JP2018011323A - 映像復号化装置、映像符号化装置および記録媒体 - Google Patents
映像復号化装置、映像符号化装置および記録媒体 Download PDFInfo
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Abstract
Description
映像符号化装置100は、入力映像の入力ブロックに対する予測ブロックを生成した後、入力ブロックと予測ブロックとの残差(residual)を符号化する。
量子化部140は、前記変換係数を量子化することで、量子化された係数(quantized coefficient)を出力する。
エントロピー復号化過程は、前述したエントロピー符号化過程の反対過程である。即ち、エントロピー復号化部210は、頻繁に発生されるシンボルを少ない数のビットで表現したビットストリームから量子化された係数を含むシンボルを生成する。
Claims (3)
- ビットストリームを復号化することによって、残差ブロックの量子化された変換係数を生成するためのエントロピー復号化部と、
参照ピクチャを格納するための参照ピクチャバッファと、
前記参照ピクチャ及び前記参照ピクチャの動きベクトルを利用して、予測ブロックを生成するための動き補償部と、
前記残差ブロック及び前記予測ブロックを利用して、復元ブロック生成するための加算器と、
を含み、
前記参照ピクチャの前記動きベクトルは、大きさ調整され、所定のレンジでクリップされ、
前記参照ピクチャの前記動きベクトルは、ブロック単位に格納され、
前記動き補償部は、前記ブロック単位に格納された前記参照ピクチャの前記動きベクトルを利用して、前記予測ブロックを生成することを特徴とする映像復号化装置。 - 参照ピクチャを格納するための参照ピクチャバッファと、
前記参照ピクチャ及び前記参照ピクチャの動きベクトルを利用して、予測ブロックを生成するための動き補償部と、
前記予測ブロック及び現在ブロックを利用して、残差ブロックを生成するための減算器と、
前記残差ブロックの量子化された変換係数を符号化することによってビットストリームを生成するためのエントロピー符号化部と、
を含み、
前記参照ピクチャの前記動きベクトルは、大きさ調整され、所定のレンジでクリップされ、
前記参照ピクチャの前記動きベクトルは、ブロック単位に格納され、
前記動き補償部は、前記ブロック単位に格納された前記参照ピクチャの前記動きベクトルを利用して、前記予測ブロックを生成することを特徴とする映像符号化装置。 - 請求項2に記載の映像符号化装置によって生成されたビットストリームを格納した記録媒体。
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KR10-2011-0009636 | 2011-01-31 | ||
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KR10-2011-0019166 | 2011-03-03 | ||
KR10-2011-0050853 | 2011-05-27 | ||
KR1020110050853A KR20120088488A (ko) | 2011-01-31 | 2011-05-27 | 시간적 움직임 벡터 저장 방법 및 그 장치 |
KR10-2011-0065707 | 2011-07-01 | ||
KR1020110065707A KR20120088494A (ko) | 2011-01-31 | 2011-07-01 | 시간적 움직임 벡터 저장 방법 및 그 장치 |
KR10-2012-0010096 | 2012-01-31 | ||
KR1020120010096A KR101428030B1 (ko) | 2011-01-31 | 2012-01-31 | 움직임 벡터를 이용한 영상 복호화 장치 |
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JP2017164566A Active JP6550429B2 (ja) | 2011-01-31 | 2017-08-29 | 映像復号化装置、および映像符号化装置 |
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