JP2016165126A - 映像符号化装置 - Google Patents
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Abstract
【解決手段】動画符号化装置のイントラ予測部は、現在ブロックの利用可能な参照画素を用いて、利用不可能な位置の参照画素を生成し、イントラ予測モード及び前記現在ブロックのサイズ情報に基づいて、現在ブロックに隣接している参照画素を適応的にフィルタリングして、イントラ予測モードによって現在ブロックの予測ブロックを生成する。したがって、原本映像に近い予測ブロックを生成することができ、映像圧縮率を高めうる。
【選択図】図1
Description
Claims (2)
- 残差ブロックを変換して変換ブロックを生成する変換部と、
量子化ステップサイズを用いて前記変換ブロックを量子化して量子化変換ブロックを生成する量子化部と、
前記量子化変換ブロックをスキャンして1次元の量子化係数を生成するスキャニング部と、
複数のイントラ予測モードの中から選択されたイントラ予測モードによって予測ブロックを生成するイントラ予測部と、
前記1次元の量子化係数をエントロピー符号化するエントロピー符号化部と、を備え、
前記量子化変換ブロックのサイズが8×8ならば、前記量子化変換ブロックは複数のサブセットに分割され、前記複数のサブセットは、前記選択されたイントラ予測モードによって定められるスキャンパターンを用いてスキャンされ、
前記それぞれのサブセット内の係数をスキャンするスキャンパターンと、前記複数のサブセットをスキャンするスキャンパターンとは同一であり、
前記選択されたイントラ予測モードが、水平モードであれば、前記スキャンパターンは垂直スキャンで、前記選択されたイントラ予測モードが、垂直モードであれば、前記スキャンパターンは水平スキャンで、
前記複数のサブセットは前記選択されたイントラ予測モードによって定められるスキャンパターンによって逆方向にスキャンされ、
前記イントラ予測部は、
現在ブロックの利用可能な参照画素を用いて、利用不可能な位置の参照画素を生成する参照画素生成部と、
前記イントラ予測モード及び前記現在ブロックのサイズ情報に基づいて、前記現在ブロックに隣接している参照画素を適応的にフィルタリングする参照画素フィルタリング部と、
前記イントラ予測モードによって現在ブロックの予測ブロックを生成する予測ブロック生成部と、を備える映像符号化装置。 - 前記選択されたイントラ予測モードが、前記水平モードに隣接した事前に設定された個数のイントラ予測モードのひとつなら、前記スキャンパターンは垂直スキャンであることを特徴とする請求項1に記載の映像符号化装置。
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KR20100074462 | 2010-07-31 | ||
KR10-2010-0074462 | 2010-07-31 | ||
KR10-2011-0062603 | 2011-06-28 | ||
KR1020110062603A KR101373814B1 (ko) | 2010-07-31 | 2011-06-28 | 예측 블록 생성 장치 |
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JP2013523089A Division JP5928957B2 (ja) | 2010-07-31 | 2011-07-29 | 映像符号化装置 |
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JP6149137B2 JP6149137B2 (ja) | 2017-06-14 |
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JP2013523089A Active JP5928957B2 (ja) | 2010-07-31 | 2011-07-29 | 映像符号化装置 |
JP2016082417A Expired - Fee Related JP6084734B2 (ja) | 2010-07-31 | 2016-04-15 | 映像復号化装置 |
JP2016082412A Active JP6149137B2 (ja) | 2010-07-31 | 2016-04-15 | 映像符号化装置 |
JP2016082415A Active JP6084732B2 (ja) | 2010-07-31 | 2016-04-15 | 映像復号化装置 |
JP2016082418A Expired - Fee Related JP6084735B2 (ja) | 2010-07-31 | 2016-04-15 | 映像復号化装置 |
JP2016082413A Active JP6084731B2 (ja) | 2010-07-31 | 2016-04-15 | 映像符号化装置 |
JP2016082414A Active JP6149138B2 (ja) | 2010-07-31 | 2016-04-15 | 映像符号化装置 |
JP2016082416A Expired - Fee Related JP6084733B2 (ja) | 2010-07-31 | 2016-04-15 | 映像復号化装置 |
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JP2013523089A Active JP5928957B2 (ja) | 2010-07-31 | 2011-07-29 | 映像符号化装置 |
JP2016082417A Expired - Fee Related JP6084734B2 (ja) | 2010-07-31 | 2016-04-15 | 映像復号化装置 |
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JP2016082413A Active JP6084731B2 (ja) | 2010-07-31 | 2016-04-15 | 映像符号化装置 |
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US (11) | US9319715B2 (ja) |
EP (7) | EP3197161B1 (ja) |
JP (8) | JP5928957B2 (ja) |
KR (1) | KR101373814B1 (ja) |
CN (11) | CN104602003B (ja) |
CY (5) | CY1119258T1 (ja) |
DK (5) | DK3211898T3 (ja) |
ES (6) | ES2700621T3 (ja) |
HR (5) | HRP20171277T1 (ja) |
HU (5) | HUE041268T2 (ja) |
LT (5) | LT3214838T (ja) |
PL (6) | PL3211899T3 (ja) |
PT (5) | PT2988501T (ja) |
RS (5) | RS58060B1 (ja) |
SI (5) | SI3197160T1 (ja) |
SM (5) | SMT201700337T1 (ja) |
TR (1) | TR201815076T4 (ja) |
WO (1) | WO2012018198A2 (ja) |
Cited By (1)
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JP2016165128A (ja) * | 2010-07-31 | 2016-09-08 | エム アンド ケー ホールディングス インコーポレイテッド | 映像符号化装置 |
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