Time-to-Contact in Scattering Media

Laksmita RAHADIANTI  Wooseong JEONG  Fumihiko SAKAUE  Jun SATO  

Publication
IEICE TRANSACTIONS on Information and Systems   Vol.E100-D   No.3   pp.564-573
Publication Date: 2017/03/01
Online ISSN: 1745-1361
Type of Manuscript: PAPER
Category: Image Recognition, Computer Vision
Keyword: 
time-to-contact,  3D distance,  scattering media,  single scattering model,  

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Summary: 
In this paper we propose a method for estimating time-to-contact in scattering media. Images taken in scattering media are often unclear and blurry, making it difficult to detect appropriate geometric information from these images for computing the 3 dimensional properties of the scene. Therefore, instead of searching for geometric information, we attempt to use photometric information instead. In our approach, we use the observed image intensity. The method proposed in this paper is able to utilize the effect of scattering media on the resultant image and estimate the time-to-contact toward objects without any prior knowledge of the scene, cameras, and the scattering media. This method is then evaluated using simulated and real images.