| 基于随机分布的局部直方图均衡算法 |
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| 引用本文： | 张勇,张剑,欧翼,张玺.基于随机分布的局部直方图均衡算法[J].现代科学仪器,2011(3):9-11,26. |
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| 作者姓名： | 张勇 张剑 欧翼 张玺 |
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| 作者单位： | 重庆有线电视网络有限公司规划设计院,重庆,400051 |
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| 基金项目： | 十一五”国家科技支撑计划项目(2008BAH28B06) |
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| 摘 要： | 针对现有的局部直方图均衡算法存在自适应性较弱、容易导致过增强等缺陷,本文提出了一种基于随机分布的局部直方图均衡算法。该算法首先建立随机分布模型,在图像中选取随机子图;然后采用保持亮度的双直方图均衡算法对这些子图进行增强;最后融合各个子图得到最终增强结果。实验测试结果表明,本文算法自适应性强,能够在保持均值亮度、减少过增强的基础上增强局部细节,增强后的图像具有较好的视觉效果。
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| 关 键 词： | 对比度增强 局部直方图均衡 随机分布 |
Local Histogram Equalization Algorithm Based on Random Distribution |
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| Zhang Yong,Zhang Jian,Ou Yi,Zhang Xi.Local Histogram Equalization Algorithm Based on Random Distribution[J].Modern Scientific Instruments,2011(3):9-11,26. |
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| Authors: | Zhang Yong Zhang Jian Ou Yi Zhang Xi |
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| Affiliation: | Zhang Yong,Zhang Jian,Ou Yi,Zhang Xi (Planning and Design Institute,Chongqing Cable Network CO.LTD,Chongqing 400051,China) |
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| Abstract: | Aiming at the shortages of existing local histogram equalization algorithm,such as weak adaptability,excessive contrast enhancement and so on,a local contrast enhancement algorithm base on random distribution is presented in this paper.Firstly,this algorithm proposes a random distribution model and randomly selected sub-graphs in the image.And then these sub-graphs were enhanced by using the brightness preserving Bi-histogram equalization algorithm.Finally the results of the various enhanced sub-graphs were... |
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| Keywords: | Contrast Enhancement Local Histogram Equalization Random Distribution |
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