WO2013106986A1 - Methods and apparatuses of intra mode coding - Google Patents

Methods and apparatuses of intra mode coding Download PDF

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Publication number
WO2013106986A1
WO2013106986A1 PCT/CN2012/070425 CN2012070425W WO2013106986A1 WO 2013106986 A1 WO2013106986 A1 WO 2013106986A1 CN 2012070425 W CN2012070425 W CN 2012070425W WO 2013106986 A1 WO2013106986 A1 WO 2013106986A1
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intra
mode
intrapredorder
modes
intrapredmode
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PCT/CN2012/070425
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French (fr)
Inventor
Mei Guo
Xun Guo
Shaw-Min Lei
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MediaTek Singapore Pte Ltd
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MediaTek Singapore Pte Ltd
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Priority to PCT/CN2012/070425 priority Critical patent/WO2013106986A1/en
Priority to CN201280060812.4A priority patent/CN104137540B/en
Priority to NZ709833A priority patent/NZ709833B2/en
Priority to KR1020167017742A priority patent/KR101752615B1/en
Priority to PCT/CN2012/087887 priority patent/WO2013107270A1/en
Priority to US14/371,438 priority patent/US9936224B2/en
Priority to KR1020147021330A priority patent/KR101896744B1/en
Priority to NZ626459A priority patent/NZ626459B2/en
Priority to EP12866249.1A priority patent/EP2805510A4/en
Publication of WO2013106986A1 publication Critical patent/WO2013106986A1/en
Anticipated expiration legal-status Critical
Priority to US15/297,735 priority patent/US9942566B2/en
Priority to US15/900,701 priority patent/US10368095B2/en
Priority to US15/907,026 priority patent/US10178409B2/en
Priority to US16/244,029 priority patent/US10638156B2/en
Ceased legal-status Critical Current

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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
    • H04N19/102—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
    • H04N19/11—Selection of coding mode or of prediction mode among a plurality of spatial predictive coding modes
    • 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
    • H04N19/12—Selection from among a plurality of transforms or standards, e.g. selection between discrete cosine transform [DCT] and sub-band transform or selection between H.263 and H.264
    • H04N19/122—Selection of transform size, e.g. 8x8 or 2x4x8 DCT; Selection of sub-band transforms of varying structure or type
    • 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
    • H04N19/30—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using hierarchical techniques, e.g. scalability
    • H04N19/33—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using hierarchical techniques, e.g. scalability in the spatial domain
    • 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
    • H04N19/593—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving spatial prediction techniques
    • 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
    • H04N19/60—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding
    • H04N19/61—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding in combination with predictive coding

