encoded for carrying view data and supplemental characteristic.
Preferably, the acquiring unit, it is additionally operable to obtain the partitioning parameters of every cut-off rule, wherein the cut-off rule is used for Treat coded image and carry out region division；
The coding unit, it is additionally operable to encode the partitioning parameters of every cut-off rule, obtains the volume of every cut-off rule Code data；
The encapsulation unit, it is additionally operable to the coded data carrying of every cut-off rule carrying view data and ginseng described In the code stream of the image to be encoded of number data.
Preferably, the division unit, specifically for using the cut-off rule parallel with each axle of coordinate system, treated described Coded image is divided at least two image-regions for being shaped as rectangle；Wherein, point parallel with any one axle of coordinate system Secant is separated from each other, and the cut-off rule parallel with any one axle of coordinate system runs through the Zone Full of the image to be encoded, The dimension of the coordinate system is identical with the dimension of the image to be encoded, an axle and the image to be encoded of the coordinate system A side it is parallel.
Preferably, the supplemental characteristic and the coded data carry the image head text in the code stream of the image to be encoded In part, wherein the supplemental characteristic is used to obtain the decoding parametric collection needed for described image regional decoding, the coded data is used In the cut-off rule for obtaining dividing described image region.
Preferably, the coding unit, specifically for all coding parameters are concentrated with any one coding parameter collection：It is determined that The coding parameter collection of each coding parameter all same included with the coding parameter collection and include with the coding parameter collection each The different coding parameter collection of at least one coding parameter in coding parameter, and by the coding parameter collection and with the coding parameter collection Including the coding parameter collection of each coding parameter all same be defined as first kind coding parameter collection, will be with coding parameter Ji Bao The different coding parameter collection of at least one coding parameter in each coding parameter included is defined as the second class coding parameter collection；
And concentrated from all first kind coding parameters and obtain any one first kind coding parameter collection, to acquired the A kind of coding parameter collection is encoded, and obtains the supplemental characteristic of acquired first kind coding parameter collection, and by acquired the The supplemental characteristic of a kind of coding parameter collection concentrates the parameter of other first kind coding parameter collection as all first kind coding parameters Data；I-th of second class coding parameter collection that all second class coding parameters are concentrated are obtained, i-th of second classes are encoded Parameter set is encoded, and obtains the supplemental characteristic of i-th of second class coding parameter collection, and according to i-th of second classes Supplemental characteristic prediction the second class coding parameter collection of i+1 to the second class of n-th coding parameter of coding parameter collection is concentrated at least The supplemental characteristic of one the second class coding parameter collection, wherein i be from 1 to N-1 in any one natural number, N be all second The sum of class coding parameter collection.
The present invention also provides a kind of picture decoding apparatus, and described device includes：
Acquiring unit, for obtaining image to be decoded；
Division unit, for the image to be decoded to be divided into at least two image-regions；
The acquiring unit, it is additionally operable to obtain each self-corresponding supplemental characteristic of each image-region；
Decoding unit, for being decoded to each supplemental characteristic, obtain each self-corresponding symbol of each image-region Share the decoding parametric collection for the decoding request that family is pre-set, and each self-corresponding to meet user advance according to each image-region The decoding parametric collection of the decoding request of setting, is decoded to each image-region.
Preferably, the acquiring unit, it is additionally operable to obtain every cut-off rule each from the code stream of the image to be decoded Corresponding coded data；
The decoding unit, it is additionally operable to self-corresponding coded data each to every cut-off rule and decodes, obtains every point The partitioning parameters of secant；
The division unit, every cut-off rule is drawn specifically for the partitioning parameters according to every cut-off rule, is used The image to be decoded is divided at least two image-regions by every cut-off rule.
Preferably, the coded data and the supplemental characteristic carry the image head text in the code stream of the image to be decoded In part.
Preferably, the decoding unit, specifically for any one supplemental characteristic in all supplemental characteristics：It is determined that with The supplemental characteristic identical supplemental characteristic and the supplemental characteristic different from the supplemental characteristic, and by the supplemental characteristic and with the parameter Data identical supplemental characteristic is defined as first kind supplemental characteristic, and the supplemental characteristic different from the supplemental characteristic is defined as into Two class supplemental characteristics；
And any one first kind supplemental characteristic is obtained from all first kind supplemental characteristics, to the acquired first kind Supplemental characteristic is decoded, and obtains the decoding parametric collection of acquired first kind supplemental characteristic, and the acquired first kind is joined Decoding parametric collection of the decoding parametric collection of number data as other first kind supplemental characteristics in all first kind supplemental characteristics；From institute Have and i-th of second class supplemental characteristics obtained in the second class supplemental characteristic, i-th of second class supplemental characteristics are decoded, The decoding parametric collection of i-th of second class supplemental characteristics is obtained, and is joined according to the decoding of i-th of second class supplemental characteristics The decoding parametric collection of manifold prediction i+1 at least one second class supplemental characteristic into n-th the second class supplemental characteristic, wherein I be from 1 to N-1 in any one natural number, N be all second class supplemental characteristics sum.
The present invention also provides a kind of image encoder, and computer program, described image are stored with described image encoder Encoder realizes above-mentioned method for encoding images when running the computer program.
The present invention also provides a kind of storage medium, and computer program, the computer journey are stored with the storage medium Above-mentioned method for encoding images is performed during sort run.
The present invention also provides a kind of image decoder, and computer program, described image are stored with described image decoder Decoder realizes above-mentioned picture decoding method when running the computer program.
The present invention also provides a kind of storage medium, and computer program, the computer journey are stored with the storage medium Above-mentioned picture decoding method is performed during sort run.
Compared with prior art, above-mentioned technical proposal provided by the invention has the following advantages that：
Can be each figure after image to be encoded is divided into at least two image-regions by above-mentioned technical proposal As region set meet user preset setting coding requirement coding parameter collection, according to each self-corresponding volume of each image-region Code parameter set, is encoded to each image-region, meets this image-region so as to be embodied as the setting of any one image-region Coding parameter collection so that the coding of each image-region can meet the coding requirement that each self-corresponding user pre-sets.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are the present invention Some embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, can also basis These accompanying drawings obtain other accompanying drawings.
Fig. 1 is the schematic diagram that conventional images are divided into multi-ribbon；
Fig. 2 is a kind of flow chart of method for encoding images provided in an embodiment of the present invention；
Fig. 3 is the flow chart of another method for encoding images provided in an embodiment of the present invention；
Fig. 4 is the schematic diagram of image division provided in an embodiment of the present invention；
Fig. 5 is the flow chart of picture decoding method provided in an embodiment of the present invention；
Fig. 6 is the structural representation of picture coding device provided in an embodiment of the present invention；
Fig. 7 is the structural representation of picture decoding apparatus provided in an embodiment of the present invention.
Embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing, to the technology of the present invention Scheme is clearly and completely described, it is clear that and described embodiment is part of the embodiment of the present invention, rather than whole Embodiment.Based on the embodiment in the present invention, those of ordinary skill in the art are obtained under the premise of creative work is not made The every other embodiment obtained, belongs to the scope of protection of the invention.
