Abstract
We introduce the light localization problem. A scene
is illuminated by a set of unobserved isotropic point
lights. Given the geometry, materials, and illuminated
appearance of the scene, the light localization problem
is to completely recover the number, positions, and intensities of the lights. We first present a scene transform that identifies likely light positions. Based on this
transform, we develop an iterative algorithm to locate
remaining lights and determine all light intensities. We
demonstrate the success of this method in a large set of
2D synthetic scenes, and show that it extends to 3D, in
both synthetic scenes and real-world scenes