CN102790892B - Depth map coding method and device - Google Patents
Depth map coding method and device Download PDFInfo
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- CN102790892B CN102790892B CN201210232212.3A CN201210232212A CN102790892B CN 102790892 B CN102790892 B CN 102790892B CN 201210232212 A CN201210232212 A CN 201210232212A CN 102790892 B CN102790892 B CN 102790892B
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Abstract
The invention provides a depth map coding method and a device. The depth map coding method includes establishing a plurality of partition lines which are used for performing wedge-shape partition to a depth macro block, and forming the partition lines into a partition set; using an intra coding mode to code the depth micro block to obtain a first rate-distortion cost value; judging whether an inter coding mode is used for coding the depth micro block and using the inter coding mode to code the depth micro block to obtain a second rate-distortion cost value if the inter coding mode is used for coding the depth micro block; and continuing judging whether the depth micro block contains a discontinuous motion vector field and using a geometric partitioning coding mode to code the depth micro block if the depth micro block contains the discontinuous motion vector field, wherein the geometric partitioning coding mode includes selecting an optimal partition line to partition the depth micro block to obtain a first depth subdomain and a second depth subdomain and subjecting the two subdomains to predictive coding to obtain a third rate-distortion cost value; and comparing the rate-distortion cost values in different coding modes so as to select the coding mode with the minimum rate-distortion cost value for coding the depth micro block. According to the depth map coding method and the device, depth map compression efficiencies are improved, and coding complexities are reduced.
Description
Technical field
The present invention relates to technical field of video coding, particularly a kind of depth map encoding method and apparatus.
Background technology
In three-dimensional video-frequency and free viewpoint video system, the data format being made up of multi-view point video and multi-view depth figure obtains a wide range of applications.Wherein, the degree of depth refers to that each pixel in frame of video corresponds to point in the three dimensions distance to camera plane.In three-dimensional video-frequency, expect the corresponding video information of viewpoint of watching in order to obtain user by virtual viewpoint rendering, we need to obtain the corresponding depth map of each frame of video.Therefore, stereoscopic video sequence comprises multichannel color video information and the corresponding depth map sequence of each road color video conventionally.Because the depth information of each pixel in depth map is an integer value between 0-255, therefore depth map can be counted as the video sequence that a series of gray level images form.In order effectively to store and transmit the stereo video data of magnanimity, three-dimensional video-frequency system adopts multi-view point video encoding method to compress respectively multi-view point video and depth map sequence conventionally.By in viewpoint and look a predictive coding, multi-view point video encoding method can compress the redundancy between multichannel depth map effectively.
Traditional multi-view point video encoding method is that a kind of multiple view video coding based on coding standard is H.264/MPEG-4 expanded scheme.In traditional multiple view video coding, encoder is encoded to each two field picture as unit take macro block.The macro block of each 16 × 16 size can be further divided into again the sub-piece of 16 × 8,8 × 16 and 8 × 8 sub-blocks and 8 × 4,4 × 8 and 4 × 4.Different sub-blocks and sub-piece are called as predicting unit.In cataloged procedure, encoder carries out estimation to each predicting unit, obtains the rate distortion costs of motion compensated prediction.Then carry out the model selection based on rate-distortion optimization, obtain each optimum coding mode and prediction residual, and residual error is carried out to transition coding.Experiment showed, that traditional multiple view video coding can obtain good compression performance on depth map.
Be different from traditional color video, depth map only comprises the range information of each pixel, does not comprise any video texture information.Therefore, the coded macroblocks in interior of articles in depth map only comprises the depth texture of homogeneous, and the coded macroblocks that is in object edge comprises two or more discontinuous depth areas.Traditional macroblock partitions cannot represent object edge effectively.Especially under the condition of low encoder bit rate, the sub-block obtaining by division and sub-block mode are less selected.But while adopting traditional multi-view point video encoding method to depth map encoding, encoder still needs all macro block modes to carry out estimation and mode decision.The computational resource that this process need consumption is a large amount of, has increased the complexity of coding side.
In order to obtain higher depth map compression efficiency, need to be for the feature design coding method more efficiently of depth map.For this reason, the present invention is directed to depth map and only comprise this feature of object profile information, propose a kind of depth map encoding method based on how much divisions.Carry out adaptive geometric division by the degree of depth macro block to comprising discontinuous fluid field, obtained preferably and predicted the outcome.Thereby improve the efficiency of depth map encoding, reduce the complexity of depth map encoding simultaneously.
The patent more relevant to the present invention that can find at present has four, and be Chinese patent, the depth map encoding compression method of a kind of 3DTV of being applied to and FTV system is disclosed respectively, a kind of Deepness image encoding method in stereo television system, a kind of coding method of depth image of three-dimensional television system and a kind of coding method of multi-view depth video, application number is respectively 200810063741.9,200810161597.2, and 200810120082.8 and 200910154138.6.Although four mentioned patents all relate to the coding method of depth map in three-dimensional video-frequency, first, second and Section 3 patent have only proposed a kind of encoding scheme that the degree of depth macro block of zones of different is adopted to different quantization parameters respectively.Different degree of depth macro block classification method that difference has been these three conceptual designs; The Section 4 patent coding mode of the degree of depth macro block to different regions limits, and sets more coding mode, and the degree of depth macro block in non-object edge region is set to less coding mode for the degree of depth macro block in object edge region.But in this invention all predicting unit corresponding to coding mode remain defined in the H.264/MPEG-4AVC coding standard based on traditional division methods obtain.Therefore, four mentioned patents all do not relate to the depth map encoding method of dividing based on how much.
Summary of the invention
The present invention is intended at least one of solve the problems of the technologies described above.
For this reason, one object of the present invention is to propose a kind of depth map encoding method that can improve depth map compression efficiency and reduce the encoder complexity of depth map.
Another object of the present invention is to propose a kind of depth map encoding device.
