BLOCK DISTORTION IN ORTHOGONAL TRANSFORM CODING - ANALYSIS, MINIMIZATION, AND DISTORTION MEASURE

被引：27

作者：

MIYAHARA, M

KOTANI, K

机构：

[1] Technical Univ of Nagaoka, Dep of, Electrical & Computer, Engineering, Nagaoka, Jpn, Technical Univ of Nagaoka, Dep of Electrical & Computer Engineering, Nagaoka, Jpn

来源：

IEEE TRANSACTIONS ON COMMUNICATIONS | 1985年 / 33卷 / 01期

关键词：

TELEVISION TRANSMISSION;

D O I：

10.1109/TCOM.1985.1096192

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：

Psychophysical considerations show that the block-shaped distortion peculiar to orthogonal transform coding (OTC) is ten times more objectionable than random noise distortion. Minimizing the block-shaped distortion is considered here by analyzing the process of generation of coding errors, and the required characteristics of the orthogonal transform function (OTF) are clarified. Computer simulations substantiate its validity. Graphical illustration and measures of the block-shaped distortion are proposed and substantiated. With the aid of these measures, one can evaluate the performance of OTC or a new OTF, if proposed, without conducting visual assessment tests.

引用

页码：90 / 96

页数：7

共 16 条

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