Underwater Range-Gated Laser Imaging Enhancement based on Contrast Limited Adaptive Histogram Equalization

被引：0
|
作者：
Sun Liang [1 ]
Wang Xinwei [1 ]
Liu Xiaoquan [1 ]
Ren Pengdao [1 ]
Lei Pingshun [1 ]
You Ruirong [1 ]
He Jun [1 ]
Zhou Yan [1 ]
Liu Yuliang [1 ,2 ]
机构：
[1] Chinese Acad Sci, Inst Semicond, Optoelect Syst Lab, Beijing 100083, Peoples R China
[2] Univ Chinese Acad Sci, Coll Mat Sci & Optoelect Technol, Beijing 100049, Peoples R China
来源：
OPTOELECTRONIC IMAGING AND MULTIMEDIA TECHNOLOGY IV | 2016年 / 10020卷
关键词：
Underwater range-gated; Histogram Equalization; laser imaging; IMAGES;
D O I：
10.1117/12.2246033
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Underwater range-gated laser imaging (URGLI) still has some problems like un-uniform light, low brightness and contrast. To solve the problems, a variant of adaptive histogram equalization called contrast limited adaptive histogram equalization (CLAHE) is proposed in this paper. In experiment, using the CLAHE and HE to enhance the images, and evaluate the quality of enhanced images by peak signal to noise ratio (PSNR) and contrast. The result shows that the HE gets the images over-enhanced, while the CLAHE has a good enhancement with compressing the over-enhancement and the influence of un-uniform light. The experimental results demonstrate that the CLAHE has a good result of image enhancement for target detection by underwater range-gated laser imaging system.
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页数：6
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