| 改进灰度世界颜色校正算法 |
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| 引用本文： | 徐晓昭,蔡轶珩,刘晓民,刘长江,沈兰荪.改进灰度世界颜色校正算法[J].光子学报,2010,39(3):559-564. |
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| 作者姓名： | 徐晓昭 蔡轶珩 刘晓民 刘长江 沈兰荪 |
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| 作者单位： | 北京工业大学,信号与信息处理研究室,北京,100124 |
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| 基金项目： | 国家自然科学基金重点项目(60431020)、北京市自然科学基金项目(3052005)、教育部博士点基金项目(20040005015)、北京工业大学第六届研究生科技基金资助课题(ykj-2007-1908)和北京工业大学第二届研究生创新设计竞赛资助 |
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| 摘 要： | 讨论了灰度世界算法,提出了两种改进的灰度世界算法——基于标准差加权的算法和基于图像熵约束的算法,从而避免了当给定图像仅有少量几种颜色或大块单一颜色时的冥法失效问题.通过对算法颜色校正结果进行主观(视觉上)评价,并对算法性能通过使用色差数据进行了客观评价.实验结果表明:改进算法对实际采集的图像和下载的图像都有较好的校正效果.
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| 关 键 词： | 图像处理 颜色校正 灰度世界 标准差加权 图像熵 |
| 收稿时间： | 2008-08-06 |
| 修稿时间： | 2008-11-10 |
Improved Grey World Color Correction Algorithms |
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| XU Xiao-zhao,CAI Yi-heng,LIU Xiao-min,LIU Chang-jiang,SHEN Lan-sun.Improved Grey World Color Correction Algorithms[J].Acta Photonica Sinica,2010,39(3):559-564. |
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| Authors: | XU Xiao-zhao CAI Yi-heng LIU Xiao-min LIU Chang-jiang SHEN Lan-sun |
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| Institution: | (Signal |and |Information Processing Lab,Beijing University of Technology,Beijing 100124,China) |
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| Abstract: | The grey world algorithm is discussed in detail,and two improved grey world algorithms are proposed,to overcome the limit that the algorithm may be ineffective in the case of few colors or large union colors image which are based on standard deviation weighted algorithm and based on image entropy constraint algorithm respectively.The algorithms are evaluated in two aspects: the color correction results are compared subjectively (visually),and the performance is evaluated objectively using color difference data.The experimental results show that the improved algorithms have better correction effect on both real capture images and downloaded images. |
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| Keywords: | Image processing Color correction Grey world Standard deviation weighted Image entropy |
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