Specular reflection reduction with multi-flash imaging
Feris, R.; Raskar, R.; Kar-Han Tan; Turk, M.
Computer Graphics and Image Processing, 2004. Proceedings. 17th Brazilian Symposium on
Volume , Issue , 17-20 Oct. 2004 Page(s): 316 - 321
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Summary: We present a novel method to reduce the effect of specularities in digital images. Our approach relies on a simple modification of the capture setup: a multi-flash camera is used to take multiple pictures of the scene, each one with a differently positioned light source. We then formulate the problem of specular highlights reduction as solving a Poisson equation on a gradient field obtained from the input images. Experimental results are demonstrated on real and synthetic images. The entire setup can be conceivably packaged into a self-contained device, no larger than existing digital cameras.

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