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Most active scene recovery techniques assume that a scene point is illuminated only directly by the illumination source. Consequently, global illumination effects due to inter-reflections, sub-surface scattering and volumetric scattering introduce strong biases in the recovered scene shape. Our goal is to recover scene properties in the presence of global illumination. To this end, we study the interplay between global illumination and the depth cue of illumination defocus. By expressing bothdoi:10.1109/cvpr.2009.5206855 dblp:conf/cvpr/GuptaTNZ09 fatcat:aaaesswrt5actaopj3l4fzxx4y