Novel depth cues from light scattering

摘要

The scattering of light by particles present in the medium through which it is travelling gives clues allowing us to infer structural information about the observed scene. Based on a single-scattering model of light, we review related work and propose a novel method for computing the 3D structure of a scene from two images captured in different conditions of visibility. We also present two new methods for identifying occlusion edges from the same images. The originality of the proposed methods is based on the study of spatial variations of intensity, particularly how they are affected by a change in visibility conditions, while existing methods rely on intensities. We validate our work with experimental results produced from both synthetic and real scenes.