To achieve these goals, the embodiment of first aspect present invention has proposed a kind of depth map encoding method, comprises the following steps: set up multiple dividing lines composition division set, wherein, multiple dividing lines are for carrying out wedge shape division to degree of depth macro block, with intra-frame encoding mode, degree of depth macro block is encoded to obtain the first corresponding rate distortion costs value, judge whether with interframe encoding mode, described degree of depth macro block to be encoded, if it is with interframe encoding mode, described degree of depth macro block is encoded to obtain the second corresponding rate distortion costs value, continue to judge whether described degree of depth macro block comprises discontinuous motion vector field, if described degree of depth macro block carries out interframe encode and comprises discontinuous motion vector field, dividing coding mode with how much encodes to described degree of depth macro block, wherein, the described coding mode of dividing for how much further comprises: from described division set, select optimal dividing line to divide to obtain the first and second degree of depth subregions to described degree of depth macro block according to the monochrome information of all pixels of described degree of depth macro block, and respectively described the first and second degree of depth subregions are carried out to estimation and predictive coding to obtain the 3rd corresponding rate distortion costs value, and the rate distortion costs value of degree of depth macro block under different coding pattern relatively, described degree of depth macro block is encoded according to the coding mode of comparative result selection rate distortion cost minimum.
In addition, depth map encoding method according to the above embodiment of the present invention can also have following additional technical characterictic:
In some instances, described division set is:
G={ξ(ρ
i,θ
i)|i=1,2,L,L}，
Wherein, ξ (ρ
i, θ
i) be i article of dividing line in described dividing line set, ρ
ifor degree of depth macro block is to the distance of this dividing line, θ
ifor the angle of this dividing line and first direction, the number that L is dividing line.
In some instances, described degree of depth macro block to the distance of multiple dividing lines be all positioned at [0,8) between, the angle of multiple dividing lines and first direction be all positioned at [0,2 π) between.
In some instances, the described step that judges whether degree of depth macro block comprises discontinuous motion vector field further comprises: the brightness value that obtains all pixels in described degree of depth macro block; Calculate the variance of the brightness value of all pixels in described degree of depth macro block; And the size of more described variance and predetermined threshold value, if described variance is greater than described predetermined threshold value, judge that described degree of depth macro block comprises discontinuous motion vector field.
In some instances, from described division set, select optimal dividing line according to the monochrome information of all pixels of described degree of depth macro block, the step of described degree of depth macro block being divided to obtain to the first and second degree of depth subregions further comprises: with each dividing line in described division set, described degree of depth macro block is divided respectively, and the average brightness value that calculates respectively in two parts of dividing gained all pixels is separately to obtain corresponding Part I and the average brightness value of Part II; Respectively the average brightness value of Part I corresponding to each dividing line and Part II is done to the poor difference that obtains; And the dividing line that obtains the absolute value maximum that makes difference is as described optimal dividing line, so that described degree of depth macro block is divided to obtain the first and second degree of depth subregions.
In some instances, described step of degree of depth macro block being encoded to obtain the first corresponding rate distortion costs value with intra-frame encoding mode comprises: according to the intra-frame encoding mode in coding standard H.264/MPEG-4AVC, described degree of depth macro block is carried out to intraframe coding, and using corresponding optimum rate distortion costs as described the first rate distortion costs value; Described step of degree of depth macro block being encoded to obtain the second corresponding rate distortion costs value with interframe encoding mode comprises: according to the interframe encoding mode in coding standard H.264/MPEG-4AVC, described degree of depth macro block is carried out to coded in inter mode, and using corresponding optimum rate distortion costs as described the second rate distortion costs value.
In some instances, the rate distortion costs value of degree of depth macro block under described relatively different coding pattern, comprise with the step of described degree of depth macro block being encoded according to the coding mode of comparative result selection rate distortion cost minimum: if judgement is not carried out interframe encode to described degree of depth macro block, only described degree of depth macro block is carried out to intraframe coding; If judge that described degree of depth macro block carries out interframe encode and do not comprise discontinuous motion vector field, select less corresponding interframe encoding mode or the intra-frame encoding mode of rate distortion costs value to encode to described degree of depth macro block according to the comparative result of the first and second rate distortion costs values; And if judge that described degree of depth macro block carries out interframe encode and comprises discontinuous motion vector field, select interframe encoding mode corresponding to minimum rate distortion costs value, intra-frame encoding mode or divide coding modes for how much described degree of depth macro block is encoded to the comparative result of the 3rd rate distortion costs value according to first.
The embodiment of second aspect present invention has proposed a kind of depth map encoding device, comprising: dividing line is set up module, and for setting up multiple dividing lines composition division set, wherein, multiple dividing lines are for carrying out wedge shape division to degree of depth macro block, intraframe coding module, for encoding to obtain the first corresponding rate distortion costs value with intra-frame encoding mode to degree of depth macro block, interframe encode judge module, encodes to described degree of depth macro block with interframe encoding mode for judging whether, interframe encode module, with interframe encoding mode to degree of depth macro block encodes obtain corresponding second rate distortion costs value when the described degree of depth macro block coding with interframe encoding mode for judging at described interframe encode judge module, divide judge module how much, for judging whether described degree of depth macro block comprises discontinuous motion vector field, divide coding module how much, for in the time that described how much division judge modules judge that described degree of depth macro block comprises discontinuous motion vector field, dividing coding mode with how much encodes to described degree of depth macro block, wherein, the described coding mode of dividing for how much comprises: from described division set, select optimal dividing line to divide to obtain the first and second degree of depth subregions to described degree of depth macro block according to the monochrome information of all pixels of described degree of depth macro block, and respectively described the first and second degree of depth subregions are carried out to estimation and predictive coding to obtain the 3rd corresponding rate distortion costs value, and coding mode select module, the rate distortion costs value for more described degree of depth macro block under different coding pattern, with according to the coding mode of comparative result selection rate distortion cost minimum to described degree of depth macro block is encoded.
