JP2019165486A - イントラブロックコピー探索 - Google Patents
イントラブロックコピー探索 Download PDFInfo
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- JP2019165486A JP2019165486A JP2019090956A JP2019090956A JP2019165486A JP 2019165486 A JP2019165486 A JP 2019165486A JP 2019090956 A JP2019090956 A JP 2019090956A JP 2019090956 A JP2019090956 A JP 2019090956A JP 2019165486 A JP2019165486 A JP 2019165486A
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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
- H04N19/105—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
- H04N19/169—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
- H04N19/10—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
- H04N19/186—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 a colour or a chrominance component
-
- 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
- H04N19/189—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the adaptation method, adaptation tool or adaptation type used for the adaptive coding
- H04N19/196—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the adaptation method, adaptation tool or adaptation type used for the adaptive coding being specially adapted for the computation of encoding parameters, e.g. by averaging previously computed encoding parameters
- H04N19/197—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the adaptation method, adaptation tool or adaptation type used for the adaptive coding being specially adapted for the computation of encoding parameters, e.g. by averaging previously computed encoding parameters including determination of the initial value of an encoding parameter
-
- 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
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Computing Systems (AREA)
- Theoretical Computer Science (AREA)
- Compression Or Coding Systems Of Tv Signals (AREA)
Abstract
Description
BV.x=BlK_Pos[K].x−Curr_Blk_Pos.x (1)
BV.y=BlK_Pos[K].y−Curr_Blk_Pos.y (2)
上式で、BlK_Pos[K]は、K番目のブロックの左上隅の(x,y)座標であってよく、Curr_Blk_Posは、カレントブロックの左上隅の(x,y)座標であってもよい。
H=(MSB(DC0,3)<<13)+(MSB(DC1,3)<<10)+(MSB(DC2,3)<<7)+(MSB(DC3,3)<<4)+MSB(Grad,4) (3)
上記式で、(MSB(X,n)は、Xのn個の最上位ビットを抽出する関数であってもよい。
grad(p)=(|L(x,y)−L(x−1,y)|+|L(x,y)−L(x,y−1)|)/2 (6)
SI(x,y)=SI(x,y−1)+SI(x−1,y)−SI(x−1,y−1)+I(x,y) (7)
sum(I(x,y)|(x,y)∈B)=SI(XBR,YBR)+SI(XTL−1,YTL−1)−SI(XTL−1,YBR)−SI(XBR,YTL−1) (8)
Claims (3)
- ビデオデータを符号化する方法であって、
前記ビデオデータの符号化ユニットを符号化するための第1の最良モードを識別するステップと、
前記第1の最良モードと関連付けられた量子化された残差値の第1の組を識別するステップと、
量子化された残差値の前記第1の組が非ゼロ値を含むかどうか、および前記第1の最良モードがイントラブロックコピー(IntraBC)モードまたはスキップモードであるかどうかを決定するステップと、
量子化された残差値の前記第1の組が非ゼロ値を含み、または前記第1の最良モードが前記IntraBCモードでも前記スキップモードでもないと決定することに基づいて、
前記符号化ユニットの幅が符号化幅閾値以下であるかどうかを決定するステップと、
前記符号化ユニットの前記幅が前記符号化幅閾値以下であることを条件に、第1の予測子ベース探索を介して、前記符号化ユニットに対して2N×2N IntraBCモード検査を実行するステップと
を備えたことを特徴とする方法。 - 前記符号化ユニットを符号化するための第2の最良モードを識別するステップと、
前記第2の最良モードと関連付けられた量子化された残差値の第2の組を識別するステップと、
量子化された残差値の前記第2の組が非ゼロ値を含むかどうか、および前記第2の最良モードが前記IntraBCモードまたは前記スキップモードであるかどうかを決定するステップと、
量子化された残差値の前記第2の組が非ゼロ値を含み、または前記第2の最良モードが前記IntraBCモードでも前記スキップモードでもないと決定することに基づいて、
前記符号化ユニットの前記幅が前記符号化幅閾値以下であることを条件に、第2の予測子ベース探索を介して、前記符号化ユニットに対して2N×2N IntraBCモード検査を実行するステップと
をさらに備えたことを特徴とする請求項1に記載の方法。 - 前記符号化ユニットを符号化するための前記第2の最良モードおよび量子化された残差値の前記第2の組は、前記第1の予測子ベース探索をすると識別されることを特徴とする請求項2に記載の方法。
Applications Claiming Priority (2)
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US201562109548P | 2015-01-29 | 2015-01-29 | |
US62/109,548 | 2015-01-29 |
Related Parent Applications (1)
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JP2017540619A Division JP6527949B2 (ja) | 2015-01-29 | 2016-01-28 | イントラブロックコピー探索 |
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JP2019165486A true JP2019165486A (ja) | 2019-09-26 |
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JP2017540619A Active JP6527949B2 (ja) | 2015-01-29 | 2016-01-28 | イントラブロックコピー探索 |
JP2019090956A Ceased JP2019165486A (ja) | 2015-01-29 | 2019-05-13 | イントラブロックコピー探索 |
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JP2017540619A Active JP6527949B2 (ja) | 2015-01-29 | 2016-01-28 | イントラブロックコピー探索 |
Country Status (7)
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US (2) | US10516882B2 (ja) |
EP (1) | EP3251350B1 (ja) |
JP (2) | JP6527949B2 (ja) |
KR (1) | KR102131142B1 (ja) |
CN (1) | CN107409220B (ja) |
TW (1) | TWI678102B (ja) |
WO (1) | WO2016123398A2 (ja) |
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-
2016
- 2016-01-28 WO PCT/US2016/015457 patent/WO2016123398A2/en active Application Filing
- 2016-01-28 JP JP2017540619A patent/JP6527949B2/ja active Active
- 2016-01-28 EP EP16715133.1A patent/EP3251350B1/en active Active
- 2016-01-28 US US15/546,764 patent/US10516882B2/en active Active
- 2016-01-28 CN CN201680007929.4A patent/CN107409220B/zh active Active
- 2016-01-28 KR KR1020177023921A patent/KR102131142B1/ko active IP Right Grant
- 2016-01-29 TW TW105102851A patent/TWI678102B/zh active
-
2019
- 2019-05-13 JP JP2019090956A patent/JP2019165486A/ja not_active Ceased
- 2019-11-07 US US16/676,708 patent/US20200077087A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
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EP3251350B1 (en) | 2023-04-19 |
TW201637449A (zh) | 2016-10-16 |
JP6527949B2 (ja) | 2019-06-12 |
WO2016123398A2 (en) | 2016-08-04 |
CN107409220A (zh) | 2017-11-28 |
CN107409220B (zh) | 2020-07-24 |
US10516882B2 (en) | 2019-12-24 |
US20180014011A1 (en) | 2018-01-11 |
WO2016123398A3 (en) | 2016-09-22 |
TWI678102B (zh) | 2019-11-21 |
KR102131142B1 (ko) | 2020-07-07 |
JP2018509059A (ja) | 2018-03-29 |
EP3251350A2 (en) | 2017-12-06 |
US20200077087A1 (en) | 2020-03-05 |
KR20170108110A (ko) | 2017-09-26 |
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