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Paper Abstract and Keywords
Presentation 2012-03-08 09:40
Geometrical Distortion Estimation and Compensation for High Precision Metal Sheet Inspection System with Digital Still Camera
Shinya Kitazawa, Toru Washizu, Hidenori Watanabe, Kotaro Sato, Norihisa Terasawa, Akira Hirosawa, Shogo Muramatsu, Takamasa Suzuki (Niigata Univ.), Mitsuyoshi Murata (TechnoCare Corp.), Toshiro Oitate (Totsuka Metal Industry Corp.)
Abstract (in Japanese) (See Japanese page) 
(in English) In this report, a fast and automatic metal sheet inspection system by digital still camera is introduced. This system aquires a metal sheet image with a single digital still camera, inspects the image and detects errors by comparing with the layout data. Since a digital still camera yields particular lens distortions, geometrical undistortion process is required in order to achieve high precision inspection. In this research, it is proposed to combine the camera calibration with a radial distortion model and detail variation in order to achieve high precision distortion estimation. After undistortion by the radial distortion model, the detail variation is estimated by phase only correlation(POC). Futhermore, errors resulted from thickness of metal sheet is also compensated simultaneously. In order to confirm the significance of this inspection system, the accuracy is evaluated.
Keyword (in Japanese) (See Japanese page) 
(in English) Radial distortion model / Phase only correlation(POC) / Camera calibration / projection transform / / / /  
Reference Info. IEICE Tech. Rep., vol. 111, no. 466, SIP2011-127, pp. 1-6, March 2012.
Paper # SIP2011-127 
Date of Issue 2012-03-01 (CAS, SIP, CS) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380

Conference Information
Committee CAS CS SIP  
Conference Date 2012-03-08 - 2012-03-09 
Place (in Japanese) (See Japanese page) 
Place (in English) The University of Niigata 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Network Processor, Signal Processing for communication, and Wireless LAN/PAN, etc. 
Paper Information
Registration To SIP 
Conference Code 2012-03-CAS-CS-SIP 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Geometrical Distortion Estimation and Compensation for High Precision Metal Sheet Inspection System with Digital Still Camera 
Sub Title (in English)  
Keyword(1) Radial distortion model  
Keyword(2) Phase only correlation(POC)  
Keyword(3) Camera calibration  
Keyword(4) projection transform  
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1st Author's Name Shinya Kitazawa  
1st Author's Affiliation Niigata University (Niigata Univ.)
2nd Author's Name Toru Washizu  
2nd Author's Affiliation Niigata University (Niigata Univ.)
3rd Author's Name Hidenori Watanabe  
3rd Author's Affiliation Niigata University (Niigata Univ.)
4th Author's Name Kotaro Sato  
4th Author's Affiliation Niigata University (Niigata Univ.)
5th Author's Name Norihisa Terasawa  
5th Author's Affiliation Niigata University (Niigata Univ.)
6th Author's Name Akira Hirosawa  
6th Author's Affiliation Niigata University (Niigata Univ.)
7th Author's Name Shogo Muramatsu  
7th Author's Affiliation Niigata University (Niigata Univ.)
8th Author's Name Takamasa Suzuki  
8th Author's Affiliation Niigata University (Niigata Univ.)
9th Author's Name Mitsuyoshi Murata  
9th Author's Affiliation TechnoCare Corporation (TechnoCare Corp.)
10th Author's Name Toshiro Oitate  
10th Author's Affiliation Totsuka Metal Industry Corporation (Totsuka Metal Industry Corp.)
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Speaker
Date Time 2012-03-08 09:40:00 
Presentation Time 25 
Registration for SIP 
Paper # IEICE-CAS2011-107,IEICE-SIP2011-127,IEICE-CS2011-99 
Volume (vol) IEICE-111 
Number (no) no.465(CAS), no.466(SIP), no.467(CS) 
Page pp.1-6 
#Pages IEICE-6 
Date of Issue IEICE-CAS-2012-03-01,IEICE-SIP-2012-03-01,IEICE-CS-2012-03-01 


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