Referring to Fig. 2, it illustrates a kind of flow chart of method for encoding images provided by the invention, the method for encoding images It can be performed, comprised the following steps by encoder, server or computer equipment：
S201：Image to be encoded is obtained, and image to be encoded is divided at least two image-regions.It is appreciated that It is：After any one sub-picture is got, any one sub-picture can be considered as image to be encoded, and be divided at least two Individual image-region, as mode shown in Fig. 1 can be used, according to coded sequence from left to right, from top to bottom by image to be encoded It is divided into multiple bands.That is, conventional images dividing mode can be used to obtain in some embodiments of the invention Any one sub-picture got, is divided into multiple images region.
S202：The coding parameter collection for meeting the coding requirement that user pre-sets is set for each image-region.
In the prior art, although image to be encoded is divided into multiple bands, (each band can be considered as an image Region), but setting coding parameter to concentrate for image to be encoded, it is completely different that it does not consider that different image-regions also has Statistical nature, therefore in the prior art only on the basis of the statistical nature of whole sub-picture, meet user for its setting and set in advance The coding parameter collection for the coding requirement put, the coding of partial image region is caused not meet the coding requirement that user pre-sets.
It is that this is of the invention on the basis of each image-region, the statistical nature of each image-region is considered, for each figure As region sets the respective coding parameter collection for meeting the coding requirement that user pre-sets.For example the present invention is previously provided with image Type of coding, reference chart image set, interpolation filter, block elimination effect filter parameter, quantization parameter and adaptive loop filter ginseng The coding parameters such as number, it is that each image-region chooses the volume for meeting the coding requirement that user pre-sets from these coding parameters Code parameter, then coding parameter that the coding parameter of selection is stored in image-region are concentrated.
The coding requirement that wherein user pre-sets be user set its wish the target reached, as user pre-sets Coding requirement can be code rate and/or coding quality etc., for setting which kind of coding requirement according to practical application scene Depending on.In some embodiments of the invention, the coding parameter that each image-region is set concentrates coding parameter to include but unlimited In following coding parameters：
(1), picture coding type, such as I frames, P frames or B frames；
(2) if, picture coding type be P frames or B frames, coding parameter collection also include reference chart image set and it is optional plus Weigh Prediction Parameters；
(3) if, picture coding type be P frames or B frames, coding parameter collection also includes adaptive interpolation filters parameter；
(4), quantization parameter, such as self-defined quantization matrix；
(5), block elimination effect filter parameter；
(6), auto-adaptive loop filter parameter；
(7), opening and closing of some tool sets etc., such as whether some coding tools is enabled, such as smooth tool in adaptive frame Instrument etc. is skipped with conversion.
S203：According to each self-corresponding coding parameter collection of each image-region, each image-region is encoded, obtained The view data of each image-region.
That is, the coding parameter included according to each self-corresponding coding parameter collection of each image-region, to each figure As region is encoded.When being encoded to each image-region, any one coded sequence can be used, as described above from a left side To the right side, coded sequence from top to bottom encodes to image-region, or in units of each image-region, respectively to every Individual image-region is encoded, and the 2nd image-region can such as be encoded after being encoded to the 1st image-region, with It is such to be pushed into last image-region, or in units of every row or each column, every row or each column are encoded respectively.
And when being encoded to image-region, the encryption algorithms such as interframe encode or intraframe coding can be used, for Which kind of specifically using coded sequence or encryption algorithm depending on practical application scene, this present invention is not limited.
S204：Each coding parameter collection is encoded, obtains each self-corresponding supplemental characteristic of each coding parameter collection. In some embodiments of the present invention, it is referred to existing encryption algorithm and each coding parameter that coding parameter is concentrated is compiled Code, obtains the supplemental characteristic of coding parameter collection.
In some embodiments of the invention, the coding parameter that includes can also be concentrated according to coding parameter come determine how Coding parameter collection is encoded, such as all coding parameters are concentrated with any one coding parameter collection：It is determined that with the coding parameter In the coding parameter collection for each coding parameter all same that collection includes and each coding parameter included with the coding parameter collection The different coding parameter collection of at least one coding parameter, and each volume that the coding parameter sets and the coding parameter collection are included The coding parameter collection of code parameter all same is defined as first kind coding parameter collection, each coding that will include with the coding parameter collection The different coding parameter collection of at least one coding parameter in parameter is defined as the second class coding parameter collection.
For all first kind coding parameter collection：Concentrated from all first kind coding parameters and obtain any one first kind Coding parameter collection, acquired first kind coding parameter collection is encoded, obtain acquired first kind coding parameter collection Supplemental characteristic, and the supplemental characteristic of acquired first kind coding parameter collection is concentrated other as all first kind coding parameters The supplemental characteristic of first kind coding parameter collection.
For all second class coding parameter collection：I-th of second classes that all second class coding parameters are concentrated are obtained to compile I-th of second class coding parameter collection are encoded, obtain the supplemental characteristic of i-th of second class coding parameter collection by code parameter set, And predict the second class coding parameter collection of i+1 to the class of n-th second according to the supplemental characteristic of i-th of second class coding parameter collection Coding parameter concentrates the supplemental characteristic of at least one second class coding parameter collection, wherein i be from 1 to N-1 in any one from So number, N are the sum of all second class coding parameter collection.
Such as image to be encoded is divided into five image-regions, is respectively：Image-region 1, image-region 2, image district Domain 3, image-region 4 and image-region 5, each self-corresponding coding requirement for meeting user and pre-setting of this five image-regions Coding parameter collection is designated as：Coding parameter collection 1, coding parameter collection 2, coding parameter collection 3, coding parameter collection 4 and coding parameter collection 5. The coding parameter that wherein coding parameter collection 1 includes is { coding parameter 1, coding parameter 2, coding parameter 3 }, corresponding residue four The coding parameter that individual coding parameter collection includes is followed successively by：Coding parameter collection 2：{ coding parameter 1, coding parameter 2, coding parameter 3 }, Coding parameter collection 3：{ coding parameter 1, coding parameter 2, coding parameter 4 }, coding parameter collection 4：Coding parameter 1, coding parameter 3, Coding parameter 4 } and coding parameter collection 5：{ coding parameter 1, coding parameter 4, coding parameter 5 }.
Can as the basic parameter collection for determining first kind coding parameter collection and the second class coding parameter collection using coding parameter collection 1 Know, each coding parameter in coding parameter collection 2 is identical with each coding parameter in coding parameter collection 1, and coding parameter collection 3rd, have that at least one coding parameter is different from the coding parameter in coding parameter collection 1 in coding parameter collection 4 and coding parameter collection 5, Therefore coding parameter collection 1 and coding parameter collection 2 can be considered as first kind coding parameter collection, by coding parameter collection 3, coding parameter Collection 4 and coding parameter collection 5 are considered as the second class coding parameter collection.
, can be to coding parameter collection 1 for coding parameter collection 1 and coding parameter collection 2 the two first kind coding parameter collection Encoded, obtain the supplemental characteristic of coding parameter collection 1, then using the supplemental characteristic of coding parameter collection 1 as coding parameter collection 2 Supplemental characteristic.
And for coding parameter collection 3, coding parameter collection 4 and coding parameter collection 5 these three second class coding parameter collection, Coding parameter collection 3 is encoded, obtains the supplemental characteristic of coding parameter collection 3, then according to the supplemental characteristic of coding parameter collection 3 The supplemental characteristic of predictive coding parameter set 4 and coding parameter collection 5；Certainly coding parameter collection 3 and coding parameter collection 4 can also be entered Row coding, obtains each self-corresponding supplemental characteristic, then further according to the supplemental characteristic predictive coding parameter set 5 of coding parameter collection 4 Supplemental characteristic.