In addition, depth map encoding device according to the above embodiment of the present invention can also have following additional technical characterictic:
In some instances, described division set is:
G={ξ(ρ
i,θ
i)|i=1,2,L,L}，
Wherein, ξ (ρ
i, θ
i) be i article of dividing line in described dividing line set, ρ
ifor degree of depth macro block is to the distance of this dividing line, θ
ifor the angle of this dividing line and first direction, the number that L is dividing line.
In some instances, described degree of depth macro block to the distance of multiple dividing lines be all positioned at [0,8) between, the angle of multiple dividing lines and first direction be all positioned at [0,2 π) between.
In some instances, the described judge module of dividing for how much is for obtaining the brightness value of all pixels of described degree of depth macro block, and calculate the variance of the brightness value of all pixels in described degree of depth macro block, and the size of more described variance and predetermined threshold value, if described variance is greater than described predetermined threshold value, judge that described degree of depth macro block comprises discontinuous motion vector field.
In some instances, the described coding module of dividing for how much is for dividing described degree of depth macro block with each dividing line of described division set respectively, and calculate respectively the average brightness value of dividing in two parts of gained all pixels separately to obtain corresponding Part I and the average brightness value of Part II, respectively the average brightness value of Part I corresponding to each dividing line and Part II is done to the poor difference that obtains, and the dividing line that obtains the absolute value maximum that makes difference is as described optimal dividing line, so that described degree of depth macro block is divided to obtain the first and second degree of depth subregions.
In some instances, described intraframe coding module is for according to the intra-frame encoding mode of coding standard H.264/MPEG-4AVC, described degree of depth macro block being carried out to intraframe coding, and using corresponding optimum rate distortion costs as described the first rate distortion costs value; Described interframe encode module is for according to the interframe encoding mode of coding standard H.264/MPEG-4AVC, described degree of depth macro block being carried out to coded in inter mode, and using corresponding optimum rate distortion costs as described the second rate distortion costs value.In some instances, described coding mode selects module in the time described degree of depth macro block not being carried out to interframe encode, only select intra-frame encoding mode, in the time that described degree of depth macro block carries out interframe encode and does not comprise discontinuous motion vector field, select less corresponding interframe encoding mode or the intra-frame encoding mode of rate distortion costs value according to the comparative result of the first and second rate distortion costs values, in the time that described degree of depth macro block carries out interframe encode and comprises discontinuous motion vector field, select minimum interframe encoding mode corresponding to rate distortion costs value according to first to the comparative result of the 3rd rate distortion costs value, intra-frame encoding mode or how much division coding modes.
According to depth map encoding method and the device of the embodiment of the present invention, depth map encoding method by design based on how much divisions, select best coding mode to encode to degree of depth macro block according to reasonable manner from interframe encoding mode, intra-frame encoding mode or how much division coding modes, thus, not only improve depth map compression efficiency, reduced compression time, also reduce the complexity of depth map encoding, realize the high efficient coding to depth map.
Additional aspect of the present invention and advantage in the following description part provide, and part will become obviously from the following description, or recognize by practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present invention and advantage accompanying drawing below combination is understood becoming the description of embodiment obviously and easily, wherein:
Fig. 1 is the flow chart of the depth map encoding method of the embodiment of the present invention;
Fig. 2 is the schematic diagram that the dividing line of one embodiment of the invention depth map encoding method is divided degree of depth macro block;
Fig. 3 is the detail flowchart of the depth map encoding method of one embodiment of the invention;
Fig. 4 be the depth map encoding method of one embodiment of the invention employing there are how much fundamental diagrams of dividing the encoder that coding mode encodes;
Fig. 5 is the predict figure to degree of depth macroblock prediction coding mode that the depth map encoding method of one embodiment of the invention adopts the encoder shown in Fig. 4 to encode; And
Fig. 6 is the structure chart of the depth map encoding device of the embodiment of the present invention.
Embodiment
Describe embodiments of the invention below in detail, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has the element of identical or similar functions from start to finish.Be exemplary below by the embodiment being described with reference to the drawings, only for explaining the present invention, and can not be interpreted as limitation of the present invention.
In description of the invention, it will be appreciated that, term " " center ", " longitudinally ", " laterally ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end ", " interior ", orientation or the position relationship of indications such as " outward " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, rather than device or the element of indication or hint indication must have specific orientation, with specific orientation structure and operation, therefore can not be interpreted as limitation of the present invention.In addition, term " first ", " second " be only for describing object, and can not be interpreted as indication or hint relative importance.
In description of the invention, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, and for example, can be to be fixedly connected with, and can be also to removably connect, or connect integratedly; Can be mechanical connection, can be also electrical connection; Can be to be directly connected, also can indirectly be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, can concrete condition understand above-mentioned term concrete meaning in the present invention.
For the coded system to the embodiment of the present invention is verified, in following example of the present invention, it is the standard test sequences of " Book Arrival " that the cycle tests of stereo scopic video coding adopts the name of SD form, the resolution of this SD format video sequence is 1024 × 768, the video that this cycle tests comprises 16 viewpoints and corresponding depth map.In following example of the present invention, all test with the depth map in this cycle tests, adopt the depth map sequence of the 8th viewpoint of this sequence as cycle tests.This sequence comprises 100 frame depth maps.As shown in Figure 4, codec adopts H.264/MPEG-4MVC canonical reference software JMVC6.0; Encoder GOP(Group of Pictures, image sets) frame number be 8; The time domain prediction coding of coding adopts Hierarchical B Picture(stratification bi-directional predictive coding frame, is called for short stratification B frame) predict, coded prediction structure chart is as shown in Figure 5.The size of the degree of depth macro block of each coding is 16 × 16.The precision of estimation is 1/4th pixel precisions.Other coding parameters all adopt with standard H.264/MPEG-4AVC in the parameter setting of regulation in main file time (Main Profile).
Below in conjunction with accompanying drawing, first the depth map encoding method according to the embodiment of the present invention is described.
