WO2015100710A1 - Existence of inter-view reference picture and availability of 3dvc coding tools - Google Patents

Existence of inter-view reference picture and availability of 3dvc coding tools Download PDF

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WO2015100710A1
WO2015100710A1 PCT/CN2014/070009 CN2014070009W WO2015100710A1 WO 2015100710 A1 WO2015100710 A1 WO 2015100710A1 CN 2014070009 W CN2014070009 W CN 2014070009W WO 2015100710 A1 WO2015100710 A1 WO 2015100710A1
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view
prediction
inter
picture
slice
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French (fr)
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Jicheng An
Yi-Wen Chen
Kai Zhang
Jian-Liang Lin
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MediaTek Singapore Pte Ltd
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MediaTek Singapore Pte Ltd
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Priority to PCT/CN2014/070009 priority Critical patent/WO2015100710A1/en
Priority to CN201410784515.5A priority patent/CN104768015B/en
Priority to US14/582,115 priority patent/US9621920B2/en
Priority to EP14200622.0A priority patent/EP2892237A1/en
Publication of WO2015100710A1 publication Critical patent/WO2015100710A1/en
Anticipated expiration legal-status Critical
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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
    • H04N19/50—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding
    • H04N19/597—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding specially adapted for multi-view video sequence encoding
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/10—Processing, recording or transmission of stereoscopic or multi-view image signals
    • H04N13/106—Processing image signals
    • H04N13/161—Encoding, multiplexing or demultiplexing different image signal components
    • 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
    • H04N19/102—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or selection affected or controlled by the adaptive coding
    • H04N19/103—Selection of coding mode or of prediction mode
    • 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
    • H04N19/102—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or selection affected or controlled by the adaptive coding
    • H04N19/103—Selection of coding mode or of prediction mode
    • H04N19/105—Selection of the reference unit for prediction within a chosen coding or prediction mode, e.g. adaptive choice of position and number of pixels used for prediction
    • 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
    • H04N19/136—Incoming video signal characteristics or properties
    • H04N19/137—Motion inside a coding unit, e.g. average field, frame or block difference
    • H04N19/139—Analysis of motion vectors, e.g. their magnitude, direction, variance or reliability
    • 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
    • H04N19/176—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 the region being a block, e.g. a macroblock
    • 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
    • H04N19/50—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding
    • H04N19/503—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving temporal prediction
    • H04N19/51—Motion estimation or motion compensation
    • H04N19/513—Processing of motion vectors

