JP5722506B2 - 映像復号化装置 - Google Patents
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- 238000000034 method Methods 0.000 description 17
- 238000010586 diagram Methods 0.000 description 10
- 238000001914 filtration Methods 0.000 description 10
- 239000011159 matrix material Substances 0.000 description 7
- 238000012805 post-processing Methods 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000004891 communication Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 230000001131 transforming effect Effects 0.000 description 3
- 230000003044 adaptive effect Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000009499 grossing Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
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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
- H04N19/146—Data rate or code amount at the encoder output
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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
- H04N19/124—Quantisation
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- 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
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- H04N19/124—Quantisation
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- 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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- 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
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- H04N19/45—Decoders specially adapted therefor, e.g. video decoders which are asymmetric with respect to the encoder performing compensation of the inverse transform mismatch, e.g. Inverse Discrete Cosine Transform [IDCT] mismatch
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- 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
- H04N19/198—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 smoothing of a sequence of encoding parameters, e.g. by averaging, by choice of the maximum, minimum or median value
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- 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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Description
本発明は、例えば以下の項目を提供する。
(項目1)
現在ブロックのイントラ予測モードを復元して現在ブロック又は現在ブロックのサブブロック単位に予測ブロックを生成するイントラ予測部;
残差信号を2次元の量子化ブロックに変換する逆スキャニング部;
前記量子化ブロックを量子化パラメータを利用して逆量子化する逆量子化部;及び、
前記逆量子化ブロックを逆変換する逆変換部;を含み、
前記量子化パラメータを復元するために利用される量子化パラメータ予測子は、現在コーディングユニット(CU)の左側量子化コーディングユニットの量子化パラメータ及び上側コーディングユニットの量子化パラメータを利用して生成されることを特徴とする映像復号化装置。
(項目2)
前記量子化パラメータは、前記量子化パラメータ予測子及び受信された残余量子化パラメータを加えて生成されることを特徴とする項目1に記載の映像復号化装置。
(項目3)
前記量子化パラメータ予測子は、前記左側量子化コーディングユニットの量子化パラメータ及び前記上側コーディングユニットの量子化パラメータの平均値であることを特徴とする項目1に記載の映像復号化装置。
(項目4)
前記イントラ予測部は、現在ブロックの左側及び上側ブロックのイントラ予測モードを利用して3個のイントラ予測モードを含むMPMグループを構成し、前 記MPMグループ及び受信されたイントラ予測情報を利用して現在ブロックのイントラ予測モードを復元することを特徴とする項目1に記載の映像復号化装置。
(項目5)
現在ブロックの左側及び上側ブロックのイントラ予測モードが有効でない場合、前記MPMグループは、プレーナモード、DCモード、及び垂直モードを含むことを特徴とする項目4に記載の映像復号化装置。
(項目6)
前記イントラ予測情報は、受信されたイントラ予測モードグループ指示子と予測モードインデックスを含むことを特徴とする項目4に記載の映像復号化装置。
(項目7)
前記イントラ予測情報は、受信されたイントラ予測モードグループ指示子と予測モードインデックスを含むことを特徴とする項目4に記載の映像復号化装置。
Claims (4)
- 現在ブロックのイントラ予測モードを復元して現在ブロックまたは現在ブロックのサブブロック単位に予測ブロックを生成するイントラ予測部;