It was found from the coded system of above-mentioned coding parameter collection, coding number can be reduced by above-mentioned coded system, especially It is only to need to encode a first kind coding parameter collection for first kind coding parameter collection, and then can carries High parameter data acquisition efficiency.Herein it should be noted that：Obtain in all first kind coding parameter collection any one the A kind of coding parameter collection and i-th of second class coding parameter collection of all second class coding parameters concentration acquisition can be：According to Coding parameter collection corresponding to first image-region being encoded of coded sequence of selection.
S205：The view data of each image-region and each supplemental characteristic are carried in the code stream of image to be encoded.
The feasible pattern that wherein image to be encoded carries supplemental characteristic is：Supplemental characteristic is carried into the code in image to be encoded In the image header file of stream, its carrying mode can be：The supplemental characteristic of each coding parameter collection is written to code stream successively In the image header file of the code stream of image to be encoded, or the supplemental characteristic of each coding parameter collection is written to each self-corresponding Before the view data of image-region.
S206：Send the code stream for the image to be encoded for carrying view data and supplemental characteristic.
Can be each figure after image to be encoded is divided into at least two image-regions by above-mentioned technical proposal Meet the coding parameter collection of the coding requirement that user pre-sets as region is set, according to each self-corresponding volume of each image-region Code parameter set, is encoded to each image-region, meets this image-region so as to be embodied as the setting of any one image-region Coding parameter collection so that the coding of each image-region can meet the coding requirement that each self-corresponding user pre-sets.
Conventional images dividing mode is not limited in some embodiments of the invention to divide image to be encoded, such as Fig. 3 institutes Show, it illustrates the flow chart of another method for encoding images provided by the invention, show the image different from prior art Dividing mode, it may comprise steps of：
S301：Obtain image to be encoded.
S302：Cut-off rule in coordinate system, image to be encoded is divided into multiple images region.Such as can be according to seat Cut-off rule of different shapes in mark system, the straight line such as curve, parallel with the reference axis of coordinate system, image to be encoded is divided into With different shape, such as circular, image-region of rectangle.Wherein, the dimension of coordinate system is equal to or more than image to be encoded Dimension, when such as the dimension of image to be encoded is two-dimentional, then the dimension of coordinate system can be two-dimentional or three-dimensional, and for example figure to be encoded When the dimension of picture is three-dimensional, then the dimension of coordinate system can be more than three-dimensional or three-dimensional.
In some embodiments of the invention, after image to be encoded is got, one is built according to image to be encoded Coordinate system, the dimension of constructed coordinate system is identical with the dimension of image to be encoded, and an axle of coordinate system and figure to be encoded One side of picture is parallel, as shown in Figure 4.Image to be encoded is a two dimensional image, by two adjacent edge extensions in two dimensional image And coordinate system is obtained, using the cut-off rule parallel with each axle of coordinate system, image to be encoded is divided at least two shapes For the image-region of rectangle, wherein the cut-off rule parallel with any one axle of coordinate system is separated from each other, and appoint with coordinate system The parallel cut-off rule of an axle of anticipating runs through the Zone Full of the image to be encoded, with realize image to be encoded is divided into it is multiple Image-region.
S303：Obtain the partitioning parameters of every cut-off rule.
In embodiments of the present invention, the partitioning parameters of every cut-off rule can be every cut-off rule each in a coordinate system Coordinate.Such as when the dimension of coordinate system is identical with the dimension of image to be encoded, image-region be by with it is each in coordinate system When the parallel cut-off rule of axle is split to obtain, the coordinate of acquired cut-off rule is：Cut-off rule is not parallel each in a coordinate system Coordinate in axle.Still exemplified by shown in Fig. 4, pass through two vertical dividers parallel with the y-axis of coordinate system and one and coordinate The parallel horizontal division line of the x-axis of system, six image-regions are divided into by image to be encoded, then are come for two vertical dividers To say, the coordinate of acquisition is the coordinate in x-axis, is designated as x0 and x1 respectively, for a horizontal division line, the coordinate of acquisition It is the coordinate in y-axis, is designated as y0.
If treating coded image using every cut-off rule to be evenly dividing, the partitioning parameters of every cut-off rule can be Bar number of the cut-off rule in all cut-off rules, the bar number are used to indicate cut-off rule is which bar segmentation in all cut-off rules Line.
S304：The partitioning parameters coordinate of every cut-off rule is encoded, obtains the coded data of every cut-off rule.
Such as when the partitioning parameters of every cut-off rule are each self-corresponding each coordinates of every cut-off rule, then can be to every Each self-corresponding each coordinate of bar cut-off rule is encoded, and obtains the coded number of each self-corresponding each coordinate of every cut-off rule According to.Such as above three coordinate x0, x1 and y0 are encoded, obtain the respective coded data of these three coordinates.Again such as every When the partitioning parameters of bar cut-off rule are bar number of the every cut-off rule in all cut-off rules, then the bar number of cut-off rule can be carried out Coding, obtains the coded data of bar number.
S305：The coding parameter collection for meeting the coding requirement that user pre-sets is set for each image-region.
S306：According to each self-corresponding coding parameter collection of each image-region, each image-region is encoded, obtained The view data of each image-region.
S307：Each coding parameter collection is encoded, obtains each self-corresponding supplemental characteristic of each coding parameter collection.
Herein it should be noted is that：Step S305 to step S307 and above-mentioned steps S202 is to step S204 phases Together, this present invention is no longer illustrated, and above-mentioned steps S303 to step S304 can be suitable with step S305 to step S307 exchanges Sequence, can also parallel execution of steps S303 and step S304, to this present invention no longer illustrate one by one.
S308：The coded data of every cut-off rule, the view data of each image-region and each supplemental characteristic are carried In the code stream of image to be encoded, to cause decoding end to get coded data after the code stream of image to be encoded is received, The partitioning parameters of each bar cut-off rule are obtained after decoding coded data, to draw cut-off rule to divide image.
The code stream of image wherein to be encoded includes image head file and view data, and image header file and view data are in code Order in stream is successively：Image header file and view data, carry in described image header file related to image coding and decoding Parameters, therefore in embodiments of the present invention, coded data and supplemental characteristic can be carried in image header file.
S309：Send the code stream for the image to be encoded for carrying coded data, view data and supplemental characteristic.
By above-mentioned technical proposal, image to be encoded is divided into by multiple images region by the cut-off rule in coordinate system, So that the image-region after division breaks through the limitation of existing this image-region of band, motion vector can be used to image-region Prediction and infra-frame prediction, so as to improve the code efficiency of image to be encoded.
Referring to Fig. 5, it illustrates the flow chart of picture decoding method provided by the invention, the picture decoding method can be with Performed, comprised the following steps by decoder, server or computer equipment：
S501：Image to be decoded is obtained, and image to be decoded is divided at least two image-regions.It is appreciated that It is：After any one sub-picture is got, any one sub-picture can be considered as image to be decoded, and be divided at least one Individual image-region, as mode shown in Fig. 1 can be used, according to coded sequence from left to right, from top to bottom by image to be decoded It is divided into multiple bands.That is, conventional images dividing mode can be used to obtain in some embodiments of the invention Any one sub-picture got, it is divided into multiple bands (band can be considered as an image-region).