Definitions

  • the invention relates generally to video processing.
  • the present invention relates to methods and apparatuses for unified intra coding in High Efficiency Video Coding (HEVC).
  • HEVC High Efficiency Video Coding
  • HEVC High Efficiency Video Coding
  • JCT-VC Joint Collaborative Team on Video Coding
  • the prediction unit (PU) for intra coding can be 64x64, 32x32, 16x16, 8x8, and 4x4.
  • 18 intra prediction modes i.e., mode 0 ⁇ mode
  • Intra prediction angle is defined in Fig. 2.
  • intraPredMode the mode index in Fig. 1 that is denoted as intraPredMode is first mapped to intraPredOrder as shown in Table 1. Then intraPredOrder is mapped to the angle parameter intraPredAngle in Table 2.
  • intra mode coding of luma component in HM-5.0 two most probable modes are derived for each PU from the intra mode of the above PU and the intra mode of the left PU. If intraPredMode is equal to either of most probable modes, a flag prev_intra_pred_flag equal to 1 is transmitted followed by the index of the most probable modes; otherwise, rem_intra_luma_pred_mode is transmitted following a flag prev_intra_pred_flag equal to 0.
  • the binarization of rem_intra_luma_pred_mode in CABAC is given in Table 3 and Table 4.
  • rem_intra_luma_pred_mode For 8x8, 16x16, 32x32 and 64x64 PU, there are 33 remaining modes, i.e., 33 possible values of rem_intra_luma_pred_mode. Thus, one more bit is required during the transmission of rem_intra_luma_pred_mode equal to 32 or 33, compared to other remaining modes.
  • the coding of rem_intra_luma_pred_mode is non-uniform and additional operations are introduced accordingly. Besides, the intra coding for different PU sizes is not consistent.
  • Fig. 1 is a diagram illustrating the intra prediction mode directions
  • Fig. 2 is a diagram illustrating the intra prediction angle definition.
  • the PUs with different sizes adopt the same candidate intra modes. That is to say, 4x4 PU uses the same candidate intra modes as 8x8, 16x16, 32x32 and 64x64 PU.
  • intraPredMode 18
  • the mapping from intraPredMode to intraPredOrder and the mapping from intraPredOrder to intraPredAngle are defined in Table 5 and Table 6.
  • the binarization in CABAC is shown in Table 7.
  • Table 5 Proposed specification of intraPredOrder intraPredMo 0 1 2 3 4 5 6 7 8 9 1 1 1 1 1 1 1 1 1 1 1 1 1 de 0 1 2 3 4 5 6 7 intraPredOr 1 5 1 1 2 2 3 3 7 1 1 1 1 2 2 der 3 7 1 9 2 1 5 9 3 7 intraPredMo 1 1 2 2 2 2 2 2 2 2 2 2 3 3 3 3 3 3 3 3
  • the above embodiments of reducing intra prediction modes are just some examples.
  • the other intra prediction modes can also be removed to solve the problem.
  • the remaining modes can be kept as the power of 2, so that a fix length binarization can be used.
  • 5-bit fix length binarization can be used for the 32 remaining modes.
  • the methods described above can be used in a video encoder as well as in a video decoder.
  • Embodiments of the methods according to the present invention as described above may be implemented in various hardware, software codes, or a combination of both.
  • 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
  • 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. 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.

