Brightness preserving histogram equalization with maximum entropy: A variational perspective

CASIA OpenIR > 09年以前成果

	Brightness preserving histogram equalization with maximum entropy: A variational perspective
	Wang, C; Ye, ZF
发表期刊	IEEE TRANSACTIONS ON CONSUMER ELECTRONICS
	2005-11-01
卷号	51 期号:4 页码:1326-1334
文章类型	Article
摘要	Histogram equalization (HE) is a simple and effective image enhancing technique, however, it tends to change the mean brightness of the image to the middle level of the permitted range, and hence. is not very suitable for consumer electronic products, where preserving the original brightness is essential to avoid annoying artifacts. This paper proposes a novel extension of histogram equalization, actually histogram specification, to overcome such drawback as HE. To maximize the entropy is the essential idea of HE to make the histogram as flat as possible. Following that, the essence of the proposed algorithm,. named Brightness Preserving Histogram Equalization with Maximum Entropy (BPHEME), tries to find, by the variational approach, the target histogram that maximizes the entropy, under the constraints that the mean brightness is fixed, then transforms the original histogram to that target one using histogram specification. Comparing to the existing methods including HE, Brightness preserving Bi-Histogram Equalization (BBHE), equal area Dualistic Sub-Image Histogram Equalization (DSIHE), and Minimum Mean Brightness Error Bi-Histogram Equalization (MMBEBHE), experimental results show that BPHEME can not only enhance the image effectively, but also preserve the original brightness quite well, so that it is possible to be utilized in consumer electronic products(1).
关键词	Image Enhancement Histogram Equalization Histogram Specification Maximum Entropy Variational Approach Mean Brightness Preserving
WOS标题词	Science & Technology ; Technology
关键词[WOS]	CONTRAST ENHANCEMENT
收录类别	SCI
语种	英语
WOS研究方向	Engineering ; Telecommunications
WOS类目	Engineering, Electrical & Electronic ; Telecommunications
WOS记录号	WOS:000234152300043
引用统计	被引频次：263[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ia.ac.cn/handle/173211/9099
专题	09年以前成果
作者单位	1.Univ Sci & Technol China, Inst Stat Signal Proc, Dept Elect Engn & Informat Sci, Hefei 230027, Anhui, Peoples R China 2.Chinese Acad Sci, NLPR, Inst Automat, Beijing 100080, Peoples R China
推荐引用方式 GB/T 7714	Wang, C,Ye, ZF. Brightness preserving histogram equalization with maximum entropy: A variational perspective[J]. IEEE TRANSACTIONS ON CONSUMER ELECTRONICS,2005,51(4):1326-1334.
APA	Wang, C,&Ye, ZF.(2005).Brightness preserving histogram equalization with maximum entropy: A variational perspective.IEEE TRANSACTIONS ON CONSUMER ELECTRONICS,51(4),1326-1334.
MLA	Wang, C,et al."Brightness preserving histogram equalization with maximum entropy: A variational perspective".IEEE TRANSACTIONS ON CONSUMER ELECTRONICS 51.4(2005):1326-1334.