ADAPTIVE HIERARCHICAL VECTOR QUANTIZATION FOR IMAGE-CODING

被引：4

作者：

ZHONG, S

SHI, QY

CHENG, MT

机构：

[1] BEIJING UNIV,CTR INFORMAT SCI,BEIJING 100871,PEOPLES R CHINA

[2] BEIJING UNIV,NATL LAB MACHINE PERCEPT,BEIJING 100871,PEOPLES R CHINA

来源：

PATTERN RECOGNITION LETTERS | 1994年 / 15卷 / 12期

关键词：

ADAPTIVE VQ; INDEX MAP; INDEX-CODEBOOK;

D O I：

10.1016/0167-8655(94)90106-6

中图分类号：

TP18 [人工智能理论];

学科分类号：

081104 ; 0812 ; 0835 ; 1405 ;

摘要：

In this paper an adaptive hierarchical algorithm of vector quantization for image coding is proposed. First the basic codebook is generated adaptively, then the codes are coded into higher-level codes by creating an index codebook using the redundance presented in the codes. This hierarchical scheme lowers the bit rate significantly and causes little more computation and no more distortion than the single-layer adaptive VQ algorithm does which is used to create the basic codebook.

引用

页码：1171 / 1175

页数：5

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