CASIA OpenIR  > 09年以前成果
Brightness preserving histogram equalization with maximum entropy: A variational perspective
Wang, C; Ye, ZF
AbstractHistogram 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).
KeywordImage Enhancement Histogram Equalization Histogram Specification Maximum Entropy Variational Approach Mean Brightness Preserving
WOS HeadingsScience & Technology ; Technology
Indexed BySCI
WOS Research AreaEngineering ; Telecommunications
WOS SubjectEngineering, Electrical & Electronic ; Telecommunications
WOS IDWOS:000234152300043
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Cited Times:182[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Affiliation1.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
Recommended Citation
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.
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