In some embodiments of the invention, image to be decoded can also be divided using other modes, so as to obtain Image-region can break through the limitation of this image-region of band, so allow image-region using motion vector prediction and Infra-frame prediction.As improved dividing mode is：Each self-corresponding coding of every cut-off rule is obtained from the code stream of image to be decoded Data, self-corresponding coded data each to every cut-off rule decode, and obtain the respective partitioning parameters of every cut-off rule, use Image to be decoded is divided at least two image-regions by every cut-off rule.
For example each self-corresponding coded data of every cut-off rule is decoded, obtain each comfortable coordinate of every cut-off rule Coordinate in system, every cut-off rule is drawn according to the coordinate of every cut-off rule each in a coordinate system, image to be decoded is drawn It is divided at least two image-regions, the wherein dimension of coordinate system is equal to or more than the dimension of image to be decoded, such as image to be decoded Dimension for it is two-dimentional when, then the dimension of coordinate system can be two dimension or three-dimensional, and for example the dimension of image to be decoded for it is three-dimensional when, Then the dimension of coordinate system can be more than three-dimensional or three-dimensional.
Again for example, self-corresponding coded data each to every cut-off rule decodes, and obtains every cut-off rule at all points Bar number in secant, the bar number is used to indicate that cut-off rule is which bar cut-off rule in all cut-off rules, then according to segmentation The bar number of line draws cut-off rule in image to be decoded, and image uniform to be decoded is divided into at least two image-regions.
In some embodiments of the invention, coded data is carried in the image header file of the code stream of image to be decoded, Therefore coded data can be obtained from the image header file of code stream.After image to be decoded is got, according to figure to be decoded As building a coordinate system, the dimension of constructed coordinate system and the dimension of image to be decoded are identical or different, and coordinate system An axle it is parallel with a side of image to be decoded.
As shown in Fig. 4 in method for encoding images embodiment, image to be decoded is a two dimensional image, by two dimensional image Two adjacent edges extend and obtain coordinate system, to construct the dimension identical coordinate system of a dimension and image to be decoded. Obtained partitioning parameters are coordinate of the every cut-off rule in coordinate system shown in Fig. 4, and figure to be decoded can be run through by being drawn according to coordinate Every cut-off rule of the Zone Full of picture, image to be decoded is divided at least two image-regions.In obtained segmentation ginseng When number is the bar number of every cut-off rule, can in coordinate system shown in Fig. 4 in Zone Full where image to be decoded, according to point The bar number of secant draws cut-off rule so that image uniform to be decoded is divided into at least two image-regions by the cut-off rule.
S502：Each self-corresponding supplemental characteristic of each image-region is obtained, and each supplemental characteristic is decoded, is obtained Each self-corresponding decoding parametric collection for meeting the decoding request that user pre-sets of each image-region.
In some embodiments of the invention, supplemental characteristic is carried in the image header file of the code stream of image to be decoded, Therefore can be from the image header file of code stream come the data that get parms.And the decoding to supplemental characteristic can be through but not limited to Following manner：
First, to any one supplemental characteristic in all supplemental characteristics, it is determined that with the supplemental characteristic identical parameter number Determined according to the supplemental characteristic different with from the supplemental characteristic, and by the supplemental characteristic and with the supplemental characteristic identical supplemental characteristic For first kind supplemental characteristic, the supplemental characteristic different from the supplemental characteristic is defined as the second class supplemental characteristic.
Secondly, for all first kind supplemental characteristics：Obtained from all first kind supplemental characteristics any one A kind of supplemental characteristic, acquired first kind supplemental characteristic is decoded, obtain the solution of acquired first kind supplemental characteristic Code parameter set, and using the decoding parametric collection of acquired first kind supplemental characteristic as other in all first kind supplemental characteristics the The decoding parametric collection of a kind of supplemental characteristic.
And for all second class supplemental characteristics：I-th of second class ginsengs are obtained from all second class supplemental characteristics I-th of second class supplemental characteristics are decoded, obtain the decoding parametric collection of i-th of second class supplemental characteristics, and root by number data According to the decoding parametric collection prediction i+1 of i-th second class supplemental characteristics into n-th the second class supplemental characteristic at least one the The decoding parametric collection of two class supplemental characteristics, wherein i be from 1 to N-1 in any one natural number, N is all second class parameters The sum of data.
It was found from the decoding process of above-mentioned parameter data, the decoding time of supplemental characteristic can be reduced by above-mentioned decoding process Number, especially for only needing to decode a first kind supplemental characteristic for first kind supplemental characteristic, Jin Erke To improve the acquisition efficiency of decoding parametric collection.Herein it should be noted that：Obtained in all first kind supplemental characteristics any I-th of the second class supplemental characteristics obtained in one first kind supplemental characteristic and all second class supplemental characteristics can be：According to Supplemental characteristic corresponding to first image-region being encoded of coded sequence of selection.
Such as can be first first kind supplemental characteristic in all first kind supplemental characteristics and all second class parameter numbers First the second class supplemental characteristic in, join the decoding parametric collection of first first kind supplemental characteristic as other first kind The decoding parametric collection of number data, predict second the second class supplemental characteristic to n-th the according to first the second class supplemental characteristic The decoding parametric collection of two class supplemental characteristics.
S503：According to each self-corresponding decoding parametric for meeting the decoding request that user pre-sets of each image-region Collection, is decoded to each image-region.
That is, the decoding parametric included according to each self-corresponding decoding parametric collection of each image-region, to each figure As region is decoded.When being decoded to each image-region, any one decoding order can be used, as described above from a left side To the right side, decoding order from top to bottom decodes to image-region, or in units of each image-region, respectively to every Individual image-region is decoded, and the 2nd image-region can such as be decoded after being decoded to the 1st image-region, with It is such to be pushed into last image-region, or in units of every row or each column, every row or each column are decoded respectively.
And when being decoded to image-region, the decoding algorithms such as decoding inter frames or intraframe decoder can be used, for Which kind of specifically using decoding order or decoding algorithm depending on practical application scene, this present invention is not limited.
The decoding request that wherein user pre-sets be user set its wish the target reached, as user pre-sets Decoding request can be solution bit rate and/or decoding quality etc., for setting which kind of decoding request according to practical application scene Depending on.In the present invention, decoding request and coding requirement are corresponding, are that each image-region sets that to meet user pre- in coding side After the coding parameter collection of the coding requirement first set, the supplemental characteristic of coding parameter collection can be decoded in decoding end, just The decoding parametric collection for meeting the decoding request that user pre-sets can be obtained.
, can be according to each after image to be decoded is divided into at least two image-regions by above-mentioned technical proposal Each self-corresponding decoding parametric collection for meeting the decoding request that user pre-sets of image-region, is solved to each image-region Code, obtains the decoding parametric collection for meeting this image-region so that each image-region so as to be embodied as any one image-region Decoding can meet decoding request that user pre-sets.
For foregoing each method embodiment, in order to be briefly described, therefore it is all expressed as to a series of combination of actions, but It is that those skilled in the art should know, the present invention is not limited by described sequence of movement, because according to the present invention, certain A little steps can use other orders or carry out simultaneously.Secondly, those skilled in the art should also know, be retouched in specification The embodiment stated belongs to preferred embodiment, necessary to involved action and the module not necessarily present invention.
