22 July 1997 Low-contrast enhancement for electro-optic data
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Abstract
Laser line scan imagery has been found to have fluctuating brightness regions due to high/low signal strengths when scanning data. The low signal strength regions can obscure visibility of potential mines, sometimes to the point of preventing identification by an operator inspecting the data. Two contrast enhancement routines have been developed to enhance obscured objects in the low signal strength regions: a background equalization routine that equalizes the high/low signal strength regions and a local histogram clipping routine that applies a moving window histogram clip to enhance details in the low strength regions without effecting the high strength regions.
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Andrew J. Nevis, "Low-contrast enhancement for electro-optic data", Proc. SPIE 3079, Detection and Remediation Technologies for Mines and Minelike Targets II, (22 July 1997); doi: 10.1117/12.280876; https://doi.org/10.1117/12.280876
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