Journal
INFRARED PHYSICS & TECHNOLOGY
Volume 55, Issue 4, Pages 309-315Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.infrared.2012.03.004
Keywords
Infrared image enhancement; Double plateaus histogram equalization; Adaptive algorithm; Target detection
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Funding
- National High Technology Research and Development Program of China (863 Program) [2011AA7014047, 2011AA7044031]
- Hubei Province Natural Science Foundation of China [2010CDB02702]
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In infrared images, detail pixels are easily immerged in large quantity of low-contrast background pixels. According to these characteristics, an adaptive contrast enhancement algorithm based on double plateaus histogram equalization for infrared images was presented in this paper. Traditional double plateaus histogram equalization algorithm used constant threshold and could not change the threshold value in various scenes, so that its practical usage is limited. In the proposed algorithm, the upper and lower threshold value could be calculated by searching local maximum and predicting minimum gray interval and be updated in real time. With the proposed algorithm, the background of infrared image was constrained while the details could also be enhanced. Experimental results proved that the proposed algorithm can effectively enhance the contrast of infrared images, especially the details of infrared images. (C) 2012 Published by Elsevier B.V.
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