A FULLY ADAPTIVE DCT BASED COLOR IMAGE SEQUENCE CODER

被引：1

作者：

CHEN, RJ ^{[1
]}

CHIEU, BC ^{[1
]}

机构：

[1] NATL TAIWAN INST TECHNOL,DEPT ELECTR ENGN,TAIPEI 10772,TAIWAN

来源：

SIGNAL PROCESSING-IMAGE COMMUNICATION | 1994年 / 6卷 / 04期

关键词：

MOTION COMPENSATION; IMAGE SEQUENCE CODING; QUADTREE-BASED VARIABLE SIZE BLOCK MATCHING; IMAGE ACTIVITY; ADAPTIVE ZONAL FILTERS; ADAPTIVE LAPLACIAN QUANTIZER; SCALING FACTOR; 2-SIDED HUFFMAN CODE;

D O I：

10.1016/0923-5965(94)90016-7

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 new fully adaptive discrete cosine transform (DCT) based color image sequence coding system is presented. A variable size block matching motion-compensation scheme is first designed. It differs from the conventional block matching motion compensation by varying the block size to make a better trade-off between the required bit rate and picture quality. Connected to the compensation scheme is the DCT with block size varied adaptively to the working block size derived from the motion compensator. Different gating functions are defined on the DCT to select the most efficient DCT coefficients in order to reach the best performance. An adaptive Laplacian quantizer and a two-sided Huffman entropy coder are finally utilized to get the optimal coding result.

引用

页码：289 / 301

页数：13

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