Definitions

  • the invention relates generally to Three-Dimensional (3D) video processing.
  • the present invention relates to methods for the availability of some coding tools in 3D video coding.
  • 3D video coding is developed for encoding or decoding video data of multiple views simultaneously captured by several cameras. Since all cameras capture the same scene from different viewpoints, multi-view video data contains a large amount of inter-view redundancy.
  • additional tools such as inter-view motion prediction (IVMP), advanced residual prediction (ARP), and view synthesized prediction (VSP) have been integrated to conventional 3D-HEVC (High Efficiency Video Coding) or 3D-AVC (Advanced Video Coding) codec.
  • IVMP inter-view motion prediction
  • ARP advanced residual prediction
  • VSP view synthesized prediction
  • the disparity vector (DV) derivation is an important step in those 3DVC coding tools, which is in section H.8.5.5 and H.8.3.8 in JCT3V-F1001_v4.
  • the derived DV is used to locate the reference block in the reference view for IVMP, ARP or VSP.
  • the DV is unavailable when there is no any inter-view picture in current reference picture lists (both listO and list 1) and in this situation (i.e., the reference view of DV is a meaningless value, -1, in JCT3V-F1001_v4), those coding tools such as IVMP, ARP and VSP should not be used any more.
  • the IVMP and VSP are still used even if the DV is unavailable, and the behavior of IVMP and VSP are undefined and unpredictable because they use a meaningless DV value.
  • Fig. 1 is a diagram illustrating the current IVMP and VSP derivation
  • Fig. 2 is a diagram illustrating the proposed IVMP and VSP derivation.
  • the IVMP and VSP are proposed to be disabled when there is no inter- view picture in both current reference picture listsO and listl . That is also to say, that the sub-PU temporal inter- view motion vector candidate, shifted temporal inter-view motion vector candidate, and the VSP candidate are not inserted into the merge candidate list when the reference view index of derived DV is a meaningless value.
  • Fig. 1 shows the current derivation for IVMP and VSP, which doesn't consider the availability of DV
  • Fig. 2 shows the proposed method.
  • nPbW and nPbH specifying the width and the height, respectively, of the current prediction unit
  • the flag availableFlagLXInterView is set equal to 0, the variable refldxLX is set equal to -1, and both components of mvLXInterView are set equal to 0.
  • the reference layer luma location ( xRef, yRef ) is derived by
  • xRefFull xPb + ( nPbW » 1 ) + ( ( mvDisp[ 0 ] + 2 ) » 2 ) (H-122)
  • xRef Clip3( 0, PicWidthInSamples L - 1, ( xRefFull » 3 ) « 3 ) (H-124)
  • yRef Clip3( 0, PicHeightInSamples L - 1, ( yRefFull » 3 ) « 3 ) (H-125)
  • variable ivRefPic is set equal to the picture with Viewldx equal to refViewIdx in the current access unit.
  • variable ivRefPb specifies the luma prediction block covering the location given by ( xRef, yRef ) inside the inter- view reference picture specified by ivRefPic.
  • the luma location ( xIvRefPb, ylvRefPb ) is set equal to the top-left sample of the inter-view reference luma prediction block specified by ivRefPb relative to the top-left luma sample of the inter-view reference picture specified by ivRefPic.
  • ivRefPb is not coded in an intra prediction mode, the following applies, for Y in the range of X to (1 - X), inclusive:
  • refPicListLYIvRef, predFlagLYIvRef[ x ][ y ], mvLYIvRef[ x ][ y ], and refidxLYIvRef[ x ][ y ] are set equal to the corresponding variables of the inter- view reference picture specified by ivRefPic, RefPicListLY,, PredFlagLY[ x ][ y ], MvLY[ x ][ y ], and RefIdxLY[ x ][ y ], respectively.
  • predFlagLYIvRef[ xIvRefPb ][ ylvRefPb ] is equal to 1, the following applies for each i from 0 to num ref idx lX active minusl, inclusive:
  • PicOrderCnt( refPicListLYIvRef[ refidxLYIvRef[ xIvRefPb ][ ylvRefPb ] ]) is equal to PicOrderCnt( RefPicListLX[ i ] ) and availableFlagLXInterView is equal to 0, the following applies.
  • variable availableFlagVSP is set equal to 1
  • the variables predFlagLOVSP and predFlagLlVSP are set equal to 0
  • the variables refldxLOVSP and refldxLlVSP are set equal to -1
  • the variable refViewAvailableFlag is set equal to 0.
  • variable availableFlagVSP is set equal to 0 and the whole decoding process specified in this subclause terminates.
  • refViewAvailableFlag is set equal to 0 and the following applies:
  • refViewAvailableFlag predFlagLYVSP
  • mvLYVSP mvLYVSP
  • refidxLYVSP refidxLYVSP
  • predFlagLYVSP 1 (H- 139)
  • mvLYVSP is modified as specified in the following:
  • td Clip3( -128, 127, Viewld - view_id_val[ RefViewIdx[ xCb ][ yCb ] ) ] (H-142)
  • tb Clip3( -128, 127, Viewld - Viewld( RefPicListY[ i ] ) ) (H-143)
  • tx ( 16384 + ( Abs( td ) » 1 ) ) / td (H-144)
  • distScaleFactor Clip3( -4096, 4095, ( tb * tx + 32 ) » 6 ) (H-145)
  • mvLYVSP[ 0 ] Clip3( -32768, 32767, Sign2( distScaleFactor * mvLYVSP[ 0 ] )
  • mvLYVSP[ 1 ] Clip3( -32768, 32767, Sign2( distScaleFactor * mvLYVSP[ 1 ] )
  • an embodiment of the present invention can be a circuit integrated into a video compression chip or program codes integrated into video compression software to perform the processing described herein.
  • An embodiment of the present invention may also be program codes to be executed on a Digital Signal Processor (DSP) to perform the processing described herein.
  • DSP Digital Signal Processor
  • the invention may also involve a number of functions to be performed by a computer processor, a digital signal processor, a microprocessor, or field programmable gate array (FPGA).
  • processors can be configured to perform particular tasks according to the invention, by executing machine-readable software code or firmware code that defines the particular methods embodied by the invention.
  • the software code or firmware codes may be developed in different programming languages and different format or style.
  • the software code may also be compiled for different target platform.
  • different code formats, styles and languages of software codes and other means of configuring code to perform the tasks in accordance with the invention will not depart from the spirit and scope of the invention.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)