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

Description

METHODS AND APPARATUSES OF INTRA MODE CODING
TECHNICAL FIELD
The invention relates generally to video processing. In particular, the present invention relates to methods and apparatuses for unified intra coding in High Efficiency Video Coding (HEVC).
BACKGROUND
HEVC (High Efficiency Video Coding) is an advanced video coding system being developed under the Joint Collaborative Team on Video Coding (JCT-VC) group of video coding experts from ITU-T Study Group. In HEVC test model version 5.0 (HM-5.0), the prediction unit (PU) for intra coding can be 64x64, 32x32, 16x16, 8x8, and 4x4. 18 intra prediction modes, i.e., mode 0 ~ mode
17 in Fig.l, are used for 4x4 PU while 35 intra modes, i.e., mode 0 ~ mode 34 in Fig. 1, are used for 8x8, 16x16, 32x32 and 64x64 PU. Intra prediction angle is defined in Fig. 2. During intra coding in HM-5.0, the mode index in Fig. 1 that is denoted as intraPredMode is first mapped to intraPredOrder as shown in Table 1. Then intraPredOrder is mapped to the angle parameter intraPredAngle in Table 2.
Table 1. Specification of intraPredOrder
Figure imgf000002_0001
Table 2. Specification of intraPred Angle
intraPredOr 0 1 2 3 4 5 6 7 8 9 1 1 1 1 1 1 1
der 0 1 2 3 4 5 6 intraPred An -9 -5 -2 2 5 9 1 1 2 2
gle 32 26 21 17 13 3 7 1 6 intraPredOr 1 18 19 20 21 22 23 2 2 2 2 2 2 3 3 3 3
der 7 4 5 6 7 8 9 0 1 2 3 intraPred An 3 - - - - -9 -5 -2 - 2 5 9 1 1 2 2 3
gle 2 26 21 17 13 3 7 1 6 2
During intra mode coding of luma component in HM-5.0, two most probable modes are derived for each PU from the intra mode of the above PU and the intra mode of the left PU. If intraPredMode is equal to either of most probable modes, a flag prev_intra_pred_flag equal to 1 is transmitted followed by the index of the most probable modes; otherwise, rem_intra_luma_pred_mode is transmitted following a flag prev_intra_pred_flag equal to 0. The binarization of rem_intra_luma_pred_mode in CABAC is given in Table 3 and Table 4.
Table 3. Binarization for rem_intra_luma_pred_mode (4x4 PU)
Value of Bin string
rem_intra_luma_pred_mode
less than 16 Fixed Length, 0000-1111
Table 4. Binarization for rem_intra_luma_pred_mode (8x8, 16x16, 32x32, 64x64 PU)
Value of Bin string
rem_intra_luma_pred_mode
less than 31 Fixed Length, 00000-11110
31 111110
32 111111
For 8x8, 16x16, 32x32 and 64x64 PU, there are 33 remaining modes, i.e., 33 possible values of rem_intra_luma_pred_mode. Thus, one more bit is required during the transmission of rem_intra_luma_pred_mode equal to 32 or 33, compared to other remaining modes. The coding of rem_intra_luma_pred_mode is non-uniform and additional operations are introduced accordingly. Besides, the intra coding for different PU sizes is not consistent. SUMMARY
In light of the previously described problems, there exists a need for an apparatus and method, in which the unified intra coding can be achieved. PUs with different sizes share the same candidate intra modes. Some intra mode can be removed permanently to simplify and unify the coding of rem_intra_luma_pred_mode.
BRIEF DESCRIPTION OF DRAWINGS
The invention can be more fully understood by reading the subsequent detailed description amples with references made to the accompanying drawings, wherein:
Fig. 1 is a diagram illustrating the intra prediction mode directions;
Fig. 2 is a diagram illustrating the intra prediction angle definition.
DETAILED DESCRIPTION
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.
In the first embodiment, the PUs with different sizes adopt the same candidate intra modes. That is to say, 4x4 PU uses the same candidate intra modes as 8x8, 16x16, 32x32 and 64x64 PU.
In the second embodiment, the number of the candidate intra modes is reduced from 35 to 34 by removing mode 18 (intraPredMode = 18) in Fig. 1 permanently. Then the mapping from intraPredMode to intraPredOrder and the mapping from intraPredOrder to intraPredAngle are defined in Table 5 and Table 6. With 32 remaining modes, the binarization in CABAC is shown in Table 7. Table 5. Proposed specification of intraPredOrder intraPredMo 0 1 2 3 4 5 6 7 8 9 1 1 1 1 1 1 1 1 de 0 1 2 3 4 5 6 7 intraPredOr 1 5 1 1 2 2 3 3 7 1 1 1 2 2 der 3 7 1 9 2 1 5 9 3 7 intraPredMo 1 1 2 2 2 2 2 2 2 2 2 2 3 3 3 3
de 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3
intraPredOr 2 4 6 8 1 1 1 1 1 2 2 2 2 2 3 3
der 0 2 4 6 8 0 2 4 6 8 0 1
Table 6. Proposed specification of intraPredAngle intraPredOr 0 1 2 3 4 5 6 7 8 9 1 1 1 1 1 1 1 der 0 1 2 3 4 5 6 intraPredAn - - -9 -5 -2 - 2 5 9 1 1 2 2 gle 32 26 21 17 13 3 7 1 6 intraPredOr 1 18 19 20 21 22 23 2 2 2 2 2 2 3 3 3
der 7 4 5 6 7 8 9 0 1 2 intraPredAn 3 9 -5 -2 - 2 5 9 1 1 2 3
gle 2 26 21 17 13 3 7 6 2
Table 7. Proposed binarization for rem_intra_luma_pred_mode
Value of Bin string
rem_intra_luma_pred_mode
less than 32 Fixed Length, 00000-11111
In the third embodiment, the number of the candidate intra modes is reduced from 35 to 34 by removing mode 34 (intraPredMode = 34) in Fig. 1 permanently. Then the mapping from intraPredMode to intraPredOrder and the mapping from intraPredOrder to intraPredAngle are defined in Table 8 and Table 9. With 32 remaining modes, the binarization in CAB AC is shown in Table 7. Table 8. Proposed specification of intraPredOrder
intraPredMo 0 1 2 3 4 5 6 7 8 9 1 1 1 1 1 1 1 1 de 0 1 2 3 4 5 6 7 intraPredOr 1 5 1 1 2 2 3 3 7 1 1 1 2 2 der 3 7 1 9 2 1 5 9 3 7 intraPredMo 1 1 2 2 2 2 2 2 2 2 2 2 3 3 3 3
de 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3
intraPredOr 3 2 4 6 8 1 1 1 1 1 2 2 2 2 2 3
der 1 0 2 4 6 8 0 2 4 6 8 0
Table 9. Proposed specification of intraPredAngle intraPredOr 0 1 2 3 4 5 6 7 8 9 1 1 1 1 1 1 1 der 0 1 2 3 4 5 6 intraPredAn -9 -5 -2 2 5 9 1 1 2 2 gle 32 26 21 17 13 3 7 1 6 intraPredOr 1 18 19 20 21 22 23 2 2 2 2 2 2 3 3 3
der 7 4 5 6 7 8 9 0 1 2 intraPredAn 3 - - 9 -5 -2 - 2 5 9 1 1 2 3
gle 2 26 21 17 13 3 7 1 2
In the fourth embodiment, the number of the candidate intra modes is reduced from 35 to 34 by removing mode 26 (intraPredMode = 26) in Fig. 1 permanently. Then the mapping from intraPredMode to intraPredOrder and the mapping from intraPredOrder to intraPredAngle are defined in Table 10 and Table 11. With 32 remaining modes, the binarization in CAB AC is shown in Table 7.
Table 10. Proposed specification of intraPredOrder
Figure imgf000007_0001
Table 11. Proposed specification of intraPredAngle intraPredOr 0 1 2 3 4 5 6 7 8 9 1 1 1 1 1 1 1 der 0 1 2 3 4 5 6 intraPredAn -9 -5 -2 2 5 9 1 1 2 3 gle 32 26 21 17 13 3 7 1 2 intraPredOr 1 18 19 20 21 22 23 2 2 2 2 2 2 3 3 3
der 7 4 5 6 7 8 9 0 1 2 intraPredAn - - - -9 -5 -2 2 5 9 1 1 2 2 3
gle 2 21 17 13 3 7 1 6 2
6
The above embodiments of reducing intra prediction modes are just some examples. The other intra prediction modes can also be removed to solve the problem. By using this method, the remaining modes can be kept as the power of 2, so that a fix length binarization can be used. For example, 5-bit fix length binarization can be used for the 32 remaining modes.
The methods described above can be used in a video encoder as well as in a video decoder.
Embodiments of the methods 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.
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 unifying intra coding, comprising:
intra coding prediction units (PU) of different block sizes with same candidate intra modes.
2. The method as claimed in claim 1, wherein a 4x4 PU uses the same candidate intra modes as 8x8 , 16x 16, 32x32 and 64x64 PUs .
3. A method of avoiding to use different lengths for different intra prediction modes, comprising:
maintaining the number of remaining modes as the power of 2.
4. A method of unifying intra mode coding, comprising:
decreasing the number of intra modes from 35 to 34 by removing at least one intra mode permanently.
5. The method as claimed in claim 4, wherein mode 18 (intraPredMode=18) is removed permanently.
6. The method as claimed in claim 5, wherein the mapping from intraPredMode to intraPredOrder and the mapping from intraPredOrder to intraPredAngle are performed as shown in
Table 5 and Table 6.
7. The method as claimed in claim 4, wherein mode 34 (intraPredMode=34) is removed permanently.
8. The method as claimed in claim 7, wherein the mapping from intraPredMode to intraPredOrder and the mapping from intraPredOrder to intraPredAngle are performed as shown in
Table 8 and Table 9.
9. The method as claimed in claim 4, wherein mode 26 (intraPredMode=26) is removed permanently.
10. The method as claimed in claim 9, wherein the mapping from intraPredMode to intraPredOrder and the mapping from intraPredOrder to intraPredAngle are performed as shown in
Table 10 and Table 11.
11. The method as claimed in claim 3, wherein the syntax element rem_intra_luma_pred_mode is represented with fixed-length binarization.
PCT/CN2012/070425 2012-01-16 2012-01-16 Methods and apparatuses of intra mode coding Ceased WO2013106986A1 (en)

