摘要
针对矢量量化和标量量化各有优劣的现状，一种简单、有效的新型量化方法被提出来了。本文把它应用于基于小波变换的指纹压缩，改进了ＦＢＩ的ＷＳＱ算法〔１〕，大大降低了量化计算复杂度。既获得较高的压缩比，又有较好的主客观质量，并与ＪＰＥＧ标准进行了对比。
Each of Vector Quantization and Scalar Quantization has its strong and weak points. This paper presented a new、 fast、 and efficient quantization method. It was applied to compression of gray-scale fingerprint images, improved the WSQ algorithm, which was proposed by FBI. This method reduced computer complexity greatly, and got good subjective and objective quality.
出处
《小型微型计算机系统》
EI
CSCD
北大核心
1998年第2期50-53,共4页
Journal of Chinese Computer Systems
基金
"九五"国防预研基金
国防科技大学试验技术基金
关键词
小波变换
量化法
指纹图像压缩
图像处理
Image coding Wavelet transform Vector quantization Scalar quantization
