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Proceedings Paper

Underwater range-gated laser imaging enhancement based on contrast-limited adaptive histogram equalization
Author(s): Liang Sun; Xinwei Wang; Xiaoquan Liu; Pengdao Ren; Pingshun Lei; Ruirong You; Jun He; Yan Zhou; Yuliang Liu
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Paper Abstract

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.

Paper Details

Date Published: 31 October 2016
PDF: 6 pages
Proc. SPIE 10020, Optoelectronic Imaging and Multimedia Technology IV, 1002015 (31 October 2016); doi: 10.1117/12.2246033
Show Author Affiliations
Liang Sun, Institute of Semiconductors (China)
Xinwei Wang, Institute of Semiconductors (China)
Xiaoquan Liu, Institute of Semiconductors (China)
Pengdao Ren, Institute of Semiconductors (China)
Pingshun Lei, Institute of Semiconductors (China)
Ruirong You, Institute of Semiconductors (China)
Jun He, Institute of Semiconductors (China)
Yan Zhou, Institute of Semiconductors (China)
Yuliang Liu, Institute of Semiconductors (China)
Univ. of Chinese Academy of Sciences (China)

Published in SPIE Proceedings Vol. 10020:
Optoelectronic Imaging and Multimedia Technology IV
Qionghai Dai; Tsutomu Shimura, Editor(s)

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