Recovering 3D Structure of Multilayer Transparent Objects from Multi-view Ray Tracing

3D reconstruction of object shape is one of the most important problems in the field of computer vision. Although many methods have been proposed up to now, the 3D reconstruction of transparent objects is still a very difficult unsolved problem. In particular, if the transparent objects have multiple layers with different refraction properties, the recovery of the 3D structure of transparent objects is quite difficult. In this paper, we propose a method for recovering the 3D structure of multilayer transparent objects. For this objective we introduce a new representation of 3D space by using a boxel with refraction properties, and recovering the refraction properties of each boxel by using the ray tracing. The efficiency of the proposed method is shown by some preliminary experiments.