%0 Journal Article
%T Specular highlights detection and reduction with multi-flash photography
%A Feris
%A Rogerio
%A Raskar
%A Ramesh
%A Tan
%A Kar-Han
%A Turk
%A Matthew
%J Journal of the Brazilian Computer Society
%D 2006
%I Springer
%R 10.1007/BF03192386
%X 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. the obtained specular reduced image is further refined in a matting process with the maximum composite of 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.
%K specularities
%K multi-flash imaging
%K poisson equation.
%U http://www.scielo.br/scielo.php?script=sci_abstract&pid=S0104-65002006000200003&lng=en&nrm=iso&tlng=en