JP6272759B2 - 映像情報通知方法及び装置、並びにこれを利用した復号方法及び装置 - Google Patents
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Description
Claims (7)
- スライスヘッダを介して参照ピクチャを含む参照ピクチャ集合を構成するためのピクチャ順カウント(POC)情報を取得するステップと、
前記POC情報に基づいて、前記参照ピクチャ集合に含まれる前記参照ピクチャを特定するピクチャ順カウント(POC)値を導出して前記参照ピクチャ集合を構成するステップと、
前記参照ピクチャ集合に基づいて現在ブロックに対するインタ予測を行うステップと、を有し、
第i番目の参照ピクチャのPOC値は、前記POC情報から導出したPOC差に基づいて導出され、
前記スライスヘッダの前記POC情報はPOC差値情報を含み、
前記POC差値情報は、前記第iが0に等しい場合、現在ピクチャと前記第i番目の参照ピクチャとのPOC差を特定し、
前記POC差値情報は、前記第iが0より大きい場合、前記第i番目の参照ピクチャと第(i−1)番目の参照ピクチャとのPOC差を特定する、ビデオ復号方法。 - 前記参照ピクチャ集合を構成するための前記情報を取得するステップは、
POC順で前記現在ピクチャに先行する前記参照ピクチャに対する前記POC差を、前記POC順の降順に取得するステップと、
前記POC順で前記現在ピクチャに後続する前記参照ピクチャに対する前記POC差を、前記POC順の昇順に取得するステップを含む、請求項1に記載のビデオ復号方法。 - POC順で前記現在ピクチャに先行する前記参照ピクチャに対するPOC差は、負の符号を有し、
前記POC順で前記現在ピクチャに後続する前記参照ピクチャに対するPOC差は、正の符号を有する、請求項1に記載のビデオ復号方法。 - 前記第i番目の参照ピクチャが前記POC情報に基づいて導出される1番目の参照ピクチャの場合、前記現在ピクチャと前記第i番目の参照ピクチャとのPOC差が前記POC情報に基づいて導出され、
前記第i番目の参照ピクチャが前記POC情報に基づいて導出される2番目以降の参照ピクチャの場合、前記第i番目の参照ピクチャと前記第(i−1)番目の参照ピクチャとのPOC差が前記POC情報に基づいて導出される、請求項1に記載のビデオ復号方法。 - 前記参照ピクチャ集合に含まれる前記参照ピクチャの整列順を利用して、参照ピクチャリストを構成するステップをさらに含み、
前記インタ予測は前記参照ピクチャリストを利用して行われる、請求項1に記載のビデオ復号方法。 - 前記参照ピクチャ集合内の前記参照ピクチャの整列順は、
前記参照ピクチャ集合内の参照ピクチャのうち、POC順で前記現在ピクチャに先行する参照ピクチャに対するPOC値の降順に応じた整列順と、
前記参照ピクチャ集合内の参照ピクチャのうち、前記POC順で前記現在ピクチャに後続する参照ピクチャに対するPOC値の昇順に応じた整列順とを含む、請求項5に記載のビデオ復号方法。 - 前記参照ピクチャリストに対して、前記POC順で前記現在ピクチャに先行する前記参照ピクチャに対してPOC値の降順に応じてインデクスを付与し、前記POC順で前記現在ピクチャに後続する前記参照ピクチャに対してPOC値の昇順に応じてインデクスを付与する、請求項5又は6に記載のビデオ復号方法。
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JP2018029383A (ja) * | 2011-09-22 | 2018-02-22 | エルジー エレクトロニクス インコーポレイティド | 映像情報通知方法及び装置、並びにこれを利用した復号方法及び装置 |
US10321154B2 (en) | 2011-09-22 | 2019-06-11 | Lg Electronics Inc. | Method and apparatus for signaling image information, and decoding method and apparatus using same |
US10791337B2 (en) | 2011-09-22 | 2020-09-29 | Lg Electronics Inc. | Method and apparatus for signaling image information, and decoding method and apparatus using same |
US11412252B2 (en) | 2011-09-22 | 2022-08-09 | Lg Electronics Inc. | Method and apparatus for signaling image information, and decoding method and apparatus using same |
US11743494B2 (en) | 2011-09-22 | 2023-08-29 | Lg Electronics Inc. | Method and apparatus for signaling image information, and decoding method and apparatus using same |
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