SPECTRAL ENTROPY-ACTIVITY CLASSIFICATION IN ADAPTIVE TRANSFORM CODING

被引:15
作者
MESTER, R [1 ]
FRANKE, U [1 ]
机构
[1] DAIMLER BENZ AG,W-7000 STUTTGART,GERMANY
关键词
D O I
10.1109/49.138996
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
Most adaptive transform coding systems are based on a classification of transform blocks into classes of different statistical properties. In this contribution, a two-dimensional feature space for block classification is proposed which discriminates reliably between blocks that require very different processing. In combination with a block "activity" measurement, the introduced "spectral entropy" feature offers the possibility to stabilize the reconstruction quality of transform coding systems for each processed block on a high level.
引用
收藏
页码:913 / 917
页数:5
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