JP4840853B2 - ビデオ復号化における参照ピクチャの適応重み付け - Google Patents
ビデオ復号化における参照ピクチャの適応重み付け Download PDFInfo
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Description
Pred=〔(P0)(Pred0)〕+〔(P1)(Pred1)〕+D;
であり、P0とP1とは重み付け係数であり、Pred0とPred1とは、リスト0とリスト1との各々についての参照ピクチャ予測であり、Dはオフセットである。
Pred= W0 * Pred0 + D0 (1);
として形成され、W0はリスト0参照ピクチャに関連した重み付け係数であり、D0はリスト0参照ピクチャに関連したオフセットであり、Pred0はリスト0参照ピクチャからの動き補償予測ブロックである。
Pred = W1 * Pred1 + D1 (2);
として形成され、W1はリスト1参照ピクチャと関連した重み付け係数であり、D0はリスト1参照ピクチャと関連したオフセットであり、Pred1はリスト1参照ピクチャからの動き補償予測ブロックである。
Pred=(P0*Pred0+D0+P1*Pred1+D1)/2 (3);
として形成する。
Claims (3)
- 複数の画像ブロックを有するピクチャのビデオ・データを復号化するビデオ復号器であって、
参照ピクチャ・インデックスを受信する参照ピクチャ重み付け係数装置であって、画像ブロックを予測するための特定の参照ピクチャを表し、前記画像ブロックのために受信した参照ピクチャ・インデックスから、重み付け係数を決定する、前記参照ピクチャ重み付け係数装置と、
動き補償参照ピクチャ予測子を生成する動き補償器と、
前記重み付け係数を前記動き補償参照ピクチャ予測子に適用する乗算器と、
を備える、前記ビデオ復号器。 - 複数の画像ブロックを有するピクチャのビデオ・データを復号化する方法であって:
現在の画像ブロックのデータとともに、参照ピクチャ・インデックスを受信する工程であって、画像ブロックを予測するための特定の参照ピクチャを表し、前記画像ブロックのために受信した参照ピクチャ・インデックスから、重み付け係数を決定する、前記工程;
前記受信された参照ピクチャ・インデックスに対応する前記示された参照ピクチャを用いて、動き補償参照ピクチャ予測子を取り出す工程;及び
該動き補償参照ピクチャ予測子を、前記決定された重み付け係数によって変えて、重み付け動き補償参照ピクチャ予測子を形成する工程;
を有することを特徴とする方法。 - 複数の画像ブロックを有するピクチャのビデオ・データを復号化するプログラムを記録した記録媒体であって、前記プログラムは、コンピューター上で、
現在の画像ブロックのデータとともに、参照ピクチャ・インデックスを受信するステップであって、画像ブロックを予測するための特定の参照ピクチャを表し、前記画像ブロックのために受信した参照ピクチャ・インデックスから、重み付け係数を決定する、前記ステップ;
前記受信された参照ピクチャ・インデックスに対応する前記示された参照ピクチャ用いて、動き補償参照ピクチャ予測子を取り出すステップ;並びに
該動き補償参照ピクチャ予測子を、前記決定された重み付け係数によって変えて、重み付け動き補償参照ピクチャ予測子を形成するステップ;
を実行することを特徴とする前記記録媒体。
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US10/410,481 US7903742B2 (en) | 2002-07-15 | 2003-04-09 | Adaptive weighting of reference pictures in video decoding |
PCT/US2003/021735 WO2004008762A1 (en) | 2002-07-15 | 2003-07-14 | Adaptive weighting of reference pictures in video decoding |
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JP2010055801A Division JP5067901B2 (ja) | 2002-07-15 | 2010-03-12 | ビデオ復号化における参照ピクチャの適応重み付け |
JP2010055800A Division JP4822467B2 (ja) | 2002-07-15 | 2010-03-12 | ビデオ復号化における参照ピクチャの適応重み付け |
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JP2005533467A JP2005533467A (ja) | 2005-11-04 |
JP4840853B2 true JP4840853B2 (ja) | 2011-12-21 |
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JP2010055800A Expired - Lifetime JP4822467B2 (ja) | 2002-07-15 | 2010-03-12 | ビデオ復号化における参照ピクチャの適応重み付け |
JP2010055801A Expired - Lifetime JP5067901B2 (ja) | 2002-07-15 | 2010-03-12 | ビデオ復号化における参照ピクチャの適応重み付け |
JP2011226883A Expired - Lifetime JP5473014B2 (ja) | 2002-07-15 | 2011-10-14 | ビデオ復号化における参照ピクチャの適応重み付け |
JP2013210722A Pending JP2014042317A (ja) | 2002-07-15 | 2013-10-08 | ビデオ復号化における参照ピクチャの適応重み付け |
JP2015157895A Expired - Lifetime JP6086559B2 (ja) | 2002-07-15 | 2015-08-10 | ビデオ・データ伝送における参照ピクチャの適応重み付け |
JP2016246457A Expired - Lifetime JP6370359B2 (ja) | 2002-07-15 | 2016-12-20 | ビデオ復号化における参照ピクチャの適応重み付け |
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JP2010055801A Expired - Lifetime JP5067901B2 (ja) | 2002-07-15 | 2010-03-12 | ビデオ復号化における参照ピクチャの適応重み付け |
JP2011226883A Expired - Lifetime JP5473014B2 (ja) | 2002-07-15 | 2011-10-14 | ビデオ復号化における参照ピクチャの適応重み付け |
JP2013210722A Pending JP2014042317A (ja) | 2002-07-15 | 2013-10-08 | ビデオ復号化における参照ピクチャの適応重み付け |
JP2015157895A Expired - Lifetime JP6086559B2 (ja) | 2002-07-15 | 2015-08-10 | ビデオ・データ伝送における参照ピクチャの適応重み付け |
JP2016246457A Expired - Lifetime JP6370359B2 (ja) | 2002-07-15 | 2016-12-20 | ビデオ復号化における参照ピクチャの適応重み付け |
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US (6) | US7903742B2 (ja) |
EP (2) | EP1552692B9 (ja) |
JP (7) | JP4840853B2 (ja) |
KR (2) | KR101066311B1 (ja) |
CN (1) | CN100559862C (ja) |
AT (1) | ATE549862T1 (ja) |
AU (7) | AU2003249056B2 (ja) |
BR (1) | BR0305518A (ja) |
CA (1) | CA2491865C (ja) |
DK (1) | DK1552692T3 (ja) |
ES (1) | ES2380920T3 (ja) |
MX (1) | MXPA05000673A (ja) |
MY (1) | MY140733A (ja) |
PL (1) | PL374264A1 (ja) |
PT (1) | PT1552692E (ja) |
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WO (1) | WO2004008762A1 (ja) |
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