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Paper Abstract and Keywords
Presentation 2020-03-13 13:00
3D Light Source Direction Estimation from Single Image using A Cylindrical Object for Augmented Reality
Yusuke Mukai, Hiroki Takahashi (UEC)
Abstract (in Japanese) (See Japanese page) 
(in English) In AR technology, it is important to synthesize virtual objects in real space so that users perceive the synthesis image as free of artificiality. Especially, it is the most significant to keep their optical consistency because it can reduce artificiality of the image. In this paper, we estimate external camera parameters from a single image using a cylindrical object and propose a method for estimating a light source direction in three dimensional space by using inverse perspective projection transformation. In addition, we estimated light source directions using the proposed method in a real environment and discussed the merits and demerits of the proposed method and a conventional method by comparing estimation accuracies of both methods.
Keyword (in Japanese) (See Japanese page) 
(in English) AR / Light source direction estimation / Inverse perspective projection transformation / / / / /  
Reference Info. ITE Tech. Rep., vol. 44, no. 10, AIT2020-63, pp. 53-56, March 2020.
Paper # AIT2020-63 
Date of Issue 2020-03-06 (AIT) 
ISSN Print edition: ISSN 1342-6893    Online edition: ISSN 2424-1970
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Conference Information
Committee AIT IIEEJ AS CG-ARTS  
Conference Date 2020-03-13 - 2020-03-13 
Place (in Japanese) (See Japanese page) 
Place (in English) Tokyo University of Technology 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Expressive Japan 2020 
Paper Information
Registration To AIT 
Conference Code 2020-03-AIT-IIEEJ-AS-ARTS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) 3D Light Source Direction Estimation from Single Image using A Cylindrical Object for Augmented Reality 
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Keyword(1) AR  
Keyword(2) Light source direction estimation  
Keyword(3) Inverse perspective projection transformation  
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1st Author's Name Yusuke Mukai  
1st Author's Affiliation The University of Electro-Communications (UEC)
2nd Author's Name Hiroki Takahashi  
2nd Author's Affiliation The University of Electro-Communications (UEC)
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Date Time 2020-03-13 13:00:00 
Presentation Time 15 minutes 
Registration for AIT 
Paper # AIT2020-63 
Volume (vol) vol.44 
Number (no) no.10 
Page pp.53-56 
#Pages
Date of Issue 2020-03-06 (AIT) 


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