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Paper Abstract and Keywords
Presentation 2024-06-05 10:10
Utilizing 3D CG-based Reverse Projection Photogrammetry for Gait-based Verification Analysis
Daisuke Imoto, Masato Asano, Wataru Sakurai, Masakatsu Honma, Kenji Kurosawa (NRIPS)
Abstract (in Japanese) (See Japanese page) 
(in English) One-by-one gait-based biometric person verification is increasingly used in the forensic science domain, but one of the problems is necessity of labor-intensive on-site procedures for estimating viewing direction of camera with respect to the pedestrian position/orientation. In this paper, we propose a method that utilizes 3D CG-based reverse projection photogrammetry to estimate the viewing direction information required for that forensic gait-based verification analysis. Specifically, based on the 3D model data reconstructed by using SfM/Photogrammetry technology, first, the pedestrian-oriented 3D coordinate system is decided as the world coordinate system, and second, the camera parameters with respect to that world coordinate system, i.e. the viewing direction of the camera with respect to the pedestrian, are estimated. As a result of verification in a laboratory environment, the proposed method was found to be as accurate as the conventional method which involves elaborate on-site procedures. Although the proposed method requires more in-silico procedures than the conventional method, it has the advantage of abbreviation of a part of on-site elaborate procedure and not having to assume the flatness of the road surface. A further advantage is that it is visually easy to understand based on image reconstruction by reverse projection photogrammetry.
Keyword (in Japanese) (See Japanese page) 
(in English) Reverse Projection Photogrammetry / 3D CG / Gait Analysis / Silhouette / Viewing Direction / Camera Calibration / /  
Reference Info. ITE Tech. Rep., vol. 48, pp. 1-4, June 2024.
Paper #  
Date of Issue 2024-05-29 (AIT) 
ISSN Online edition: ISSN 2424-1970
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Conference Information
Committee IIEEJ AIT  
Conference Date 2024-06-05 - 2024-06-05 
Place (in Japanese) (See Japanese page) 
Place (in English) Tokyo Information Design Professional University 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To IIEEJ 
Conference Code 2024-06-IIEEJ-AIT 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Utilizing 3D CG-based Reverse Projection Photogrammetry for Gait-based Verification Analysis 
Sub Title (in English)  
Keyword(1) Reverse Projection Photogrammetry  
Keyword(2) 3D CG  
Keyword(3) Gait Analysis  
Keyword(4) Silhouette  
Keyword(5) Viewing Direction  
Keyword(6) Camera Calibration  
Keyword(7)  
Keyword(8)  
1st Author's Name Daisuke Imoto  
1st Author's Affiliation Nartional Research Institute of Police Science (NRIPS)
2nd Author's Name Masato Asano  
2nd Author's Affiliation Nartional Research Institute of Police Science (NRIPS)
3rd Author's Name Wataru Sakurai  
3rd Author's Affiliation Nartional Research Institute of Police Science (NRIPS)
4th Author's Name Masakatsu Honma  
4th Author's Affiliation Nartional Research Institute of Police Science (NRIPS)
5th Author's Name Kenji Kurosawa  
5th Author's Affiliation Nartional Research Institute of Police Science (NRIPS)
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Speaker Author-1 
Date Time 2024-06-05 10:10:00 
Presentation Time 20 minutes 
Registration for IIEEJ 
Paper # AIT2024-142 
Volume (vol) vol.48 
Number (no) no.16 
Page pp.1-4 
#Pages 4 
Date of Issue 2024-05-29 (AIT) 

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