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PCT/CN2012/070425 WO2013106986A1 (en) 2012-01-16 2012-01-16 Methods and apparatuses of intra mode coding
NZ626459A NZ626459B2 (en) 2012-01-16 2012-12-28 Method and apparatus for intra mode coding
EP12866249.1A EP2805510A4 (en) 2012-01-16 2012-12-28 METHOD AND APPARATUS FOR INTRA MODE CODING
KR1020167017742A KR101752615B1 (en) 2012-01-16 2012-12-28 Method and apparatus for intra mode coding
PCT/CN2012/087887 WO2013107270A1 (en) 2012-01-16 2012-12-28 Method and apparatus for intra mode coding
US14/371,438 US9936224B2 (en) 2012-01-16 2012-12-28 Method and apparatus for intra mode coding
KR1020147021330A KR101896744B1 (en) 2012-01-16 2012-12-28 Method and apparatus for intra mode coding
CN201280060812.4A CN104137540B (en) 2012-01-16 2012-12-28 Intra-mode coding method and device for block
NZ709833A NZ709833B2 (en) 2012-01-16 2012-12-28 Method and apparatus for intra mode coding
US15/297,735 US9942566B2 (en) 2012-01-16 2016-10-19 Method and apparatus for intra mode coding
US15/900,701 US10368095B2 (en) 2012-01-16 2018-02-20 Method and apparatus for intra mode coding
US15/907,026 US10178409B2 (en) 2012-01-16 2018-02-27 Method and apparatus for intra mode coding
US16/244,029 US10638156B2 (en) 2012-01-16 2019-01-09 Method and apparatus for intra mode coding

