Kenichiro Tanaka^1,2, Yasuhiro Mukaigawa², Hiroyuki Kubo², Yasuyuki Matsushita¹, Yasushi Yagi^1
1 Osaka University, ² Nara Institute of Science and Technology

CVPR 2016 : [Paper, Open access (PDF)], [Supplementary (PDF)], [Poster (PDF)], IEEE Xplore, [bibtex]
@InProceedings{ Tanaka_2016_CVPR,
author = {Tanaka, Kenichiro and Mukaigawa, Yasuhiro and Kubo, Hiroyuki and Matsushita, Yasuyuki and Yagi, Yasushi},
title = {Recovering Transparent Shape from Time-of-Flight Distortion},
booktitle = {Computer Vision and Pattern Recognition (CVPR), 2016 IEEE Conference on},
pages = {4387--4395},
month = {June},
year = {2016}
}
 

Abstract

  This paper presents a method for recovering shape and normal of a transparent object from a single viewpoint using a Time-of-Flight (ToF) camera. Our method is built upon the fact that the speed of light varies with the refractive index of the medium and therefore the depth measurement of a transparent object with a ToF camera may be distorted. We show that, from this ToF distortion, the refractive light path can be uniquely determined by estimating a single parameter. We estimate this parameter by introducing a surface normal consistency between the one determined by a light path candidate and the other computed from the corresponding shape. The proposed method is evaluated by both simulation and real-world experiments and shows faithful transparent shape recovery.

Paper

Poster

Slide

I had a talk on MIRU 2016 (Japanese domestic conference). Below is a slide I used for that talk.