Fast and robust color constancy algorithm based on grey block-differencing hypothesis

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• 作者：Shiming Lai (1)
  Xin Tan (1)
  Yu Liu (1)
  Bin Wang (1)
  Maojun Zhang (1)
  
• 关键词：color constancy ; grey block ; differencing hypothesis ; illuminant estimation ; white balance
• 刊名：Optical Review
• 出版年：2013
• 出版时间：July 2013
• 年：2013
• 卷：20
• 期：4
• 页码：341-347
• 全文大小：1303KB
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• 作者单位：Shiming Lai (1)
  Xin Tan (1)
  Yu Liu (1)
  Bin Wang (1)
  Maojun Zhang (1)
  
  1. College of Information System and Management, National University of Defense Technology, Changsha, Hunan, 410073, China
  

文摘

Color constancy is a fundamental research topic in color and vision. Numerous methods have been proposed in recent years. New methods are highly accurate but tend to be more complex. This paper proposes a simple low-level statistical algorithm based on a new hypothesis, the grey block-differencing hypothesis, which states that the average of reflectance differences of adjacent blocks in a scene is achromatic. The new method has almost the same complexity as the simplest methods (i.e., grey world and max-RGB). Experimental results demonstrate that the accuracy of the proposed method is exceptional.