With reference to figure 1, according to the depth map encoding method of the embodiment of the present invention, comprise the steps:
Step S101, sets up multiple dividing lines and composition is divided set, and wherein, multiple dividing lines are for carrying out wedge shape division to degree of depth macro block.In one embodiment of the invention, dividing set is: G={ ξ (ρ
i, θ
i) | i=1,2, L, L}, wherein, ξ (ρ
i, θ
i) be i article of dividing line in dividing line set, ρ
ifor degree of depth macro block is to the distance of this dividing line, θ
ifor the angle of this dividing line and first direction, the number that L is dividing line.
The division set of multiple dividing line compositions that as shown in Figure 2, definition wedge shape is divided for how much.Definition dividing line is straight line (dividing line as shown in Figure 2), and this straight-line pass is to distance ρ and this straight line and the y axle of degree of depth macro block central point, and the angle theta of first direction represents.In this embodiment, the distance of multiple dividing lines be all positioned at [0,8) between, the angle of multiple dividing lines and first direction be all positioned at [0,2 π) between, the span of two of each dividing line parameter ρ and θ is [0,8) and [0,2 π), the sampling interval of parameter ρ is 1, its value set is ρ={ 0,1,2, L, 7}, the sampling interval of parameter θ is π/16, its value set is
therefore, divide set G={ ξ (ρ
i, θ
i) | i=1,2, L, comprises 256 optional dividing lines, i.e. L=256 altogether in L}.
Step S102, encodes to obtain the first corresponding rate distortion costs value with intra-frame encoding mode to degree of depth macro block.
Particularly, according to the intra-frame encoding mode in coding standard H.264/MPEG-4AVC, degree of depth macro block is carried out to intraframe coding, and using corresponding optimum rate distortion costs as the first rate distortion costs value.More specifically, coding adopts the method identical with the intra-frame encoding mode defining in traditional H.264/MPEG-4AVC coding standard to this degree of depth macro block, is designated as B
kcarry out intraframe predictive coding.In the present embodiment, current degree of depth macro block optimum rate distortion costs under intraframe predictive coding pattern is
the first rate distortion costs value is
Step S103, judges whether with interframe encoding mode, degree of depth macro block to be encoded, and if it is with interframe encoding mode, degree of depth macro block is encoded to obtain the second corresponding rate distortion costs value.
Particularly, according to the interframe encoding mode in coding standard H.264/MPEG-4AVC, described degree of depth macro block is carried out to coded in inter mode, and using corresponding optimum rate distortion costs as described the second rate distortion costs value.In this example, above-mentioned interframe encoding mode is traditional interframe encoding mode.
Step S104, continue to judge whether degree of depth macro block comprises discontinuous motion vector field, if degree of depth macro block carries out interframe encode and comprises discontinuous motion vector field, dividing coding mode with how much encodes to degree of depth macro block, wherein, dividing coding mode how much further comprises: from divide set, select optimal dividing line to divide to obtain the first and second degree of depth subregions to degree of depth macro block according to the monochrome information of all pixels of degree of depth macro block, and respectively the first and second degree of depth subregions are carried out to estimation and predictive coding to obtain the 3rd corresponding rate distortion costs value.
Particularly, in some instances, judge whether with how much partition modes, degree of depth macro block to be encoded, judge that the step whether degree of depth macro block comprises discontinuous motion vector field comprises:
1, obtain the brightness value of all pixels in degree of depth macro block.The degree of depth macro block B of for example present encoding
kwhole pixel set be
wherein N represents the number of pixel in this degree of depth macro block, in the present embodiment, and N=256.Suppose this degree of depth macro block B
kfor the 529th degree of depth macro block of present frame.If B
kthe brightness value of whole pixels be
wherein,
numerical value as shown in following matrix:
2, the variance of the brightness value of all pixels in compute depth macro block.Can know this degree of depth macro block B by calculating
kthe variance of brightness value of all pixels be 838.
3, the size that compares variance and predetermined threshold value, if variance is greater than predetermined threshold value, judges that degree of depth macro block comprises discontinuous motion vector field.For example, this predetermined threshold value is T
s=100, B
kthe variance of the brightness value of all pixels is greater than T
s, therefore judge that degree of depth macro block comprises discontinuous motion vector field.
The step of selecting optimal dividing line to divide to obtain the first and second degree of depth subregions to described degree of depth macro block from divide set according to the monochrome information of all pixels of degree of depth macro block further comprises:
1, with each dividing line of dividing in set, degree of depth macro block is divided respectively, and calculated respectively the average brightness value of dividing in two parts of gained all pixels separately to obtain corresponding Part I and Part II average brightness value.For example, each dividing line that encoder is gathered in G by traversal is searched for B
kcorresponding optimal dividing line.In ergodic process, to each dividing line ξ (ρ
i, θ
i), by B
kbe divided into two parts.Calculate in two parts the average brightness value of all pixels separately, for example, in the time that the value of parameter ρ and parameter θ is 0, now dividing line is for being positioned at macro block B
kthe vertical line segment at center.This dividing line is by macro block B
kbe divided into the equal-sized two parts in left and right, P
1(ρ
0, θ
0) and P
2(ρ
0, θ
0).Now, region P
1(ρ
0, θ
0) in the average brightness value of all pixels be 40.2; Region P
2(ρ
0, θ
0) in the average brightness value of all pixels be 68.1.
2, respectively the average brightness value of Part I corresponding to each dividing line and Part II is done to the poor difference that obtains.According to the example in step 1, P
1(ρ
0, θ
0) and P
2(ρ
0, θ
0) between average brightness value do poor result and be: d=40.2-68.1=-27.9
3, the dividing line that obtains the absolute value maximum that makes difference is as described optimal dividing line, so that described degree of depth macro block is divided to obtain the first and second degree of depth subregions.According to the example in step 2, the absolute value of difference is: Δ d=|40.2-68.1|=27.9.