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Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013106986A1 (en) 2012-01-16 2013-07-25 Mediatek Singapore Pte. Ltd. Methods and apparatuses of intra mode coding
CN105516728B (en) * 2015-12-15 2019-06-28 华中科技大学 A parallel intra-frame prediction method for 8x8 sub-macroblocks in H.265/HEVC
KR102398612B1 (en) 2016-12-28 2022-05-17 엘지전자 주식회사 Intra prediction mode-based image processing method and apparatus therefor
US10623738B2 (en) 2017-04-06 2020-04-14 Futurewei Technologies, Inc. Noise suppression filter
US10582195B2 (en) 2017-06-02 2020-03-03 Futurewei Technologies, Inc. Intra prediction using unequal weight planar prediction
US11272207B2 (en) 2017-06-12 2022-03-08 Futurewei Technologies, Inc. Selection and signaling of motion vector (MV) precisions
US10477237B2 (en) 2017-06-28 2019-11-12 Futurewei Technologies, Inc. Decoder side motion vector refinement in video coding
US11019339B2 (en) 2017-07-12 2021-05-25 Futurewei Technologies, Inc. Fractional quantization parameter offset in video compression
US10666943B2 (en) 2017-09-15 2020-05-26 Futurewei Technologies, Inc. Block partition structure in video compression
US10841794B2 (en) 2017-09-18 2020-11-17 Futurewei Technologies, Inc. Adaptive motion vector resolution
US10595019B2 (en) 2017-09-20 2020-03-17 Futurewei Technologies, Inc. Noise suppression filter parameter estimation for video coding
US10609384B2 (en) 2017-09-21 2020-03-31 Futurewei Technologies, Inc. Restriction on sub-block size derivation for affine inter prediction
KR102424088B1 (en) 2017-10-16 2022-07-22 후아웨이 테크놀러지 컴퍼니 리미티드 Spatial Transformation for Video Coding
US10652534B2 (en) * 2018-03-08 2020-05-12 Tencent America LLC Methods and apparatus for directional intra prediction in video compression
EP3777144A4 (en) * 2018-03-30 2021-12-22 Hulu, LLC SIGNALING OF INTRA PREDICTION MODE FOR VIDEO ENCODING
WO2019216605A1 (en) * 2018-05-07 2019-11-14 엘지전자 주식회사 Image coding method according to intra prediction using adaptively derived mpm list, and apparatus therefor
WO2020013480A1 (en) 2018-07-11 2020-01-16 엘지전자 주식회사 Method for coding intra-prediction mode, and device for same
CN112567741A (en) * 2018-07-13 2021-03-26 Lg电子株式会社 Image decoding method and apparatus using intra prediction information in image coding system
WO2020017786A1 (en) * 2018-07-14 2020-01-23 엘지전자 주식회사 Method for decoding image on basis of image information including intra prediction information in image coding system, and apparatus therefor
KR102637083B1 (en) 2018-07-14 2024-02-15 엘지전자 주식회사 Image decoding method and apparatus relying on intra prediction in image coding system
WO2020040439A1 (en) * 2018-08-21 2020-02-27 엘지전자 주식회사 Intra prediction method and device in image coding system
WO2020053394A1 (en) * 2018-09-13 2020-03-19 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Affine linear weighted intra predictions
EP3709644A1 (en) * 2019-03-12 2020-09-16 Ateme Method for image processing and apparatus for implementing the same
KR102822624B1 (en) * 2018-10-05 2025-06-18 엘지전자 주식회사 Intra prediction-based image coding method and apparatus using mpm list
US11109023B2 (en) * 2018-11-27 2021-08-31 Tencent America LLC Intra mode selection in intra prediction
TWI737364B (en) * 2019-06-28 2021-08-21 聯發科技股份有限公司 Method and apparatus of matrix based intra prediction in image and video processing

