JP6138885B2 - マージリスト構築方法 - Google Patents
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Description
一実施形態において、例えば、以下の項目が提供される。
(項目1)
マージリストを構築する方法において、
空間マージ候補の利用可能性を検査するステップ;
時間マージ候補の利用可能性を検査するステップ;
利用可能な空間及び時間マージ候補を利用してマージリストを構築するステップ;及び、
前記利用可能な空間及び時間マージ候補の数が予め決められた数より小さい場合、一つ以上の候補を追加するステップ;を含み、
前記空間マージ候補は、空間マージ候補ブロックの動き情報であり、前記空間マージ候補ブロックは、現在ブロックの左側ブロック、上側ブロック、右上側ブロック、左下側ブロック又は左上側ブロックであり、
現在ブロックが非対称分割により分割された2番目の予測ユニットの場合、前記非対称分割に分割された1番目の予測ユニットは、利用可能でないと設定されることを特徴とする方法。
(項目2)
現在予測ユニットのサイズが(3/2)N×2Nの場合、左側空間マージ候補が利用可能でないと設定されることを特徴とする項目1に記載の方法。
(項目3)
前記左側空間マージ候補は、現在ブロックの左側ブロックの動き情報であることを特徴とする項目2に記載の方法
(項目4)
上側空間マージ候補が前記左側空間マージ候補と同じ動き情報を有する場合、前記上側空間マージ候補は、利用可能でないと設定されることを特徴とする項目2に記載の方法。
(項目5)
現在予測ユニットのサイズは、分割モード及び現在コーディングユニットのサイズに基づいて決定されることを特徴とする項目1に記載の方法。
(項目6)
前記コーディングユニットが許容可能な最小サイズを有する場合、前記非対称分割が許容されないことを特徴とする項目1に記載の方法
(項目7)
前記左側ブロック、前記上側ブロック、前記右上側ブロック及び前記左下側ブロックのうち少なくとも一つが利用可能でない場合、前記左上側ブロックがマージ候補ブロックとして設定されることを特徴とする項目1に記載の方法。
Claims (7)
- マージモードを利用して映像を復号化する方法であって、
利用可能な空間マージ候補及び時間マージ候補を利用してマージ候補リストを構成するステップ;
前記マージ候補リストを利用して誘導した動き情報に基づいて予測ブロックを生成するステップ;
量子化係数成分から生成された量子化ブロックを量子化ユニット単位で生成された量子化パラメータを利用して逆量子化するステップ;
前記逆量子化された量子化ブロックを逆変換して残差ブロックを生成するステップ;及び
前記予測ブロックと前記残差ブロックを利用して復元ブロックを誘導するステップ;を含み、
前記空間マージ候補は、空間マージ候補ブロックの動き情報であり、前記空間マージ候補ブロックは、現在ブロックの左側ブロック、上側ブロック、右上側ブロック、左下側ブロックまたは左上側ブロックであり、
前記時間マージ候補の参照ピクチャインデックスは、0に設定され、
前記量子化パラメータは、差分量子化パラメータと量子化パラメータ予測子を利用して生成され、
左側及び上側量子化パラメータが両方とも利用可能な場合、前記量子化パラメータ予測子は、前記左側及び上側量子化パラメータを利用して生成され、
前記左側及び上側量子化パラメータのうち一つのみが利用可能な場合、前記量子化パラメータ予測子は、前記利用可能な一つの量子化パラメータと以前量子化パラメータを利用して生成され、
利用可能な左側量子化パラメータと上側量子化パラメータが存在しない場合、前記量子化パラメータ予測子は、前記以前量子化パラメータとして設定されることを特徴とする方法。 - 前記量子化ユニットは、少なくとも一つのコーディングユニットを含み、前記量子化ユニットの大きさは、ピクチャ単位で決定されることを特徴とする請求項1に記載の方法。
- 前記差分量子化パラメータは、前記量子化ユニット毎に含まれることを特徴とする請求項1に記載の方法。
- 前記量子化パラメータ予測子は、前記量子化ユニット毎に生成されることを特徴とする請求項1に記載の方法。
- 前記マージ候補リストを構成するステップは、前記利用可能な空間マージ候補及び時間マージ候補の個数が予め決められた個数より小さい場合、一つ以上の候補をマージ候補として追加するステップをさらに含むことを特徴とする請求項1に記載の方法。
- 現在コーディングユニットが許容可能な最小サイズを有する場合、非対称分割が許容されないことを特徴とする請求項1に記載の方法。
- 前記時間マージ候補の動きベクトルは、時間マージ候補ピクチャ内の時間マージ候補ブロックの動きベクトルであり、前記時間マージ候補ピクチャは、スライス内で同じであることを特徴とする請求項1に記載の方法。
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KR10-2011-0115219 | 2011-11-07 | ||
KR1020110115219A KR20130050406A (ko) | 2011-11-07 | 2011-11-07 | 머지 모드에서의 움직임 정보 생성 방법 |
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JP2014539242A Division JP5823628B2 (ja) | 2011-11-07 | 2012-11-07 | マージリスト構築方法 |
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JP6138885B2 true JP6138885B2 (ja) | 2017-05-31 |
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JP2014539242A Active JP5823628B2 (ja) | 2011-11-07 | 2012-11-07 | マージリスト構築方法 |
JP2015199314A Active JP6138885B2 (ja) | 2011-11-07 | 2015-10-07 | マージリスト構築方法 |
JP2015199312A Active JP6138883B2 (ja) | 2011-11-07 | 2015-10-07 | マージモードを利用して映像を復号化する装置 |
JP2015199313A Active JP6138884B2 (ja) | 2011-11-07 | 2015-10-07 | マージリスト構築方法 |
JP2015199311A Active JP6140237B2 (ja) | 2011-11-07 | 2015-10-07 | マージリスト構築方法 |
JP2017090267A Active JP6291613B2 (ja) | 2011-11-07 | 2017-04-28 | 映像符号化装置 |
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JP2015199312A Active JP6138883B2 (ja) | 2011-11-07 | 2015-10-07 | マージモードを利用して映像を復号化する装置 |
JP2015199313A Active JP6138884B2 (ja) | 2011-11-07 | 2015-10-07 | マージリスト構築方法 |
JP2015199311A Active JP6140237B2 (ja) | 2011-11-07 | 2015-10-07 | マージリスト構築方法 |
JP2017090267A Active JP6291613B2 (ja) | 2011-11-07 | 2017-04-28 | 映像符号化装置 |
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US (7) | US8917772B2 (ja) |
EP (6) | EP3829174B1 (ja) |
JP (6) | JP5823628B2 (ja) |
KR (5) | KR20130050406A (ja) |
CN (7) | CN108347610B (ja) |
BR (5) | BR122020013719B1 (ja) |
CY (1) | CY1123872T1 (ja) |
DK (5) | DK3829172T3 (ja) |
ES (5) | ES2951960T3 (ja) |
HR (1) | HRP20210659T1 (ja) |
HU (5) | HUE062196T2 (ja) |
IN (1) | IN2014CN03913A (ja) |
LT (1) | LT2752006T (ja) |
MX (6) | MX336816B (ja) |
PL (5) | PL3829172T3 (ja) |
PT (5) | PT2752006T (ja) |
RS (1) | RS61740B1 (ja) |
SI (1) | SI2752006T1 (ja) |
TW (1) | TWI537881B (ja) |
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