Verfahren und Gerät zur Kodierung mit adaptivem Dynamikbereich
摘要
<p>An adaptive dynamic range encoding method and device is disclosed, in which evaluation data mainly centered about the amount of the change in the spatial direction of picture data in a block is detected, and re-quantization is performed which will give a minimum value of the evaluation data. The re-quantization is performed at an optimum quantization step conforming to the picture in the block in such a manner that picture portion shaving the same level may remain at the same level after re-quantization. This renders it possible to eliminate quantization distortions form being produced in the reproduced picture. <IMAGE></p>
申请公布号
DE69321812(D1)
申请公布日期
1998.12.03
申请号
DE1993621812
申请日期
1993.12.10
申请人
SONY CORP., TOKIO/TOKYO, JP
发明人
KONDO, TETSUJIRO, C/O SONY CORPORATION, SHINAGAWA-KU, TOKYO, JP;KAWAGUCHI, KUNIO, C/O SONY CORPORATION, SHINAGAWA-KU, TOKYO, JP