Abstract

The availability of some 3DVC coding tools such as IVMP and VSP is proposed to be dependent with the existence of inter-view reference picture, which makes the IVMP and VSP behave in a reasonable way when there is no inter-view picture in current reference lists. In the original case, an undefined behavior might happen due to the invalid DV. In this invention, it is proposed to conditionally disable the IVMP and VSP when the derived DV is invalid.

Description

EXISTENCE OF INTER- VIEW REFERENCE PICTURE AND AVAILABILITY OF 3DVC CODING TOOLS
TECHNICAL FIELD
[0001] The invention relates generally to Three-Dimensional (3D) video processing. In particular, the present invention relates to methods for the availability of some coding tools in 3D video coding.
BACKGROUND
[0002] 3D video coding is developed for encoding or decoding video data of multiple views simultaneously captured by several cameras. Since all cameras capture the same scene from different viewpoints, multi-view video data contains a large amount of inter-view redundancy. To exploit the inter-view redundancy, additional tools such as inter-view motion prediction (IVMP), advanced residual prediction (ARP), and view synthesized prediction (VSP) have been integrated to conventional 3D-HEVC (High Efficiency Video Coding) or 3D-AVC (Advanced Video Coding) codec.
[0003] For the detailed information about such coding tools in 3D-HEVC, one can refer to the document JCT3V-F1001_v4 which can be found at http://phenix.it- sudparis.eu/jct2/doc_end_user/documents/6_Geneva/wgl l/JCT3 V-F1001-v4.zip. The description for IVMP is in the section H.8.5.3.2.16 and H.8.5.3.2.11. The description for VSP is in the section H.8.5.3.2.13 and H.8.5.3.3.8, and the description for ARP is in section H.8.5.3.3.1 and H.8.5.3.3.7.
The disparity vector (DV) derivation is an important step in those 3DVC coding tools, which is in section H.8.5.5 and H.8.3.8 in JCT3V-F1001_v4. The derived DV is used to locate the reference block in the reference view for IVMP, ARP or VSP. The DV is unavailable when there is no any inter-view picture in current reference picture lists (both listO and list 1) and in this situation (i.e., the reference view of DV is a meaningless value, -1, in JCT3V-F1001_v4), those coding tools such as IVMP, ARP and VSP should not be used any more. However, in current 3D-HEVC, the IVMP and VSP are still used even if the DV is unavailable, and the behavior of IVMP and VSP are undefined and unpredictable because they use a meaningless DV value. SUMMARY
[0004] In light of the previously described problems, the availability of some 3DVC coding tools such as IVMP and VSP should be dependent with the existence of inter-view reference picture.
[0005] Other aspects and features of the invention will become apparent to those with ordinary skill in the art upon review of the following descriptions of specific embodiments.
BRIEF DESCRIPTION OF DRAWINGS
[0006] The invention can be more fully understood by reading the subsequent description and examples with references made to the accompanying drawings, wherein:
[0007] Fig. 1 is a diagram illustrating the current IVMP and VSP derivation;
[0008] Fig. 2 is a diagram illustrating the proposed IVMP and VSP derivation.
DETAILED DESCRIPTION
[0009] The following description is of the best-contemplated mode of carrying out the invention. This description is made for the purpose of illustrating the general principles of the invention and should not be taken in a limiting sense. The scope of the invention is best determined by reference to the appended claims.
[0010] The IVMP and VSP are proposed to be disabled when there is no inter- view picture in both current reference picture listsO and listl . That is also to say, that the sub-PU temporal inter- view motion vector candidate, shifted temporal inter-view motion vector candidate, and the VSP candidate are not inserted into the merge candidate list when the reference view index of derived DV is a meaningless value.