Corresponding with above method embodiment, the embodiment of the present invention also provides a kind of picture coding device, its structural representation Figure is as shown in fig. 6, can include：Acquiring unit 11, division unit 12, setting unit 13, coding unit 14, the and of encapsulation unit 15 Transmitting element 16.
Acquiring unit 11, for obtaining image to be encoded.
Division unit 12, for image to be encoded to be divided into at least two image-regions.As division unit 12 can adopt The mode shown in above-mentioned Fig. 1, image to be encoded is divided into multiple bands according to coded sequence from left to right, from top to bottom. That is, any one pair got can be treated using conventional images dividing mode in some embodiments of the invention Coded image, it is divided into multiple images region.
Or division unit 12 can divide image to be encoded using cut-off rule, specifically, acquiring unit 11 obtains The partitioning parameters of every cut-off rule, wherein cut-off rule are used to treat coded image progress region division.Division unit 12 then can be with Using the cut-off rule parallel with each axle of coordinate system, image to be encoded is divided at least two image districts for being shaped as rectangle Domain.Wherein, the cut-off rule parallel with any one axle of coordinate system is separated from each other, and parallel with any one axle of coordinate system Cut-off rule runs through the Zone Full of image to be encoded, and the dimension of coordinate system is identical with the dimension of image to be encoded, and the one of coordinate system Individual axle is parallel with a side of image to be encoded, illustrates the related description referred in above method embodiment, to this not Illustrate again.
Setting unit 13, the coding parameter for the coding requirement that user pre-sets is met for being set for each image-region Collection.I.e. the present invention considers the statistical nature of each image-region, to be set for each image-region on the basis of each image-region Put the coding parameter collection for each meeting the coding requirement that user pre-sets.For example the present invention is previously provided with Image Coding class Type, reference chart image set, interpolation filter, block elimination effect filter parameter, quantization parameter and adaptive loop filter parameter etc. are compiled Code parameter, it is that each image-region chooses the coding ginseng for meeting the coding requirement that user pre-sets from these coding parameters Number, then coding parameter that the coding parameter of selection is stored in image-region are concentrated.
The coding requirement that wherein user pre-sets be user set its wish the target reached, as user pre-sets Coding requirement can be code rate and/or coding quality etc., for setting which kind of coding requirement according to practical application scene Depending on.In some embodiments of the invention, the coding parameter that each image-region is set concentrates for example above-mentioned method of coding parameter Related description in embodiment, this present embodiment is no longer illustrated.
Coding unit 14, for according to each self-corresponding coding parameter collection of each image-region, entering to each image-region Row coding, obtains the view data of each image-region, and for being encoded to each coding parameter collection, obtain each volume Code each self-corresponding supplemental characteristic of parameter set.
That is, the coding that coding unit 14 can include according to each self-corresponding coding parameter collection of each image-region Parameter, each image-region is encoded.When being encoded to each image-region, any one coding can be used suitable Sequence, as described above from left to right, coded sequence from top to bottom encode to image-region, or using each image-region as Unit, each image-region is encoded respectively, such as can be after being encoded to the 1st image-region, to the 2nd image district Domain is encoded, by that analogy to last image-region, or in units of every row or each column, respectively to every row or every Row are encoded.
And when being encoded to image-region, the encryption algorithms such as interframe encode or intraframe coding can be used, for Which kind of specifically using coded sequence or encryption algorithm depending on practical application scene, this present invention is not limited.
For coding parameter collection, in some embodiments of the invention, coding unit 14 is referred to existing coding Algorithm encodes to each coding parameter that coding parameter is concentrated, and obtains the supplemental characteristic of coding parameter collection.
In some embodiments of the invention, coding unit 14 can also concentrate the coding parameter included according to coding parameter To determine how coding parameter collection is encoded, such as all coding parameters are concentrated with any one coding parameter collection：It is determined that with The coding parameter collection for each coding parameter all same that the coding parameter collection includes and each volume included with the coding parameter collection The different coding parameter collection of at least one coding parameter in code parameter, and by the coding parameter sets and coding parameter Ji Bao The coding parameter collection of each coding parameter all same included is defined as first kind coding parameter collection, will include with the coding parameter collection Each coding parameter in the different coding parameter collection of at least one coding parameter be defined as the second class coding parameter collection.
For all first kind coding parameter collection：Concentrated from all first kind coding parameters and obtain any one first kind Coding parameter collection, acquired first kind coding parameter collection is encoded, obtain acquired first kind coding parameter collection Supplemental characteristic, and the supplemental characteristic of acquired first kind coding parameter collection is concentrated other as all first kind coding parameters The supplemental characteristic of first kind coding parameter collection.
For all second class coding parameter collection：I-th of second classes that all second class coding parameters are concentrated are obtained to compile I-th of second class coding parameter collection are encoded, obtain the supplemental characteristic of i-th of second class coding parameter collection by code parameter set, And predict the second class coding parameter collection of i+1 to the class of n-th second according to the supplemental characteristic of i-th of second class coding parameter collection Coding parameter concentrates the supplemental characteristic of at least one second class coding parameter collection, wherein i be from 1 to N-1 in any one from So number, N are the sum of all second class coding parameter collection.
It was found from the coded system of above-mentioned coding parameter collection, coding number can be reduced by above-mentioned coded system, especially It is only to need to encode a first kind coding parameter collection for first kind coding parameter collection, and then can carries High parameter data acquisition efficiency.Herein it should be noted that：Obtain in all first kind coding parameter collection any one the A kind of coding parameter collection and i-th of second class coding parameter collection of all second class coding parameters concentration acquisition can be：According to Coding parameter collection corresponding to first image-region being encoded of coded sequence of selection.
Encapsulation unit 15, for the view data of each image-region and each supplemental characteristic to be carried in image to be encoded Code stream in.
The feasible pattern that wherein image to be encoded carries supplemental characteristic is：Supplemental characteristic is carried into the code in image to be encoded In the image header file of stream, its carrying mode can be：The supplemental characteristic of each coding parameter collection is written to code stream successively In the image header file of the code stream of image to be encoded, or the supplemental characteristic of each coding parameter collection is written to each self-corresponding Before the view data of image-region.
Transmitting element 16, for sending the code stream for the image to be encoded for carrying view data and supplemental characteristic.
In the case where division unit 12 divides image to be encoded using cut-off rule, the Image Coding of the present embodiment offer Coding unit 14 in device, it is additionally operable to encode the partitioning parameters of every cut-off rule, obtains the coded number of every cut-off rule According to.Encapsulation unit 15, is additionally operable to carry the coded data of every cut-off rule and is carrying treating for view data and supplemental characteristic In the code stream of coded image, to cause decoding end to get coded data after the code stream of image to be encoded is received, decoding The partitioning parameters of each bar cut-off rule are obtained after coded data, to draw cut-off rule to divide image.Corresponding transmitting element 16 Send the code stream for the image to be encoded for carrying view data, supplemental characteristic and coded data.
The code stream of image wherein to be encoded includes image head file and view data, and image header file and view data are in code Order in stream is successively：Image header file and view data, carry in described image header file related to image coding and decoding Parameters, therefore in embodiments of the present invention, coded data be able to can be carried in image head text together with same parameter data In part.
