Extraction of Geometric and Photometric information from 8-D Light Transport

2016 Fiscal Year Final Research Report

• Project/Area Number: 26540085
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Perceptual information processing
• Research Institution: Nara Institute of Science and Technology
• Principal Investigator: Mukaigawa Yasuhiro 奈良先端科学技術大学院大学, 情報科学研究科, 教授 (60294435)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: 光伝播 / 光線空間 / プロジェクタ・カメラシステム / 反射屈折光学系 / ToFカメラ

Outline of Final Research Achievements

This research aims to analyze geometric and photometric properties of subsurface scattering and volume scattering from 8-D light transport which consists of 4-D light field illumination and 4-D light field recording. For the illumination, we have developed an effective calibration method and a new illumination system which simultaneously projects different patterns onto different depths. For recording, a light field camera is used and the measured 4-D light field is analyzed by a new segmentation method which introduces spatial and angular smoothness as a constraint. Moreover, we have tried temporal analysis of light transport with a new temporal dimension using a ToF camera which becomes common during the research period and we have confirmed that material can be estimated from the time delay of light transport.

Free Research Field

コンピュータビジョン