Journal
INFORMATION FUSION
Volume 11, Issue 2, Pages 69-77Publisher
ELSEVIER
DOI: 10.1016/j.inffus.2009.06.005
Keywords
Image fusion; Color mapping; False color; Nightvision
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We present a new method to render multi-band night-time imagery (images from sensors whose sensitive range does not necessarily coincide with the visual part of the electromagnetic spectrum, e g image intensifiers, thermal camera's) in natural daytime colors. The color mapping is derived from the combination of a multi-band image and a corresponding natural color daytime reference image. The mapping optimizes the match between the multi-band image and the reference image, and yields a nightvision image with a natural daytime color appearance. The lookup-table based mapping procedure is extremely simple and fast and provides object color constancy. Once it has been derived the color mapping can be deployed in real-time to different multi-band image sequences of similar scenes Displaying night-time imagery in natural colors may help human observers to process this type of imagery faster and better, thereby improving situational awareness and reducing detection and recognition times. (C) 2009 Elsevier B.V. All rights reserved.
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