Inverse global illumination: recovering reflectance models of real scenes from photographs

摘要

In this paper we present a method for recoveryign the reflectance properties of all surfaces in a real scene from a sparse set of photographs,taking into account outh direct and indirect illumination.The result is a lighting-independent model of the scene's geometry and reflectance properties,which cna be rendered with arbitrary modificatiosn to structure and lighting via trditioal rendering methods.Our technique models reflectance with a low parameter reflectance model,and allows diffuse albedo to vary arbitrarily over surfaces while assuming that non-diffuse characteristics remain constant across particular regions.