[OOllJWhen there is no inter-view picture in both current reference picture listsO and listl, the derived DV is not valid, which can be used as the judgment. Fig. 1 shows the current derivation for IVMP and VSP, which doesn't consider the availability of DV, and Fig. 2 shows the proposed method.
[0012] The related section of current 3D-HEVC draft text in JCT3V-F1001_v4 is modified as follows, the added part is highlighted: H.8.5.3.2.11 Derivation process for a temporal inter-view motion vector candidate
This process is not invoked when iv_mv_pred_flag[ nuh layer id ] is equal to 0.
Inputs to this process are:
- a luma location ( xPb, yPb ) of the top-left luma sample of the current prediction unit relative to the top-left luma sample of the current picture,
- variables nPbW and nPbH specifying the width and the height, respectively, of the current prediction unit,
- a prediction list indication X,
- a reference view index refViewIdx.
- a disparity vector mvDisp,
Outputs of this process are:
- a flag availableFlagLXInterView specifying whether the temporal inter-view motion vector candidate is available,
- a temporal inter-view motion vector candidate mvLXInterView,
- a reference index refldxLX specifying a reference picture in the reference picture list
RefPicListLX,
The flag availableFlagLXInterView is set equal to 0, the variable refldxLX is set equal to -1, and both components of mvLXInterView are set equal to 0.
When the refViewIdx is equal to -1, the whole decoding process specified in this subclause terminates.
When X is equal to 1 and the current slice is not a B slice the whole decoding process specified in this subclause terminates.
The reference layer luma location ( xRef, yRef ) is derived by
xRefFull = xPb + ( nPbW » 1 ) + ( ( mvDisp[ 0 ] + 2 ) » 2 ) (H-122)
yRefFull = yPb + ( nPbH » 1 ) + ( ( mvDisp[ 1 ] + 2 ) » 2 ) (H-123)
xRef = Clip3( 0, PicWidthInSamplesL - 1, ( xRefFull » 3 ) « 3 ) (H-124)
yRef = Clip3( 0, PicHeightInSamplesL - 1, ( yRefFull » 3 ) « 3 ) (H-125)
The variable ivRefPic is set equal to the picture with Viewldx equal to refViewIdx in the current access unit.
The variable ivRefPb specifies the luma prediction block covering the location given by ( xRef, yRef ) inside the inter- view reference picture specified by ivRefPic.
The luma location ( xIvRefPb, ylvRefPb ) is set equal to the top-left sample of the inter-view reference luma prediction block specified by ivRefPb relative to the top-left luma sample of the inter-view reference picture specified by ivRefPic. When ivRefPb is not coded in an intra prediction mode, the following applies, for Y in the range of X to (1 - X), inclusive:
- The variables refPicListLYIvRef, predFlagLYIvRef[ x ][ y ], mvLYIvRef[ x ][ y ], and refidxLYIvRef[ x ][ y ] are set equal to the corresponding variables of the inter- view reference picture specified by ivRefPic, RefPicListLY,, PredFlagLY[ x ][ y ], MvLY[ x ][ y ], and RefIdxLY[ x ][ y ], respectively.
- When predFlagLYIvRef[ xIvRefPb ][ ylvRefPb ] is equal to 1, the following applies for each i from 0 to num ref idx lX active minusl, inclusive:
- When PicOrderCnt( refPicListLYIvRef[ refidxLYIvRef[ xIvRefPb ][ ylvRefPb ] ]) is equal to PicOrderCnt( RefPicListLX[ i ] ) and availableFlagLXInterView is equal to 0, the following applies.
availableFlagLXInterView = 1 (H-126)
mvLXInterView = mvL YIvRef[ xIvRefPb ] [ ylvRefPb ] (H- 127)
ref!dxLX = i (H-128)
H.8.5.3.2.13 Derivation process for a view synthesis prediction merge candidate
Inputs to this process are:
- a luma location ( xCb, yCb ) of the top-left sample of the current luma coding block relative to the top-left luma sample of the current picture,
Outputs of this process are
- the availability flag availableFlagVSP whether the VSP merge candidate is available,
- the reference indices refldxLOVSP and refldxLl VSP ,
- the prediction list utilization flags predFlagLOVSP and predFlagLlVSP,
- the motion vectors mvLOVSP and mvLl VSP.