残差信号を2次元の量子化ブロックに変換する逆スキャニング部;
前記量子化ブロックを量子化パラメータを利用して逆量子化する逆量子化部;及び、
前記逆量子化部により逆量子化されたブロックを逆変換する逆変換部;を含み、
前記量子化パラメータを復元するために利用される量子化パラメータ予測子は、現在コーディングユニット(CU)の左側量子化コーディングユニットの量子化パラメータ及び上側コーディングユニットの量子化パラメータを利用して生成され、
前記予測ブロックの大きさは、変換大きさ情報によって決定され、
前記イントラ予測モードは、現在ブロックの左側及び上側ブロックの有効なイントラ予測モードを利用して決定される3個のイントラ予測モードを含むMPMグループ、受信されるイントラ予測モード指示子及び予測モードインデックスを利用して復元され、
現在ブロックの上側及び左側ブロックのイントラ予測モードのうち一つのみが有効な場合、2個のイントラ予測モードが前記MPMグループに追加されることを特徴とする映像復号化装置。 - 前記量子化パラメータは、前記量子化パラメータ予測子及び受信された残余量子化パラメータを加えて生成されることを特徴とする請求項1に記載の映像復号化装置。
- 前記量子化パラメータ予測子は、前記左側量子化コーディングユニットの量子化パラメータ及び前記上側コーディングユニットの量子化パラメータの平均値であることを特徴とする請求項1に記載の映像復号化装置。
- 現在ブロックの左側及び上側ブロックのイントラ予測モードが有効でない場合、前記MPMグループは、プレーナモード、DCモード、及び垂直モードを含むことを特徴とする請求項1に記載の映像復号化装置。
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-2011-0108460 | 2011-10-24 | ||
KR20110108456 | 2011-10-24 | ||
KR20110108460 | 2011-10-24 | ||
KR10-2011-0108456 | 2011-10-24 | ||
PCT/KR2012/003085 WO2013062198A1 (ko) | 2011-10-24 | 2012-04-20 | 영상 복호화 장치 |
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JP2015061974A Division JP5989841B2 (ja) | 2011-10-24 | 2015-03-25 | 映像復号化装置 |
JP2015061973A Division JP5989840B2 (ja) | 2011-10-24 | 2015-03-25 | 映像復号化装置 |
JP2015061971A Division JP5989838B2 (ja) | 2011-10-24 | 2015-03-25 | 映像復号化装置 |
JP2015061972A Division JP5989839B2 (ja) | 2011-10-24 | 2015-03-25 | 映像復号化装置 |
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JP2014530557A JP2014530557A (ja) | 2014-11-17 |
JP5722506B2 true JP5722506B2 (ja) | 2015-05-20 |
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JP2014531703A Active JP5722506B2 (ja) | 2011-10-24 | 2012-04-20 | 映像復号化装置 |
JP2015061972A Active JP5989839B2 (ja) | 2011-10-24 | 2015-03-25 | 映像復号化装置 |
JP2015061974A Active JP5989841B2 (ja) | 2011-10-24 | 2015-03-25 | 映像復号化装置 |
JP2015061973A Active JP5989840B2 (ja) | 2011-10-24 | 2015-03-25 | 映像復号化装置 |
JP2015061971A Active JP5989838B2 (ja) | 2011-10-24 | 2015-03-25 | 映像復号化装置 |
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JP2015061972A Active JP5989839B2 (ja) | 2011-10-24 | 2015-03-25 | 映像復号化装置 |
JP2015061974A Active JP5989841B2 (ja) | 2011-10-24 | 2015-03-25 | 映像復号化装置 |
JP2015061973A Active JP5989840B2 (ja) | 2011-10-24 | 2015-03-25 | 映像復号化装置 |
JP2015061971A Active JP5989838B2 (ja) | 2011-10-24 | 2015-03-25 | 映像復号化装置 |
Country Status (18)
Country | Link |
---|---|
US (6) | US9288488B2 (ja) |
EP (5) | EP3402200B1 (ja) |
JP (5) | JP5722506B2 (ja) |
KR (1) | KR20130045155A (ja) |
CN (6) | CN108111848B (ja) |
CY (1) | CY1121422T1 (ja) |
DK (4) | DK3402201T3 (ja) |
ES (5) | ES2789198T3 (ja) |
HR (1) | HRP20190354T1 (ja) |
HU (5) | HUE059717T2 (ja) |
LT (1) | LT2773117T (ja) |
MX (5) | MX338989B (ja) |
PL (5) | PL3402200T3 (ja) |
PT (4) | PT3402201T (ja) |
RS (1) | RS58300B1 (ja) |
SI (1) | SI2773117T1 (ja) |
TR (1) | TR201819073T4 (ja) |
WO (1) | WO2013062198A1 (ja) |
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CN109479144A (zh) * | 2016-10-13 | 2019-03-15 | 富士通株式会社 | 图像编码/解码方法、装置以及图像处理设备 |
CN116896633A (zh) * | 2016-10-28 | 2023-10-17 | 韩国电子通信研究院 | 视频编码/解码方法和设备以及存储比特流的记录介质 |
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