JP6545770B2 - インタ予測方法、復号装置及び映像復号化方法 - Google Patents
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Description
Claims (7)
- 復号装置により実行されるインタ予測方法であって、
スライスヘッダの中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、参照ピクチャ集合に対するピクチャ順カウント(POC)値を導出するステップと、
前記参照ピクチャ集合の前記POC値に基づいて参照ピクチャリストを構成するステップと、
現在ブロックの予測されたサンプルを導出するために、前記参照ピクチャリストに基づいて前記現在ブロックに対するインタ予測を実行するステップと、を含み、
前記スライスヘッダの中の前記POC情報はPOC差値情報を含み、
第i番目の参照ピクチャのPOC値は、前記POC差値情報から導出したPOC差に基づいて導出され、
POC順の現在ピクチャに先行する前記参照ピクチャ集合は降順に整列し、
前記POC順の前記参照ピクチャに先行する前記参照ピクチャ集合に対して、
前記POC差は、前記第i番目が0に等しい時、前記現在ピクチャのPOC値と前記第i番目の参照ピクチャのPOC値との差を示し、
前記POC差は、前記第i番目が0より大きい時、前記第i番目の参照ピクチャのPOC値と第(i−1)番目の参照ピクチャのPOC値との差を示す、インタ予測方法。 - POC順で前記現在ピクチャに先行する前記参照ピクチャ集合に対するPOC差は、負の符号を有する、請求項1に記載のインタ予測方法。
- 前記スライスヘッダはPスライス又はBスライスのためである、請求項1に記載の方法。
- インタ予測のための復号装置であって、
スライスヘッダの中のピクチャ順カウント(POC)情報を取得し、前記POC情報に基づいて参照ピクチャ集合に対するPOC値を導出し、前記参照ピクチャ集合のPOC値に基づいて参照ピクチャリストを構成し、現在ブロックの予測サンプルを導出するために前記参照ピクチャリストに基づいて前記現在ブロックに関するインタ予測を実行する復号器を含み、
前記スライスヘッダの中の前記POC情報はPOC差値情報を含み、
第i番目の参照ピクチャのPOC値は、前記POC差値情報から導出したPOC差に基づいて導出され、
POC順の現在ピクチャに先行する前記参照ピクチャ集合は降順に整列し、
前記POC順の前記参照ピクチャに先行する前記参照ピクチャ集合に対して、
前記POC差は、前記第i番目が0に等しい時、前記現在ピクチャのPOC値と前記第i番目の参照ピクチャのPOC値との差を示し、
前記POC差は、前記第i番目が0より大きい時、前記第i番目の参照ピクチャのPOC値と第(i−1)番目の参照ピクチャのPOC値との差を示す、復号装置。 - POC順で前記現在ピクチャに先行する前記参照ピクチャ集合に対するPOC差は、負の符号を有する、請求項4に記載の復号装置。
- 前記スライスヘッダはPスライス又はBスライスのためである、請求項4に記載の復号装置。
- 符号化装置による映像符号化方法であって、
参照ピクチャ集合のピクチャ順カウント(POC)値を導出するステップと、
前記参照ピクチャ集合の前記導出されたPOC値に基づいて前記参照ピクチャ集合のPOC情報を導出するステップであって、前記POC情報は前記参照ピクチャ集合に対するPOC差を示す、ステップと、
前記POC情報を含むビデオ情報を符号化するステップと、
前記POC情報はPOC差値情報を含み、前記POC情報はスライスヘッダに含まれ、
POC差値情報は第i番目の参照ピクチャのPOC値に対するPOC差を特定し、
POC順の現在ピクチャに先行する前記参照ピクチャ集合は降順に整列し、
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集合に対して、
前記POC差は、前記第i番目が0に等しい時、前記現在ピクチャのPOC値と前記第i番目の参照ピクチャのPOC値との差を示し、
前記POC差は、前記第i番目が0より大きい時、前記i番目の参照ピクチャのPOC値と第(i−1)番目の参照ピクチャのPOC値との差を示す、映像符号化方法。
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