The variable availableFlagVSP is set equal to 1, the variables predFlagLOVSP and predFlagLlVSP are set equal to 0, the variables refldxLOVSP and refldxLlVSP are set equal to -1 and the variable refViewAvailableFlag is set equal to 0.
When RefViewIdx[ xCb ][ yCb ] is equal to -1, the variable availableFlagVSP is set equal to 0 and the whole decoding process specified in this subclause terminates.
- For X in the range of 0 to 1, inclusive, the following applies:
- For i in the range of 0 to NumRefPicsLX - 1, inclusive, the following applies:
- When refViewAvailableFlag is equal to 0 and Viewldx( RefPicListX[ i ] ) is equal to RefViewIdx[ xCb ][ yCb ], the following applies:
refViewAvailableFlag = 1 (H-133) predFlagLXVSP = 1 (H-134)
mvLXVSP = MvDisp[ xCb ] [ yCb ] (H- 135)
refidxLXVSP = i (H-136)
Y = l - X (H-137)
When the current slice is a B slice and refViewAvailableFlag is equal to 1, refViewAvailableFlag is set equal to 0 and the following applies:
- For i in the range of 0 to NumRefPicsLY - 1, inclusive, the following applies.
- When refViewAvailableFlag is equal to 0 and Viewldx( RefPicListY[ i ] ) is not equal to RefViewIdx[ xCb ][ yCb ] and Viewldx( RefPicListY[ i ] ) is not equal to Viewldx, the following applies:
The variables refViewAvailableFlag, predFlagLYVSP, mvLYVSP, and refidxLYVSP are derived as specified in the following:
refViewAvailableFlag = 1 (H- 138)
predFlagLYVSP = 1 (H- 139)
mvLYVSP = MvDisp[ xCb ][ yCb ] (H-140)
refidxLYVSP = i (H-141)
- When iv mv scaling flag is equal to 1, mvLYVSP is modified as specified in the following:
td = Clip3( -128, 127, Viewld - view_id_val[ RefViewIdx[ xCb ][ yCb ] ) ] (H-142) tb = Clip3( -128, 127, Viewld - Viewld( RefPicListY[ i ] ) ) (H-143)
tx = ( 16384 + ( Abs( td ) » 1 ) ) / td (H-144) distScaleFactor = Clip3( -4096, 4095, ( tb * tx + 32 ) » 6 ) (H-145) mvLYVSP[ 0 ] = Clip3( -32768, 32767, Sign2( distScaleFactor * mvLYVSP[ 0 ] )
* ( (Abs( distScaleFactor * mvLYVSP[ 0 ] ) + 127 ) » 8 ) ) (H-146) mvLYVSP[ 1 ] = Clip3( -32768, 32767, Sign2( distScaleFactor * mvLYVSP[ 1 ] )
* ( (Abs( distScaleFactor * mvLYVSP[ 1 ] ) + 127 ) » 8 ) ) (H-147)
[0013] The method described above can be used in a video encoder as well as in a video decoder. Embodiments of the method according to the present invention as described above may be implemented in various hardware, software codes, or a combination of both. For example, an embodiment of the present invention can be a circuit integrated into a video compression chip or program codes integrated into video compression software to perform the processing described herein. An embodiment of the present invention may also be program codes to be executed on a Digital Signal Processor (DSP) to perform the processing described herein. The invention may also involve a number of functions to be performed by a computer processor, a digital signal processor, a microprocessor, or field programmable gate array (FPGA). These processors can be configured to perform particular tasks according to the invention, by executing machine-readable software code or firmware code that defines the particular methods embodied by the invention. The software code or firmware codes may be developed in different programming languages and different format or style. The software code may also be compiled for different target platform. However, different code formats, styles and languages of software codes and other means of configuring code to perform the tasks in accordance with the invention will not depart from the spirit and scope of the invention.
[0014] The invention may be embodied in other specific forms without departing from its spirit or essential characteristics. The described examples are to be considered in all respects only as illustrative and not restrictive. To the contrary, it is intended to cover various modifications and similar arrangements (as would be apparent to those skilled in the art). Therefore, the scope of the appended claims should be accorded the broadest interpretation so as to encompass all such modifications and similar arrangements.

