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结合Gamma修正的色彩量化新算法
引用本文:顾尔丹,许端清,陈纯. 结合Gamma修正的色彩量化新算法[J]. 计算机辅助设计与图形学学报, 2002, 14(4): 356-360
作者姓名:顾尔丹  许端清  陈纯
作者单位:浙江大学CAD & CG国家重点实验室,杭州,310027,浙江大学计算机科学与工程学系,杭州,310027
基金项目:国家计委重大项目“面向区域经济发展的高技术产品开发系统”资助
摘    要:色彩量化的最终目的是使得视觉效果上的最化图像与原图像的差别(即失真)最小,量化的应用又对算法效率提出很高的要求,文中提出一种结合Gamma修正的量化算法,速度明显快于中位切分等以往算法,并且量化图像的质量近似于,甚至部分视觉效果优于这些算法,该算法是一种切实有效的图像量化方法,它在计算复杂度和量人结果的精确度上进行了折衷。

关 键 词:Gamma修正 感知 聚类 色彩量化算法 图像编码 图像合成 计算机
修稿时间:2001-03-26

Fast Color Quantization Algorithm Integrated with Gamma Correction
Gu Erdan Xu Duanqing Chen Chun. Fast Color Quantization Algorithm Integrated with Gamma Correction[J]. Journal of Computer-Aided Design & Computer Graphics, 2002, 14(4): 356-360
Authors:Gu Erdan Xu Duanqing Chen Chun
Abstract:The ultimate goal of color image quantization is to minimize visible distortion. While the application of it as a frame buffer technique requires high efficiency of algorithm, a significantly faster quantization strategy than previous methods: median cut, variance, or octree based algorithms, etc., is suggested. The new algorithm is integrated with Gamma correction to partially compensate for perceptually uniform nature in RGB, its output result is approximately as accurate as previous methods. Overall, the new proposed method is a preferable tradeoff between the quantizer complexity and visible distortion in the quantized image.
Keywords:color quantization   Gamma correction   perception clustering
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