In like manner, all dividing lines in dividing line set G are all asked for to its degree of depth division of dividing rear correspondence in the mode of step 1-3 poor, divide the dividing line of difference as the dividing line of described current macro optimum using obtaining depth capacity, optimal dividing line is designated as ξ (ρ
opt, θ
opt).In the present embodiment, for degree of depth macro block B
kdepth capacity to divide poor be Δ d
max=65.6.The optimal dividing line ξ (ρ that it is corresponding
opt, θ
opt)parameter value be respectively
According to above-mentioned example, respectively the first and second degree of depth subregions are carried out to estimation to obtain the 3rd corresponding rate distortion costs value, be specially: to B
kadopt optimum dividing line ξ (ρ
opt, θ
opt) be divided into the first and second degree of depth subregions, be designated as P
1(ρ
opt, θ
opt) and P
2(ρ
opt, θ
opt).Then the first and second degree of depth subregions are carried out respectively to estimation, and calculate its corresponding rate distortion costs, in this example, B
kthe 3rd rate distortion costs under how much division coding modes is
Step S105, the relatively rate distortion costs value of degree of depth macro block under different coding pattern, to encode to degree of depth macro block according to the coding mode of comparative result selection rate distortion cost minimum.Particularly, comprise the steps:
If 1 judgement is not carried out interframe encode to degree of depth macro block, only degree of depth macro block is carried out to intraframe coding.
If 2 judge that degree of depth macro block carries out interframe encode and do not comprise discontinuous motion vector field, select less corresponding interframe encoding mode or the intra-frame encoding mode of rate distortion costs value to encode to degree of depth macro block according to the comparative result of the first and second rate distortion costs values.
If 3 judge that degree of depth macro block carries out interframe encode and comprises discontinuous motion vector field, select interframe encoding mode corresponding to minimum rate distortion costs value, intra-frame encoding mode or geometry to divide coding modes according to first to the comparative result of the 3rd rate distortion costs value degree of depth macro block is encoded.
As a concrete example, with above-mentioned B
kfor example: to B
kcarry out the model selection based on rate-distortion optimization.In the present embodiment, because encoder is to B
kcarried out the prediction of how much partition modes, therefore need to divide coding mode at how much, in interframe encoding mode, these three kinds of patterns of intra-frame encoding mode, the pattern of selection rate distortion cost minimum is as B
koptimum code pattern.For B
k, minimum rate distortion costs is:
Therefore, B
koptimum code pattern be how much to divide coding modes.This B
kadopt how much division coding modes to encode.
Referring to Fig. 3, as a concrete example, the depth map encoding method of the embodiment of the present invention can be carried out in accordance with the following steps:
Step S110, arranges how much dividing line set in partition mode.
Step S120, current macro B starts to encode
k.
Step S130, judges B
kwhether be inter-coded macroblocks, if it is go to step S140, otherwise go to step S220.
Step S140, to B
kcarry out intraframe predictive coding and calculate the rate distortion costs under this pattern, and proceeding to step S150.
Step S150, judges B
kwhether carry out coded in inter mode, if it is go to step S160, otherwise go to step S200.
Step S160, to B
kadopt conventional inter pattern encode and calculate the rate distortion costs under this pattern, and proceed to step S170.
Step S170, judges B
kwhether comprise discontinuous fluid field.If it is go to step S180, otherwise go to step S200.
Step S180, according to B
kin the monochrome information of each pixel search for corresponding optimal dividing line.
Step S190, two parts that optimal dividing line is divided into are carried out estimation and coding, and calculate its corresponding rate distortion costs.
Step S200, chooses the pattern of rate distortion costs minimum as B
koptimum code pattern.
Step S210, adopts optimization model coding B
k.
Step S220, judges B
kwhether be last macro block of present frame.If it is end-of-encode, otherwise go to step in S120 to next degree of depth macro block is encoded.
With reference to figure 6, the further embodiment of the present invention has proposed a kind of depth map encoding device 600, comprise that dividing line sets up module 610, intraframe coding module 620, interframe encode judge module 630, interframe encode module 640, divide judge module 650 for how much, divide coding module 660 how much and coding modes are selected modules 670.Wherein:
Dividing line is set up module 610 for setting up multiple dividing lines composition division set, and wherein, multiple dividing lines are for carrying out wedge shape division to degree of depth macro block.Intraframe coding module 620 is for encoding to obtain the first corresponding rate distortion costs value with intra-frame encoding mode to degree of depth macro block.Interframe encode judge module 630 is encoded to described degree of depth macro block with interframe encoding mode for judging whether.When encoding to degree of depth macro block with interframe encoding mode for judging at interframe encode judge module 630, interframe encode module 640, with interframe encoding mode, degree of depth macro block is encoded to obtain the second corresponding rate distortion costs value.Divide judge module 650 for how much for judging whether degree of depth macro block comprises discontinuous motion vector field.Divide coding module 660 for how much in the time that how much division judge modules 650 judge that degree of depth macro block comprises discontinuous motion vector field, dividing coding mode with how much encodes to degree of depth macro block, wherein, how much divide coding modes comprises: from described division set, select optimal dividing line to divide to obtain the first and second degree of depth subregions to degree of depth macro block according to the monochrome information of all pixels of degree of depth macro block, and respectively the first and second degree of depth subregions are carried out to estimation and predictive coding to obtain the 3rd corresponding rate distortion costs value.Coding mode selects module 670 for the rate distortion costs value of degree of depth macro block under different coding pattern relatively, with according to the coding mode of comparative result selection rate distortion cost minimum to described degree of depth macro block is encoded.
In some instances, dividing set is:
G={ξ(ρ
i,θ
i)|i=1,2,L,L}，
Wherein, ξ (ρ
i, θ
i) be i article of dividing line in described dividing line set, ρ
ifor degree of depth macro block is to the distance of this dividing line, θ
ifor the angle of this dividing line and first direction, the number that L is dividing line.
