Coefficient grouping method for shape-adaptive DCT

被引：5

作者：

Bi, M ^{[1
]}

Ong, SH ^{[1
]}

Ang, YH ^{[1
]}

机构：

[1] NATL UNIV SINGAPORE, INST SYST SCI, SINGAPORE 117548, SINGAPORE

来源：

ELECTRONICS LETTERS | 1996年 / 32卷 / 03期

关键词：

discrete cosine transforms; data compression; image processing;

D O I：

10.1049/el:19960145

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：

A generalised transform scheme for arbitrarily shaped image segments for the purpose of image compression is presented. The main feature of the scheme is an adaptive coefficient grouping method used in the second stage of the DCT. Experimental results show that this transform scheme performs better in terms of transform efficiency and maximum reducible bits than the methods proposed in [2] for all the image models used.

引用

页码：201 / 202

页数：2