Can be each figure after image to be encoded is divided into at least two image-regions by above-mentioned technical proposal Meet the coding parameter collection of the coding requirement that user pre-sets as region is set, according to each self-corresponding volume of each image-region Code parameter set, is encoded to each image-region, meets this image-region so as to be embodied as the setting of any one image-region Coding parameter collection so that the coding of each image-region can meet the coding requirement that each self-corresponding user pre-sets.
Referring to Fig. 7, it illustrates the structural representation of picture decoding apparatus provided in an embodiment of the present invention, can wrap Include：Acquiring unit 21, division unit 22 and decoding unit 23.
Acquiring unit 21, for obtaining image to be decoded.
Division unit 22, for image to be decoded to be divided into at least two image-regions, and obtained by acquiring unit 21 Each self-corresponding supplemental characteristic of each image-region.
Wherein division unit 22 can use mode shown in above-mentioned Fig. 1, according to coded sequence from left to right, from top to bottom Image to be decoded is divided into multiple bands.That is, it can be drawn in some embodiments of the invention using conventional images Any one sub-picture that point mode will be got, is divided into multiple bands (band can be considered as an image-region).
In some embodiments of the invention, division unit 22 can also divide image to be decoded using other modes, So that obtained image-region can break through the limitation of this image-region of band, and then allow image-region using motion Vector forecasting and infra-frame prediction.As improved dividing mode is：Acquiring unit 21 obtains every from the code stream of image to be decoded Each self-corresponding coded data of cut-off rule, and solved by the self-corresponding coded data each to every cut-off rule of decoding unit 23 Code, obtains the respective partitioning parameters of every cut-off rule, and division unit 22 can then use every cut-off rule to draw image to be decoded It is divided at least two image-regions.
For example the self-corresponding coded data each to every cut-off rule of decoding unit 23 decodes, and obtains every cut-off rule Each coordinate in a coordinate system, every point is drawn according to the coordinate of every cut-off rule each in a coordinate system by division unit 22 Secant, image to be decoded is divided at least two image-regions, the wherein dimension of coordinate system is equal to or more than figure to be decoded The dimension of picture, when such as the dimension of image to be decoded is two-dimentional, then the dimension of coordinate system can be two dimension or three-dimensional, and for example wait to solve When the dimension of code image is three-dimensional, then the dimension of coordinate system can be more than three-dimensional or three-dimensional.
Again for example, the self-corresponding coded data each to every cut-off rule of decoding unit 23 decodes, and obtains every segmentation Bar number of the line in all cut-off rules, the bar number are used to indicate cut-off rule is which bar cut-off rule in all cut-off rules, so Division unit 22 draws cut-off rule according to the bar number of cut-off rule in image to be decoded afterwards, and image uniform to be decoded is divided into At least two image-regions.
In some embodiments of the invention, coded data is carried in the image header file of the code stream of image to be decoded, Therefore coded data can be obtained from the image header file of code stream.After image to be decoded is got, according to figure to be decoded As building a coordinate system, the dimension of constructed coordinate system and the dimension of image to be decoded are identical or different, and coordinate system An axle it is parallel with a side of image to be decoded, referring specifically to the related description in embodiment of the method, this is no longer explained State.
Decoding unit 23, for being decoded to each supplemental characteristic, obtain that each image-region is each self-corresponding to be met The decoding parametric collection for the decoding request that user pre-sets, and self-corresponding meet user according to each image-region is each and set in advance The decoding parametric collection for the decoding request put, is decoded to each image-region.
Wherein, supplemental characteristic is carried in the image header file of the code stream of image to be decoded, therefore acquiring unit 21 can be with Come the data that get parms from the image header file of code stream.And decoding of the decoding unit 23 to supplemental characteristic can by but it is unlimited In following manner：
First, to any one supplemental characteristic in all supplemental characteristics, it is determined that with the supplemental characteristic identical parameter number Determined according to the supplemental characteristic different with from the supplemental characteristic, and by the supplemental characteristic and with the supplemental characteristic identical supplemental characteristic For first kind supplemental characteristic, the supplemental characteristic different from the supplemental characteristic is defined as the second class supplemental characteristic.
Secondly, for all first kind supplemental characteristics：Obtained from all first kind supplemental characteristics any one A kind of supplemental characteristic, acquired first kind supplemental characteristic is decoded, obtain the solution of acquired first kind supplemental characteristic Code parameter set, and using the decoding parametric collection of acquired first kind supplemental characteristic as other in all first kind supplemental characteristics the The decoding parametric collection of a kind of supplemental characteristic.
And for all second class supplemental characteristics：I-th of second class ginsengs are obtained from all second class supplemental characteristics I-th of second class supplemental characteristics are decoded, obtain the decoding parametric collection of i-th of second class supplemental characteristics, and root by number data According to the decoding parametric collection prediction i+1 of i-th second class supplemental characteristics into n-th the second class supplemental characteristic at least one the The decoding parametric collection of two class supplemental characteristics, wherein i be from 1 to N-1 in any one natural number, N is all second class parameters The sum of data.
It was found from the decoding process of above-mentioned parameter data, the decoding time of supplemental characteristic can be reduced by above-mentioned decoding process Number, especially for only needing to decode a first kind supplemental characteristic for first kind supplemental characteristic, Jin Erke To improve the acquisition efficiency of decoding parametric collection.Herein it should be noted that：Obtained in all first kind supplemental characteristics any I-th of the second class supplemental characteristics obtained in one first kind supplemental characteristic and all second class supplemental characteristics can be：According to Supplemental characteristic corresponding to first image-region being encoded of coded sequence of selection.
Such as can be first first kind supplemental characteristic in all first kind supplemental characteristics and all second class parameter numbers First the second class supplemental characteristic in, join the decoding parametric collection of first first kind supplemental characteristic as other first kind The decoding parametric collection of number data, predict second the second class supplemental characteristic to n-th the according to first the second class supplemental characteristic The decoding parametric collection of two class supplemental characteristics.
And can be according to each self-corresponding decoding parametric collection of each image-region to the decoding of image-region, decoding unit 23 Including decoding parametric, each image-region is decoded.When being decoded to each image-region, using any one Decoding order, as described above from left to right, decoding order from top to bottom decode to image-region, or with each image Region is unit, and each image-region is decoded respectively, such as can be after being decoded to the 1st image-region, to the 2nd Image-region is decoded, by that analogy to last image-region, or in units of every row or each column, respectively to every Row or each column are decoded.
And when being decoded to image-region, the decoding algorithms such as decoding inter frames or intraframe decoder can be used, for Which kind of specifically using decoding order or decoding algorithm depending on practical application scene, this present invention is not limited.
The decoding request that wherein user pre-sets be user set its wish the target reached, as user pre-sets Decoding request can be solution bit rate and/or decoding quality etc., for setting which kind of decoding request according to practical application scene Depending on.In the present invention, decoding request and coding requirement are corresponding, are that each image-region sets that to meet user pre- in coding side After the coding parameter collection of the coding requirement first set, the supplemental characteristic of coding parameter collection can be decoded in decoding end, just The decoding parametric collection for meeting the decoding request that user pre-sets can be obtained.
, can be according to each after image to be decoded is divided into at least two image-regions by above-mentioned technical proposal Each self-corresponding decoding parametric collection for meeting the decoding request that user pre-sets of image-region, is solved to each image-region Code, obtains the decoding parametric collection for meeting this image-region so that each image-region so as to be embodied as any one image-region Decoding can meet decoding request that user pre-sets.