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1809168A (en) * 2005-01-21 2006-07-26 精工爱普生株式会社 Prediction intra-mode selection in an encoder
CN101129072A (en) * 2005-01-12 2008-02-20 诺基亚公司 Method and system for inter-layer prediction mode coding in scalable video coding

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8311120B2 (en) 2006-12-22 2012-11-13 Qualcomm Incorporated Coding mode selection using information of other coding modes
KR101136771B1 (en) * 2006-12-22 2012-04-20 퀄컴 인코포레이티드 Coding mode selection using information of other coding modes
KR101365575B1 (en) 2007-02-05 2014-02-25 삼성전자주식회사 Method and apparatus for encoding and decoding based on inter prediction
CN101500161B (en) * 2008-01-31 2012-03-21 华为技术有限公司 Inter-frame prediction method and apparatus based on adaptive block transformation
US20110317757A1 (en) * 2010-06-25 2011-12-29 Qualcomm Incorporated Intra prediction mode signaling for finer spatial prediction directions
US9025661B2 (en) * 2010-10-01 2015-05-05 Qualcomm Incorporated Indicating intra-prediction mode selection for video coding
US8913662B2 (en) * 2011-01-06 2014-12-16 Qualcomm Incorporated Indicating intra-prediction mode selection for video coding using CABAC
US9787982B2 (en) * 2011-09-12 2017-10-10 Qualcomm Incorporated Non-square transform units and prediction units in video coding
US9154796B2 (en) * 2011-11-04 2015-10-06 Qualcomm Incorporated Intra-mode video coding
KR101827939B1 (en) 2011-12-13 2018-02-12 주식회사 스카이미디어테크 Method of adaptive intra prediction mode encoding and apparatus for the same, and method of decoding and apparatus for the same
WO2013106986A1 (en) 2012-01-16 2013-07-25 Mediatek Singapore Pte. Ltd. Methods and apparatuses of intra mode coding

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101129072A (en) * 2005-01-12 2008-02-20 诺基亚公司 Method and system for inter-layer prediction mode coding in scalable video coding
CN1809168A (en) * 2005-01-21 2006-07-26 精工爱普生株式会社 Prediction intra-mode selection in an encoder

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
KEN MCCANN ET AL.: "HM4: High Efficiency Video Coding (HEVC) Test Model 4 Encoder Description", JCT-VC OF ITU-T SG16 WP3 AND ISO/IEC JTC1/SC29/WG11 6TH MEETING: TORINO, JCTVC-F802, 14 July 2011 (2011-07-14) - 22 July 2011 (2011-07-22), TORINO, XP030009799 *

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