Title :
Contrast Enhancement Method Based on Average Luminance with Weighted Histogram Equalization
Author :
Shen-Chuan Tai ; Yi-Ying Chang ; Kang-Ming Li ; Ting-Chou Tsai
Author_Institution :
Inst. of Comput. & Commun. Eng., Nat. Cheng Kung Univ., Tainan, Taiwan
Abstract :
In this paper, we proposed a method to enhance global contrast of an image based on average luminance with weighted histogram equalization (ALWHE) for low dynamic range images (LDRI). Automation of parameter selection can easily be done by iteratively using the proposed method. The purposed method overcomes the disadvantage of HE like luminance shifting and washed-out looking. We present experimental results to compare results of contrast enhancement with other methods.
Keywords :
image enhancement; statistical analysis; average luminance; image contrast enhancement; low dynamic range image; luminance shifting; parameter selection; washed-out looking; weighted histogram equalization; Brightness; Computer science; Computer security; Digital cameras; Dynamic range; Helium; Histograms; Image processing; Information security; National security; Contrast; Histogram Equalization (HE);
Conference_Titel :
Information Assurance and Security, 2009. IAS '09. Fifth International Conference on
Conference_Location :
Xi´an
Print_ISBN :
978-0-7695-3744-3
DOI :
10.1109/IAS.2009.369
