IGI:
Technical Explanation
§Estimates the incident radiances of the surfaces in a scene.
§Radiance estimate used
to estimate the reflectance properties of the surfaces in the scene, by an iterative procedure
§Reflectance property estimates can then be used re-estimate the incident radiances
§Input to the algorithm:
§geometric model of the scene
§a set of radiance maps taken under known
direct
illumination
§a partitioning of the scene into areas
of similar
non-diffuse reflectance properties used to estimate the reflectance
properties of the surfaces in the scene, by an iterative procedure