In some instances, degree of depth macro block to the distance of multiple dividing lines be all positioned at [0,8) between, the angle of multiple dividing lines and first direction be all positioned at [0,2 π) between.
In some instances, divide judge module 650 for how much for obtaining the brightness value of all pixels of degree of depth macro block, and the variance of the brightness value of all pixels in compute depth macro block, and the size of comparison variance and predetermined threshold value, if variance is greater than described predetermined threshold value, judge that degree of depth macro block comprises discontinuous motion vector field.
Further, how much divide coding module 660 divides described degree of depth macro block for each dividing line with described division set respectively, and calculate respectively the average brightness value of dividing in two parts of gained all pixels separately to obtain corresponding Part I and the average brightness value of Part II, respectively the average brightness value of Part I corresponding to each dividing line and Part II is done to the poor difference that obtains, and the dividing line that obtains the absolute value maximum that makes difference is as described optimal dividing line, so that described degree of depth macro block is divided to obtain the first and second degree of depth subregions.
In some instances, intraframe coding module 620 is for according to the intra-frame encoding mode of coding standard H.264/MPEG-4AVC, described degree of depth macro block being carried out to intraframe coding, and using corresponding optimum rate distortion costs as described the first rate distortion costs value.
In some instances, interframe encode module 640 is for according to the interframe encoding mode of coding standard H.264/MPEG-4AVC, described degree of depth macro block being carried out to interframe encode, and using corresponding optimum rate distortion costs as described the second rate distortion costs value.
In some instances, coding mode selects module 670 in the time described degree of depth macro block not being carried out to interframe encode, only select intra-frame encoding mode, in the time that described degree of depth macro block carries out interframe encode and does not comprise discontinuous motion vector field, select less corresponding interframe encoding mode or the intra-frame encoding mode of rate distortion costs value according to the comparative result of the first and second rate distortion costs values, in the time that described degree of depth macro block carries out interframe encode and comprises discontinuous motion vector field, select minimum interframe encoding mode corresponding to rate distortion costs value according to first to the comparative result of the 3rd rate distortion costs value, intra-frame encoding mode or how much division coding modes are to encode to described degree of depth macro block.
According to depth map encoding method and the device of the embodiment of the present invention, depth map encoding method by design based on how much divisions, select best coding mode to encode to degree of depth macro block according to reasonable manner from interframe encoding mode, intra-frame encoding mode or how much division coding modes, thus, not only improve depth map compression efficiency, reduced compression time, also reduce the complexity of depth map encoding, realize the high efficient coding to depth map.
In the description of this specification, the description of reference term " embodiment ", " some embodiment ", " example ", " concrete example " or " some examples " etc. means to be contained at least one embodiment of the present invention or example in conjunction with specific features, structure, material or the feature of this embodiment or example description.In this manual, the schematic statement of above-mentioned term is not necessarily referred to identical embodiment or example.And specific features, structure, material or the feature of description can be with suitable mode combination in any one or more embodiment or example.
Although illustrated and described embodiments of the invention, those having ordinary skill in the art will appreciate that: in the situation that not departing from principle of the present invention and aim, can carry out multiple variation, modification, replacement and modification to these embodiment, scope of the present invention is by claim and be equal to and limit.
Claims (14)
1. a depth map encoding method, is characterized in that, comprises the following steps:
Set up multiple dividing lines composition division set, wherein, multiple dividing lines are for carrying out wedge shape division to degree of depth macro block;
With intra-frame encoding mode, degree of depth macro block is encoded to obtain the first corresponding rate distortion costs value;
Judge whether with interframe encoding mode, described degree of depth macro block to be encoded, if it is with interframe encoding mode, described degree of depth macro block is encoded to obtain the second corresponding rate distortion costs value;
Continue to judge whether described degree of depth macro block comprises discontinuous motion vector field, if described degree of depth macro block comprises discontinuous motion vector field and carries out interframe encode, dividing coding mode with how much encodes to described degree of depth macro block, wherein, the described coding mode of dividing for how much further comprises: from described division set, select optimal dividing line to divide to obtain the first and second degree of depth subregions to described degree of depth macro block according to the monochrome information of all pixels of described degree of depth macro block, and respectively described the first and second degree of depth subregions are carried out to estimation and predictive coding to obtain the 3rd corresponding rate distortion costs value, and
The relatively rate distortion costs value of degree of depth macro block under different coding pattern, to encode to described degree of depth macro block according to the coding mode of comparative result selection rate distortion cost minimum.
2. depth map encoding method according to claim 1, is characterized in that, described division set is:
G={ξ(ρ
i,θ
i)|i=1,2,L,L}，
Wherein, ξ (ρ
i, θ
i) be i article of dividing line in described dividing line set, ρ
ifor degree of depth macro block is to the distance of this dividing line, θ
ifor the angle of the y axle of this dividing line and planar coordinate system, the number that L is dividing line.
3. depth map encoding method according to claim 2, it is characterized in that, described i article of dividing line to the pixel distance at described degree of depth macro block center be positioned at [0,8) between pixel, the angle of the y axle of multiple dividing lines and planar coordinate system be all positioned at [0,2 π) between.
4. depth map encoding method according to claim 1, is characterized in that, the described step that judges whether degree of depth macro block comprises discontinuous motion vector field further comprises:
Obtain the brightness value of all pixels in described degree of depth macro block;
Calculate the variance of the brightness value of all pixels in described degree of depth macro block; And
The size of more described variance and predetermined threshold value, if described variance is greater than described predetermined threshold value, judges that described degree of depth macro block comprises discontinuous motion vector field.