Claims

1. A method of checking the availability of inter-view motion prediction, view synthesized prediction, and advanced residual prediction for multi-view video coding or 3D video coding.
2. The method as claimed in claim 1, wherein the inter-view motion prediction, the view synthesized prediction, and the advanced residual prediction are all disabled when there is no interview picture in current reference lists of a current picture/ slice.
3. The method as claimed in claim 1, wherein the inter-view motion prediction, view synthesized prediction, and advanced residual prediction are selectively enabled or disabled for coding of each dependent texture layer and depth layer (view).
4. The method as claimed in claim 2, wherein the inter-view motion prediction, the view synthesized prediction, and the advanced residual prediction are all disabled when there is no interview picture in current reference lists of the current picture/ slice even the tools are enabled for coding of a current layer (view).
5. The method as claimed in claim 2, wherein when the inter-view motion prediction is disabled, a temporal inter-view motion vector candidate, a sub prediction block temporal inter-view motion vector candidate, and a shifted temporal inter-view motion vector candidate are not inserted into a merge candidate list.
6. The method as claimed in claim 2, wherein when the view synthesized prediction is disabled, a view synthesized prediction merge candidate is not inserted into a merge candidate list.
7. The method as claimed in claim 2, wherein the inter-view picture is a picture which has the same POC but difference view index with the current slice.
8. The method as claimed in claim 1, wherein a disparity vector is derived to indicate a corresponding block in the reference view for inter-view motion prediction, the view synthesized prediction, or the advanced residual prediction.
9. The method as claimed in claim 2, wherein no inter-view picture in current reference lists if a derived disparity vector is unavailable, invalid, or meaningless, or a reference view of the derived disparity vector is unavailable, invalid, or meaningless.
10. The method as claimed in claim 1, wherein the inter-view motion prediction, the view synthesized prediction, and the advanced residual prediction are all disabled when a derived disparity vector is not available, invalid, or meaningless.
11. The method as claimed in claim 1, wherein a flag is transmitted in the picture or slice level to indicate whether the inter-view motion prediction is enabled or not for each picture or slice.
12. The method as claimed in claim 1, wherein a flag is transmitted in the picture or slice level to indicate whether the view synthesized prediction is enabled or not for each picture or slice.
13. The method as claimed in claim 1, wherein a flag is transmitted in the picture or slice level to indicate whether the advanced residual prediction is enabled or not for each picture or slice.
14. The method as claimed in claim 11 to claim 13, the flag is the same for all slices in a same picture.
PCT/CN2014/070009 2014-01-02 2014-01-02 Existence of inter-view reference picture and availability of 3dvc coding tools Ceased WO2015100710A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
PCT/CN2014/070009 WO2015100710A1 (en) 2014-01-02 2014-01-02 Existence of inter-view reference picture and availability of 3dvc coding tools
CN201410784515.5A CN104768015B (en) 2014-01-02 2014-12-17 Video coding method and device
US14/582,115 US9621920B2 (en) 2014-01-02 2014-12-23 Method of three-dimensional and multiview video coding using a disparity vector
EP14200622.0A EP2892237A1 (en) 2014-01-02 2014-12-30 Method of three-dimensional and multiview video coding using a disparity vector

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Application Number Priority Date Filing Date Title
PCT/CN2014/070009 WO2015100710A1 (en) 2014-01-02 2014-01-02 Existence of inter-view reference picture and availability of 3dvc coding tools

Related Child Applications (2)

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