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利用累积分布函数的亮度保持均衡算法
引用本文:吕宗伟,唐治德,周林,杨浩. 利用累积分布函数的亮度保持均衡算法[J]. 计算机辅助设计与图形学学报, 2011, 23(9): 1495-1503
作者姓名:吕宗伟  唐治德  周林  杨浩
作者单位:重庆大学输配电装备及系统安全与新技术国家重点实验室 重庆400030
基金项目:国家自然科学基金(50877082); 中央高校基本科研业务(CDJZR10150015)
摘    要:为了解决对比增强算法中的亮度保持问题,提出一个有效的基于直方图的亮度保持和对比增强算法.首先利用累积分布函数计算关键点,这些关键点对亮度保持有重要影响;然后基于关键点将直方图分割为几个子直方图,并对每个子直方图进行均衡;最后将均衡之后的子直方图合并,得到增强的图像.实验结果表明,与已有的一些基于直方图的算法相比,该算法...

关 键 词:直方图均衡  对比增强  亮度保持

Brightness Preserving Histogram Equalization Based on Cumulative Distribution Function
Lu Zongwei,Tang Zhide,Zhou Lin,Yang Hao. Brightness Preserving Histogram Equalization Based on Cumulative Distribution Function[J]. Journal of Computer-Aided Design & Computer Graphics, 2011, 23(9): 1495-1503
Authors:Lu Zongwei  Tang Zhide  Zhou Lin  Yang Hao
Affiliation:Lu Zongwei,Tang Zhide,Zhou Lin,and Yang Hao(State Key Laboratory of Power Transmission Equipment & System Security and New Technology Chongqing University,Chongqing 400030)
Abstract:To preserve brightness better,one efficient method for contrast enhancement is proposed based on histogram equalization.First,the cumulative distribution function is used to calculate critical points which play an important role in preserving brightness.Then,the histogram is separated into several sub-histograms by critical points and equalization is applied for each sub-histogram.Finally,the enhanced images are obtained by merging the sub-images for each sub-histogram.The experimental results show that the...
Keywords:histogram equalization  contrast enhancement  brightness preservation  
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