5. depth map encoding method according to claim 1, it is characterized in that, according to the monochrome information of all pixels of described degree of depth macro block, the step of selecting optimal dividing line to divide to obtain the first and second degree of depth subregions to described degree of depth macro block from described division set further comprises:
With each dividing line in described division set, described degree of depth macro block is divided respectively, and calculated respectively the average brightness value of dividing in two parts of gained all pixels separately to obtain corresponding Part I and the average brightness value of Part II;
Respectively Part I corresponding to each dividing line and Part II average brightness value are done to the poor difference that obtains; And
Obtain the dividing line of the absolute value maximum that makes difference as described optimal dividing line, so that described degree of depth macro block is divided to obtain the first and second degree of depth subregions.
6. depth map encoding method according to claim 1, is characterized in that, described step of degree of depth macro block being encoded to the first rate distortion costs value of obtaining correspondence with intra-frame encoding mode comprises:
According to the intra-frame encoding mode in coding standard H.264/MPEG-4AVC, described degree of depth macro block is carried out to intraframe coding, and using corresponding optimum rate distortion costs as described the first rate distortion costs value;
Described step of degree of depth macro block being encoded to the second rate distortion costs value of obtaining correspondence with interframe encoding mode comprises:
According to the interframe encoding mode in coding standard H.264/MPEG-4AVC, described degree of depth macro block is carried out to coded in inter mode, and using corresponding optimum rate distortion costs as described the second rate distortion costs value.
7. depth map encoding method according to claim 1, it is characterized in that, the rate distortion costs value of degree of depth macro block under described relatively different coding pattern, comprises with the step of described degree of depth macro block being encoded according to the coding mode of comparative result selection rate distortion cost minimum:
If judgement is not carried out interframe encode to described degree of depth macro block, only described degree of depth macro block is carried out to intraframe coding;
If judge that described degree of depth macro block carries out interframe encode and do not comprise discontinuous motion vector field, select less corresponding interframe encoding mode or the intra-frame encoding mode of rate distortion costs value to encode to described degree of depth macro block according to the comparative result of the first and second rate distortion costs values; And
If judge that described degree of depth macro block carries out interframe encode and comprises discontinuous motion vector field, select interframe encoding mode corresponding to minimum rate distortion costs value, intra-frame encoding mode or geometry to divide coding modes according to first to the comparative result of the 3rd rate distortion costs value described degree of depth macro block is encoded.
8. a depth map encoding device, is characterized in that, comprising:
Dividing line is set up module, and for setting up multiple dividing lines composition division set, wherein, multiple dividing lines are for carrying out wedge shape division to degree of depth macro block;
Intraframe coding module, for encoding to obtain the first corresponding rate distortion costs value with intra-frame encoding mode to degree of depth macro block;
Interframe encode judge module, encodes to described degree of depth macro block with interframe encoding mode for judging whether;
Interframe encode module, with interframe encoding mode to degree of depth macro block encodes obtain corresponding second rate distortion costs value when the described degree of depth macro block coding with interframe encoding mode for judging at described interframe encode judge module;
Divide judge module how much, for judging whether described degree of depth macro block comprises discontinuous motion vector field;
Divide coding module how much, for in the time that described how much division judge modules judge that described degree of depth macro block carries out interframe encode and comprises discontinuous motion vector field, dividing coding mode with how much encodes to described degree of depth macro block, wherein, the described coding mode of dividing for how much comprises: from described division set, select optimal dividing line to divide to obtain the first and second degree of depth subregions to described degree of depth macro block according to the monochrome information of all pixels of described degree of depth macro block, and respectively described the first and second degree of depth subregions are carried out to estimation and predictive coding to obtain the 3rd corresponding rate distortion costs value, and
Coding mode select module, the rate distortion costs value for more described degree of depth macro block under different coding pattern, with according to the coding mode of comparative result selection rate distortion cost minimum to described degree of depth macro block is encoded.
9. depth map encoding device according to claim 8, is characterized in that, described division set is:
G={ξ(ρ
i,θ
i)|i=1,2,L,L}，
Wherein, ξ (ρ
i, θ
i) be i article of dividing line in described dividing line set, ρ
ifor degree of depth macro block is to the distance of this dividing line, θ
ifor the angle of the y axle of this dividing line and planar coordinate system, the number that L is dividing line.
10. depth map encoding device according to claim 9, it is characterized in that, described i article of dividing line to the pixel distance at described degree of depth macro block center be positioned at [0,8) between pixel, the angle of the y axle of multiple dividing lines and planar coordinate system be all positioned at [0,2 π) between.
11. depth map encoding devices according to claim 8, it is characterized in that, the described judge module of dividing for how much is for obtaining the brightness value of all pixels of described degree of depth macro block, and calculate the variance of the brightness value of all pixels in described degree of depth macro block, and the size of more described variance and predetermined threshold value, if described variance is greater than described predetermined threshold value, judge that described degree of depth macro block comprises discontinuous motion vector field.
12. depth map encoding devices according to claim 8, it is characterized in that, the described coding module of dividing for how much is for dividing described degree of depth macro block with each dividing line of described division set respectively, and calculate respectively the average brightness value of dividing in two parts of gained all pixels separately to obtain corresponding Part I and the average brightness value of Part II, respectively the average brightness value of Part I corresponding to each dividing line and Part II is done to the poor difference that obtains, and the dividing line that obtains the absolute value maximum that makes difference is as described optimal dividing line, so that described degree of depth macro block is divided to obtain the first and second degree of depth subregions.
13. depth map encoding devices according to claim 8, is characterized in that,
Described intraframe coding module is for according to the intra-frame encoding mode of coding standard H.264/MPEG-4AVC, described degree of depth macro block being carried out to intraframe coding, and using corresponding optimum rate distortion costs as described the first rate distortion costs value;
Described interframe encode module is for according to the interframe encoding mode of coding standard H.264/MPEG-4AVC, described degree of depth macro block being carried out to coded in inter mode, and using corresponding optimum rate distortion costs as described the second rate distortion costs value.
