JP6144776B2 - 映像エンコーディング/デコーディング方法及びこれを用いる装置 - Google Patents
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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
- H04N19/134—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
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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
- H04N19/102—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
- H04N19/119—Adaptive subdivision aspects, e.g. subdivision of a picture into rectangular or non-rectangular coding blocks
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- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
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- 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
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- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
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- H04N19/124—Quantisation
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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
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- 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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- H04N19/10—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
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- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
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- 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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Description
Claims (3)
- デコーディング装置が映像をデコーディングする方法であって、
輝度成分サンプリングに対応する色相成分サンプリングを指示する色相形式情報に基づいて輝度成分ブロックに対応する色相成分ブロックを誘導するステップと、
第1ブロックが変換を遂行するための第2ブロックに分割されたか否かを示す分割情報に基づいて前記色相成分ブロックを変換を遂行するための色相成分に対する変換ブロックに分割するステップと、
前記色相成分に対する変換ブロックに基づいて逆変換及び逆量子化のうち、少なくとも1つを遂行して前記色相成分に対する変換ブロックのレジデュアル情報を獲得するステップと、
前記分割情報が前記第1ブロックが変換を遂行するための前記第2ブロックに分割されないことと指示する場合、N×2Nサイズの色相成分ブロックに対する変換係数情報を獲得するステップと、
を含み、
前記色相成分ブロックを誘導するステップでは、前記色相形式情報が4:2:2色相形式を指示し、前記輝度成分ブロックが2N×2Nサイズであれば、前記色相成分ブロックはN×2Nサイズに誘導され、
前記変換係数情報を獲得するステップは、
前記N×2Nサイズの色相成分ブロックに含まれたN×Nサイズの第1色相成分ブロックに対する変換係数情報を獲得するステップと、
前記N×2Nサイズの色相成分ブロックに含まれたN×Nサイズの第2色相成分ブロックに対する変換係数情報を獲得するステップと、
を含み、
N×Nサイズの変換ブロックは、前記N×2Nサイズの色相成分ブロックにN×2Nサイズのダミーブロックを付加して構成された2N×2Nサイズの色相成分ブロックから分割されたN×Nサイズの4個の変換ブロックの1つであり、
前記N×Nサイズの変換ブロックの分割深さは、前記2N×2Nサイズの色相成分ブロックの分割深さより1レベル大きく、
前記ダミーブロックは0値を有するブロックであり、
前記ダミーブロックに対応するN×Nサイズの変換ブロックにおいて、逆変換は遂行されない、映像デコーディング方法。 - 前記色相成分ブロックを前記色相成分に対する変換ブロックに分割するステップでは、前記分割情報が前記第1ブロックが変換を遂行するための前記第2ブロックに分割されたことと指示する場合、前記N×2Nサイズの色相成分ブロックはN×Nサイズの第1変換ブロック及び第2変換ブロックに分割される、請求項1に記載の映像デコーディング方法。
- 前記色相成分ブロックを前記色相成分に対する変換ブロックに分割するステップでは、
前記第1変換ブロックは、前記第1変換ブロックに対する前記分割情報に基づいてクワッドツリー形式で4個の変換ブロックに分割され、
前記第2変換ブロックは、前記第2変換ブロックに対する前記分割情報に基づいてクワッドツリー形式で4個の変換ブロックに分割される、請求項2に記載の映像デコーディング方法。
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
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US201261737828P | 2012-12-17 | 2012-12-17 | |
US61/737,828 | 2012-12-17 | ||
US201361752977P | 2013-01-16 | 2013-01-16 | |
US61/752,977 | 2013-01-16 | ||
PCT/KR2013/011755 WO2014098456A2 (ko) | 2012-12-17 | 2013-12-17 | 영상 인코딩/디코딩 방법 및 이를 이용하는 장치 |
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JP2016506154A JP2016506154A (ja) | 2016-02-25 |
JP6144776B2 true JP6144776B2 (ja) | 2017-06-07 |
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JP2015549252A Active JP6144776B2 (ja) | 2012-12-17 | 2013-12-17 | 映像エンコーディング/デコーディング方法及びこれを用いる装置 |
Country Status (6)
Country | Link |
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US (1) | US9743091B2 (ja) |
EP (1) | EP2934012B1 (ja) |
JP (1) | JP6144776B2 (ja) |
KR (1) | KR102267518B1 (ja) |
CN (1) | CN104885463B (ja) |
WO (1) | WO2014098456A2 (ja) |
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- 2013-12-17 WO PCT/KR2013/011755 patent/WO2014098456A2/ko active Application Filing
- 2013-12-17 JP JP2015549252A patent/JP6144776B2/ja active Active
- 2013-12-17 CN CN201380069329.7A patent/CN104885463B/zh not_active Expired - Fee Related
- 2013-12-17 EP EP13864810.0A patent/EP2934012B1/en active Active
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Publication number | Publication date |
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US9743091B2 (en) | 2017-08-22 |
EP2934012B1 (en) | 2020-09-02 |
WO2014098456A2 (ko) | 2014-06-26 |
KR20150096375A (ko) | 2015-08-24 |
EP2934012A4 (en) | 2016-08-24 |
CN104885463A (zh) | 2015-09-02 |
KR102267518B1 (ko) | 2021-06-22 |
EP2934012A2 (en) | 2015-10-21 |
US20150373332A1 (en) | 2015-12-24 |
JP2016506154A (ja) | 2016-02-25 |
CN104885463B (zh) | 2018-07-31 |
WO2014098456A3 (ko) | 2014-10-23 |
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