The embodiment of the present invention also provides a kind of image encoder, and computer program is stored with image encoder, and image is compiled Above-mentioned method for encoding images is realized during code device operation computer program.
The embodiment of the present invention also provides a kind of storage medium, and computer program, computer program are stored with storage medium Above-mentioned method for encoding images is performed during operation.
The embodiment of the present invention also provides a kind of image decoder, and computer program, image solution are stored with image decoder Above-mentioned picture decoding method is realized during code device operation computer program.
The embodiment of the present invention also provides a kind of storage medium, and computer program, computer program are stored with storage medium Above-mentioned picture decoding method is performed during operation.
It should be noted that each embodiment in this specification is described by the way of progressive, each embodiment weight Point explanation is all difference with other embodiment, between each embodiment identical similar part mutually referring to. For device class embodiment, because it is substantially similar to embodiment of the method, so description is fairly simple, related part is joined See the part explanation of embodiment of the method.
Finally, it is to be noted that, herein, such as first and second or the like relational terms be used merely to by One entity or operation make a distinction with another entity or operation, and not necessarily require or imply these entities or operation Between any this actual relation or order be present.Moreover, term " comprising ", "comprising" or its any other variant meaning Covering including for nonexcludability, so that process, method, article or equipment including a series of elements not only include that A little key elements, but also the other element including being not expressly set out, or also include for this process, method, article or The intrinsic key element of equipment.In the absence of more restrictions, the key element limited by sentence "including a ...", is not arranged Except other identical element in the process including the key element, method, article or equipment being also present.
The foregoing description of the disclosed embodiments, those skilled in the art are enable to realize or using the present invention.To this A variety of modifications of a little embodiments will be apparent for a person skilled in the art, and generic principles defined herein can Without departing from the spirit or scope of the present invention, to realize in other embodiments.Therefore, the present invention will not be limited The embodiments shown herein is formed on, and is to fit to consistent with principles disclosed herein and features of novelty most wide Scope.
Described above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should It is considered as protection scope of the present invention.

Claims (22)

1. a kind of method for encoding images, it is characterised in that methods described includes：
Image to be encoded is obtained, and the image to be encoded is divided at least two image-regions；
The coding parameter collection for meeting the coding requirement that user pre-sets is set for each image-region；
According to each self-corresponding coding parameter collection of each image-region, each image-region is encoded, obtains each image The view data in region；
Each coding parameter collection is encoded, obtains each self-corresponding supplemental characteristic of each coding parameter collection；
The view data of each image-region and each supplemental characteristic are carried in the code stream of image to be encoded；
Send the code stream for the image to be encoded for carrying view data and supplemental characteristic.
2. according to the method for claim 1, it is characterised in that methods described also includes：Obtain the segmentation of every cut-off rule Parameter, wherein the cut-off rule is used to treat coded image progress region division；
The partitioning parameters of every cut-off rule are encoded, obtain the coded data of every cut-off rule；
The coded data of every cut-off rule is carried into the code in the image to be encoded for carrying view data and supplemental characteristic In stream.
3. according to the method for claim 2, it is characterised in that described that the image to be encoded is divided at least two figures As region, including：
Using the cut-off rule parallel with each axle of coordinate system, the image to be encoded is divided at least two and is shaped as rectangle Image-region；Wherein, the cut-off rule parallel with any one axle of coordinate system is separated from each other, and with coordinate system any one The parallel cut-off rule of axle runs through the Zone Full of the image to be encoded, the dimension of the coordinate system and the image to be encoded Dimension is identical, and an axle of the coordinate system is parallel with a side of the image to be encoded.
4. according to the method for claim 2, it is characterised in that the supplemental characteristic and the coded data are carried described In the image header file of the code stream of image to be encoded, wherein the supplemental characteristic is used to obtain needed for described image regional decoding Decoding parametric collection, the coded data are used to obtain the cut-off rule for dividing described image region.
5. according to the method for claim 1, it is characterised in that it is described that each coding parameter collection is encoded, obtain every Individual each self-corresponding supplemental characteristic of coding parameter collection, including：
All coding parameters are concentrated with any one coding parameter collection：It is determined that each coding parameter included with the coding parameter collection The coding parameter collection of all same and different from least one coding parameter in each coding parameter that the coding parameter collection includes Coding parameter collection；
The coding parameter collection of the coding parameter collection and each coding parameter all same included with the coding parameter collection is defined as First kind coding parameter collection, at least one coding parameter in each coding parameter that will include from the coding parameter collection are different Coding parameter collection is defined as the second class coding parameter collection；
Concentrated from all first kind coding parameters and obtain any one first kind coding parameter collection, the acquired first kind is encoded Parameter set is encoded, and obtains the supplemental characteristic of acquired first kind coding parameter collection, and the acquired first kind is encoded The supplemental characteristic of parameter set concentrates the supplemental characteristic of other first kind coding parameter collection as all first kind coding parameters；
I-th of second class coding parameter collection that all second class coding parameters are concentrated are obtained, i-th of second classes are encoded and joined Manifold is encoded, and obtains the supplemental characteristic of i-th of second class coding parameter collection, and compile according to i-th of second classes Supplemental characteristic prediction the second class coding parameter collection of i+1 to the second class of n-th coding parameter of code parameter set concentrates at least one The supplemental characteristic of individual second class coding parameter collection, wherein i be from 1 to N-1 in any one natural number, N is all second classes The sum of coding parameter collection.
6. a kind of picture decoding method, it is characterised in that methods described includes：
Image to be decoded is obtained, and the image to be decoded is divided at least two image-regions；
Each self-corresponding supplemental characteristic of each image-region is obtained, and each supplemental characteristic is decoded, is obtained each Each self-corresponding decoding parametric collection for meeting the decoding request that user pre-sets of image-region；
According to each self-corresponding decoding parametric collection for meeting the decoding request that user pre-sets of each image-region, to each figure As region is decoded.
7. according to the method for claim 6, it is characterised in that described that the image to be decoded is divided at least two figures As region, including：Each self-corresponding coded data of every cut-off rule is obtained from the code stream of the image to be decoded；
Self-corresponding coded data each to every cut-off rule decodes, and obtains the partitioning parameters of every cut-off rule；
Every cut-off rule is drawn according to the partitioning parameters of every cut-off rule, will be described to be decoded using every cut-off rule Image is divided at least two image-regions.
8. according to the method for claim 7, it is characterised in that the coded data and the supplemental characteristic are carried described In the image header file of the code stream of image to be decoded.
