CODEWORD ORIENTATION - AN IMPROVED SUBBAND CODING VECTOR QUANTIZATION SCHEME FOR IMAGE-CODING

被引：3

作者：

AKROUT, NM

DIAB, C

PROST, R

GOUTTE, R

机构：

[1] INSA, Villeurbanne Cedex

来源：

OPTICAL ENGINEERING | 1994年 / 33卷 / 07期

关键词：

IMAGE CODING; VECTOR QUANTIZATION; SUBBAND CODING; MULTIRESOLUTION;

D O I：

10.1117/12.172903

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A new procedure is proposed for image compression as an improvement on vector quantization of subbands. Codewords with vertical and horizontal shape are used to vector-quantize the high-frequency subimages obtained from a multiresolution analysis scheme. The code-word shapes take into account the orientation and resolution of each subband detail to preserve edges at low bit rates. Their sizes are defined according to the correlation distances in each subband for the horizontal and vertical directions.

引用

页码：2394 / 2399

页数：6

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