JP6709823B2 - ビデオ符号化のための成分間相関解除 - Google Patents
ビデオ符号化のための成分間相関解除 Download PDFInfo
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- 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
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- 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
- H04N19/124—Quantisation
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- 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
- H04N19/157—Assigned coding mode, i.e. the coding mode being predefined or preselected to be further used for selection of another element or parameter
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- 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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
- H04N19/169—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding
- H04N19/186—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
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- H—ELECTRICITY
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- H04N19/43—Hardware specially adapted for motion estimation or compensation
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- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/42—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by implementation details or hardware specially adapted for video compression or decompression, e.g. dedicated software implementation
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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
- H04N19/60—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding
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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
- H04N19/70—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by syntax aspects related to video coding, e.g. related to compression standards
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Description
本出願は、参照によりその内容が本明細書に組み込まれている、2014年9月12日に出願した米国特許仮出願第62/049,843号明細書、および2015年6月5日に出願した米国特許仮出願第62/171,542号明細書の利益を主張するものである。
ΔrC(x,y)=rC(x,y)−α×r’L(x,y) 式1
デコーダ側では彩度残差は、式2に従って輝度残差から補償され得る。
r’C(x,y)=Δr’C(x,y)+α×r’L(x,y) 式2
ΔrC(x,y)=rC(x,y)−(β×r’L(x,y))≫3 式3
r’C(x,y)=Δr’C(x,y)+(β×r’L(x,y))≫3 式4
ΔrC(x,y)=rC(x,y)−(37×r’L(x,y))≫5 式13
r’C(x,y)=Δr’C(x,y)+(37×r’L(x,y))≫5 式14
ΔrC(x,y)=rC(x,y)−(9×r’L(x,y))≫3 式15
r’C(x,y)=Δr’C(x,y)+(9×r’L(x,y))≫3 式16
Qstep=2(QP-4)/6 式19
Claims (10)
- 元の輝度成分のビット深度を有する輝度成分、元の彩度成分のビット深度を有する第1の彩度成分および第2の彩度成分を備えるビデオビットストリームを受信し、
前記輝度成分、前記第1の彩度成分、および前記第2の彩度成分が整列されたビット深度を有するように、前記輝度成分、前記第1の彩度成分、および前記第2の彩度成分にビット深度整列を実行し、
前記整列されたビット深度を有する前記輝度成分、前記第1の彩度成分、および前記第2の彩度成分に基づいて、逆色変換を実行し、
前記逆色変換の後、色成分を前記元の彩度成分のビット深度または前記元の輝度成分のビット深度に戻す
ように構成されるプロセッサを備えた、ビデオ復号デバイス。 - 前記整列されたビット深度は、前記元の輝度成分のビット深度および前記元の彩度成分のビット深度の間でより高いビット深度であり、前記プロセッサは、より低い元のビット深度を有する成分をスケーリングして、前記整列されたビット深度に一致させるようにさらに構成される、請求項1のビデオ復号デバイス。
- 前記プロセッサは、
前記元の輝度成分のビット深度および前記元の彩度成分のビット深度の間のビット深度差異を決定し、
より低い元のビット深度を有する成分の係数を前記ビット深度差異だけ左シフトする
ようにさらに構成される、請求項1のビデオ復号デバイス。 - 前記プロセッサは、
前記逆色変換の後、前記色成分の前記係数を前記ビット深度差異だけ右シフトするようにさらに構成される、請求項3のビデオ復号デバイス。 - 前記輝度成分、前記第1の彩度成分、および前記第2の彩度成分は、残差変換ブロックに関連付けられる、請求項1のビデオ復号デバイス。
- 元の輝度成分のビット深度を有する輝度成分、元の彩度成分のビット深度を有する第1の彩度成分および第2の彩度成分を備えるビデオビットストリームを受信することと、
前記輝度成分、前記第1の彩度成分、および前記第2の彩度成分が整列されたビット深度を有するように、前記輝度成分、前記第1の彩度成分、および前記第2の彩度成分にビット深度整列を実行することと、
前記整列されたビット深度を有する前記輝度成分、前記第1の彩度成分、および前記第2の彩度成分に基づいて、逆色変換を実行することと、
前記逆色変換の後、色成分を前記元の彩度成分のビット深度または前記元の輝度成分のビット深度に戻すことと
を含む、ビデオ復号方法。 - 前記整列されたビット深度は、前記元の輝度成分のビット深度および前記元の彩度成分のビット深度の間でより高いビット深度であり、前記方法は、より低い元のビット深度を有する成分をスケーリングして、前記整列されたビット深度に一致させることをさらに含む、請求項6のビデオ復号方法。
- 前記元の輝度成分のビット深度および前記元の彩度成分のビット深度の間のビット深度差異を決定することと、
より低い元のビット深度を有する成分の係数を前記ビット深度差異だけ左シフトすることと
をさらに含む、請求項6のビデオ復号方法。 - 前記色成分の前記係数は、前記ビット深度差異だけ右シフトされる、請求項8のビデオ復号方法。
- 前記輝度成分、前記第1の彩度成分、および前記第2の彩度成分は、残差変換ブロックに関連付けられる、請求項6のビデオ復号方法。
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US201462049843P | 2014-09-12 | 2014-09-12 | |
US62/049,843 | 2014-09-12 | ||
US201562171542P | 2015-06-05 | 2015-06-05 | |
US62/171,542 | 2015-06-05 |
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EP (2) | EP3544298A1 (ja) |
JP (3) | JP2017531382A (ja) |
KR (1) | KR102051193B1 (ja) |
CN (1) | CN107079157B (ja) |
BR (1) | BR112017004886A2 (ja) |
RU (1) | RU2017112309A (ja) |
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RU2017112309A (ru) | 2018-10-12 |
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BR112017004886A2 (pt) | 2017-12-05 |
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EP3544298A1 (en) | 2019-09-25 |
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