14. depth map encoding devices according to claim 8, it is characterized in that, described coding mode selects module in the time described degree of depth macro block not being carried out to interframe encode, only select intra-frame encoding mode, in the time that described degree of depth macro block carries out interframe encode and does not comprise discontinuous motion vector field, select less corresponding interframe encoding mode or the intra-frame encoding mode of rate distortion costs value to encode to described degree of depth macro block according to the comparative result of the first and second rate distortion costs values, in the time that described degree of depth macro block carries out interframe encode and comprises discontinuous motion vector field, select minimum interframe encoding mode corresponding to rate distortion costs value according to first to the comparative result of the 3rd rate distortion costs value, intra-frame encoding mode or how much division coding modes are encoded to described degree of depth macro block.
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Families Citing this family (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102216585B1 (en) * | 2013-01-04 | 2021-02-17 | 삼성전자주식회사 | Encoding apparatus and decoding apparatus for depth map, and encoding method and decoding method |
| MX349793B (en) | 2013-01-08 | 2017-08-11 | Lg Electronics Inc | Method and apparatus for processing video signal. |
| CN103067715B (en) | 2013-01-10 | 2016-12-28 | 华为技术有限公司 | The decoding method of depth image and coding and decoding device |
| CN103929650B (en) * | 2013-01-10 | 2017-04-12 | 乐金电子(中国)研究开发中心有限公司 | Depth coding unit coding method and decoding method, encoder and decoder |
| CN103067716B (en) | 2013-01-10 | 2016-06-29 | 华为技术有限公司 | The decoding method of depth image and coding and decoding device |
| CN103974063A (en) * | 2013-01-28 | 2014-08-06 | 乐金电子(中国)研究开发中心有限公司 | Encoding and decoding method of depth model and video coder decoder |
| CN104104964B (en) * | 2013-04-09 | 2019-03-12 | 乐金电子(中国)研究开发中心有限公司 | A kind of depth image interframe encode, coding/decoding method, encoder and decoder |
| WO2014166116A1 (en) | 2013-04-12 | 2014-10-16 | Mediatek Inc. | Direct simplified depth coding |
| CN103237214B (en) * | 2013-04-12 | 2016-06-08 | 华为技术有限公司 | The decoding method of depth image and coding and decoding device |
| WO2014166119A1 (en) * | 2013-04-12 | 2014-10-16 | Mediatek Inc. | Stereo compatibility high level syntax |
| CN103237216B (en) * | 2013-04-12 | 2017-09-12 | 华为技术有限公司 | The decoding method and coding and decoding device of depth image |
| WO2015003383A1 (en) | 2013-07-12 | 2015-01-15 | Mediatek Singapore Pte. Ltd. | Methods for inter-view motion prediction |
| CN103841405B (en) * | 2014-03-21 | 2016-07-06 | 华为技术有限公司 | The decoding method of depth image and coding and decoding device |
| WO2016123801A1 (en) * | 2015-02-06 | 2016-08-11 | Mediatek Singapore Pte. Ltd. | Methods for partition mode coding |
| WO2016123783A1 (en) * | 2015-02-05 | 2016-08-11 | 华为技术有限公司 | Image prediction processing method and related device |
| CN105007494B (en) * | 2015-07-20 | 2018-11-13 | 南京理工大学 | Wedge-shaped Fractionation regimen selection method in a kind of frame of 3D video depths image |
| WO2017020808A1 (en) * | 2015-07-31 | 2017-02-09 | Versitech Limited | A depth discontinuity-based method for efficient intra coding for depth videos |
| CN109600600B (en) * | 2018-10-31 | 2020-11-03 | 万维科研有限公司 | Encoder, encoding method, and storage method and format of three-layer expression relating to depth map conversion |
| WO2021196235A1 (en) * | 2020-04-03 | 2021-10-07 | Oppo广东移动通信有限公司 | Inter-frame prediction method, encoder, decoder, and storage medium |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0631441A2 (en) * | 1993-06-22 | 1994-12-28 | Canon Kabushiki Kaisha | Image processing apparatus |
| CN101198066A (en) * | 2006-12-04 | 2008-06-11 | 中兴通讯股份有限公司 | Frame and intraframe coding mode selection method |
| CN101304529A (en) * | 2008-06-06 | 2008-11-12 | 浙江大学 | Method and device for selecting macro block pattern |
| CN101640802A (en) * | 2009-08-28 | 2010-02-03 | 北京工业大学 | Video inter-frame compression coding method based on macroblock features and statistical properties |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101742296B (en) * | 2008-11-14 | 2016-01-20 | 北京中星微电子有限公司 | Reduce video coding-decoding method and the device of the fluctuation of bit stream data amount |
-
2012
- 2012-07-05 CN CN201210232212.3A patent/CN102790892B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0631441A2 (en) * | 1993-06-22 | 1994-12-28 | Canon Kabushiki Kaisha | Image processing apparatus |
| CN101198066A (en) * | 2006-12-04 | 2008-06-11 | 中兴通讯股份有限公司 | Frame and intraframe coding mode selection method |
| CN101304529A (en) * | 2008-06-06 | 2008-11-12 | 浙江大学 | Method and device for selecting macro block pattern |
| CN101640802A (en) * | 2009-08-28 | 2010-02-03 | 北京工业大学 | Video inter-frame compression coding method based on macroblock features and statistical properties |
Non-Patent Citations (4)
| Title |
|---|
| Complexity-Reduced Geometry Partitioning Search and High Efficiency Prediction for Video Ciding;Wang qifei等;《2012 IEEE International Symposium on Circuits and Systems》;20120531;133-136 * |
| Wang qifei等.Complexity-Reduced Geometry Partitioning Search and High Efficiency Prediction for Video Ciding.《2012 IEEE International Symposium on Circuits and Systems》.2012,133-136. |
| 朱冬冬，戴琼海.H.264快速帧间编码模式选择算法.《有线电视技术》.2004,(第9期),36-40. * |
| 谭仕勇,戴琼海,陈慧蓉.MPEG-4标准中的视频编码.《广播与电视技术》.2001,(第6期),52-60. * |
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