JP2013214989A - 大きいサイズの変換単位を利用した映像符号化、復号化方法及び装置 - Google Patents
大きいサイズの変換単位を利用した映像符号化、復号化方法及び装置 Download PDFInfo
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Abstract
【解決手段】 受信されたビットストリームからパージングされた符号化単位の分割形態についての情報、予測単位についての情報、及び変換単位についての情報を利用して、映像の復号化のための少なくとも1つの階層構造の符号化単位、それぞれの符号化単位に対する予測のための少なくとも1つの予測単位、及びそれぞれの符号化単位に対する逆変換のための少なくとも1つ以上の変換単位を決定する段階と、ビットストリームから、それぞれの符号化単位を所定の変換単位により変換して生成された変換係数をパージングし、変換係数をエントロピー復号化、逆量子化及び逆変換して、少なくとも1つの予測単位のデータを復元する段階と、復元されたデータを用いたイントラ予測及びインター予測を行って映像を復元する段階とを含む。
【選択図】 図1
Description
Claims (4)
- 映像復号化装置において、
受信されたビットストリームからパージングされた符号化単位の分割形態についての情報、予測単位についての情報、及び変換単位についての情報を利用して、映像の復号化のための少なくとも1つの階層構造の符号化単位、それぞれの符号化単位に対する予測のための少なくとも1つの予測単位、及び前記それぞれの符号化単位に対する逆変換のための少なくとも1つ以上の変換単位を決定するプロセッサと、
前記ビットストリームから、前記それぞれの符号化単位を所定の変換単位により変換して生成された変換係数をパージングし、前記変換係数をエントロピー復号化、逆量子化及び逆変換して、前記少なくとも1つの予測単位のデータを復元し、前記復元されたデータを用いたイントラ予測及びインター予測を行って前記映像を復元する復号化部と、を含み、
前記階層構造の符号化単位は、前記映像が分割された最大サイズの符号化単位から深度により階層的に分割され、
前記所定の変換単位は、前記予測単位より大きなサイズの形態に決定されることを特徴とする映像復号化装置。 - 前記少なくとも1つの予測単位は、複数個の予測単位を含み、前記予測単位より大きなサイズの形態に決定される変換単位は、前記複数個の予測単位を結合することによって生成されることを特徴とする請求項1に記載の映像復号化装置。
- 前記少なくとも1つの変換単位のサイズは、前記少なくとも1つの予測単位のサイズ及び前記符号化単位のサイズと異なることを特徴とする請求項1に記載の映像復号化装置。
- 前記映像は、深度により前記最大符号化単位サイズ情報による最大符号化単位から前記符号化深度の符号化単位まで階層的に分割され、
現在深度の符号化単位は、上位深度の符号化単位から分割された正方形データ単位の1つであり、
前記現在深度の符号化単位は、隣接符号化単位と独立して当該符号化深度に至るまで下位深度の符号化単位に分割されることを特徴とする請求項1に記載のビデオ復号化装置。
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