9. according to the method for claim 6, it is characterised in that it is described that each supplemental characteristic is decoded, obtain Each self-corresponding decoding parametric collection of each image-region, including：
To any one supplemental characteristic in all supplemental characteristics：It is determined that with the supplemental characteristic identical supplemental characteristic and with the ginseng The different supplemental characteristic of number data；
It is defined as first kind supplemental characteristic by the supplemental characteristic and with the supplemental characteristic identical supplemental characteristic, and will be with the parameter The different supplemental characteristic of data is defined as the second class supplemental characteristic；
Any one first kind supplemental characteristic is obtained from all first kind supplemental characteristics, to acquired first kind supplemental characteristic Decoded, obtain the decoding parametric collection of acquired first kind supplemental characteristic, and by acquired first kind supplemental characteristic Decoding parametric collection of the decoding parametric collection as other first kind supplemental characteristics in all first kind supplemental characteristics；
I-th of second class supplemental characteristics are obtained from all second class supplemental characteristics, i-th of second class supplemental characteristics are entered Row decoding, obtains the decoding parametric collection of i-th of second class supplemental characteristics, and according to i-th of second class supplemental characteristics Decoding parametric collection prediction i+1 at least one second class supplemental characteristic into n-th the second class supplemental characteristic decoding ginseng Manifold, wherein i are any one natural number in from 1 to N-1, and N is the sum of all second class supplemental characteristics.
10. a kind of picture coding device, it is characterised in that described device includes：
Acquiring unit, for obtaining image to be encoded；
Division unit, for the image to be encoded to be divided into at least two image-regions；
Setting unit, the coding parameter collection for the coding requirement that user pre-sets is met for being set for each image-region；
Coding unit, for according to each self-corresponding coding parameter collection of each image-region, being encoded to each image-region, The view data of each image-region is obtained, and for being encoded to each coding parameter collection, obtains each coding parameter Collect each self-corresponding supplemental characteristic；
Encapsulation unit, for the view data of each image-region and each supplemental characteristic to be carried in image to be encoded In code stream；
Transmitting element, for sending the code stream for the image to be encoded for carrying view data and supplemental characteristic.
11. device according to claim 10, it is characterised in that the acquiring unit, be additionally operable to obtain every cut-off rule Partitioning parameters, wherein the cut-off rule be used for treat coded image carry out region division；
The coding unit, it is additionally operable to encode the partitioning parameters of every cut-off rule, obtains the coded number of every cut-off rule According to；
The encapsulation unit, it is additionally operable to the coded data carrying of every cut-off rule carrying view data and parameter number described According to image to be encoded code stream in.
12. device according to claim 11, it is characterised in that the division unit, specifically for use and coordinate system The parallel cut-off rule of each axle, the image to be encoded is divided at least two image-regions for being shaped as rectangle；Wherein, The cut-off rule parallel with any one axle of coordinate system is separated from each other, and the cut-off rule parallel with any one axle of coordinate system passes through The Zone Full of the image to be encoded is worn, the dimension of the coordinate system is identical with the dimension of the image to be encoded, the seat An axle for marking system is parallel with a side of the image to be encoded.
13. device according to claim 11, it is characterised in that the supplemental characteristic and the coded data are carried in institute In the image header file for stating the code stream of image to be encoded, wherein the supplemental characteristic is used to obtain needed for described image regional decoding Decoding parametric collection, the coded data is used to obtain the cut-off rule for dividing described image region.
14. device according to claim 10, it is characterised in that the coding unit, specifically for joining to all codings Any one coding parameter collection in manifold：It is determined that the coding parameter of each coding parameter all same included with the coding parameter collection Collection and the coding parameter collection different from least one coding parameter in each coding parameter that the coding parameter collection includes, and will The coding parameter collection and the coding parameter collection of each coding parameter all same included with the coding parameter collection are defined as the first kind Coding parameter collection, the different coding ginseng of at least one coding parameter in each coding parameter that will include from the coding parameter collection Manifold is defined as the second class coding parameter collection；
And concentrated from all first kind coding parameters and obtain any one first kind coding parameter collection, to the acquired first kind Coding parameter collection is encoded, and obtains the supplemental characteristic of acquired first kind coding parameter collection, and by the acquired first kind The supplemental characteristic of coding parameter collection concentrates the supplemental characteristic of other first kind coding parameter collection as all first kind coding parameters； I-th of second class coding parameter collection that all second class coding parameters are concentrated are obtained, to i-th of second class coding parameter collection Encoded, obtain the supplemental characteristic of i-th of second class coding parameter collection, and encode and join according to i-th of second classes Supplemental characteristic prediction i+1 the second class coding parameter collection to the second class of n-th coding parameter of manifold concentrates at least one the The supplemental characteristic of two class coding parameter collection, wherein i be from 1 to N-1 in any one natural number, N be all second classes coding The sum of parameter set.
15. a kind of picture decoding apparatus, it is characterised in that described device includes：
Acquiring unit, for obtaining image to be decoded；
Division unit, for the image to be decoded to be divided into at least two image-regions；
The acquiring unit, it is additionally operable to obtain each self-corresponding supplemental characteristic of each image-region；
Decoding unit, for being decoded to each supplemental characteristic, obtain that each image-region is each self-corresponding to meet use The decoding parametric collection for the decoding request that family is pre-set, and self-corresponding meet user according to each image-region is each and pre-set Decoding request decoding parametric collection, each image-region is decoded.
16. device according to claim 15, it is characterised in that the acquiring unit, be additionally operable to from the figure to be decoded Each self-corresponding coded data of every cut-off rule is obtained in the code stream of picture；
The decoding unit, it is additionally operable to self-corresponding coded data each to every cut-off rule and decodes, obtain every cut-off rule Partitioning parameters；
The division unit, every cut-off rule is drawn specifically for the partitioning parameters according to every cut-off rule, using described The image to be decoded is divided at least two image-regions by every cut-off rule.
17. device according to claim 16, it is characterised in that the coded data and the supplemental characteristic are carried in institute In the image header file for stating the code stream of image to be decoded.
18. device according to claim 15, it is characterised in that the decoding unit, specifically for all parameter numbers Any one supplemental characteristic in：It is determined that from the supplemental characteristic identical supplemental characteristic and the parameter different with the supplemental characteristic Data, and it is defined as first kind supplemental characteristic by the supplemental characteristic and with the supplemental characteristic identical supplemental characteristic, and will be with this The different supplemental characteristic of supplemental characteristic is defined as the second class supplemental characteristic；
And any one first kind supplemental characteristic is obtained from all first kind supplemental characteristics, to acquired first kind parameter Data are decoded, and obtain the decoding parametric collection of acquired first kind supplemental characteristic, and by acquired first kind parameter number According to decoding parametric collection of the decoding parametric collection as other first kind supplemental characteristics in all first kind supplemental characteristics；From all I-th of second class supplemental characteristics are obtained in two class supplemental characteristics, i-th of second class supplemental characteristics are decoded, obtained The decoding parametric collection of i-th of second class supplemental characteristics, and according to the decoding parametric collection of i-th of second class supplemental characteristics The decoding parametric collection of i+1 at least one second class supplemental characteristic into n-th the second class supplemental characteristic is predicted, wherein i is Any one natural number in from 1 to N-1, N are the sum of all second class supplemental characteristics.
19. a kind of image encoder, it is characterised in that computer program is stored with described image encoder, described image is compiled Code device realizes the method for encoding images in claim 1 to 5 described in any one when running the computer program.
20. a kind of storage medium, it is characterised in that computer program, the computer program are stored with the storage medium Perform claim requires the method for encoding images described in 1 to 5 any one during operation.
21. a kind of image decoder, it is characterised in that computer program, described image solution are stored with described image decoder Code device realizes the picture decoding method in claim 6 to 9 described in any one when running the computer program.
22. a kind of storage medium, it is characterised in that computer program, the computer program are stored with the storage medium Perform claim requires the picture decoding method described in 6 to 9 any one during operation.
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