| Presentation | 2012-03-08 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, Mitsuyoshi Murata, Toshiro Oitate, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In this report, a fast and automatic metal sheet inspection system by digital still camera is introduced. This system acquires 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 residual 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) |
| Keyword(in English) | Radial distortion model / Phase only correlation(POC) / Camera calibration / Projection transform |
| Paper # | CAS2011-107,SIP2011-127,CS2011-99 |
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| Committee | CAS |
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| Conference Date | 2012/3/1(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Circuits and Systems (CAS) |
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| Language | JPN |
| 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 |
| 1st Author's Name | Shinya Kitazawa |
| 1st Author's Affiliation | Faculty of Engineering, Niigata University() |
| 2nd Author's Name | Toru Washizu |
| 2nd Author's Affiliation | Faculty of Engineering, Niigata University |
| 3rd Author's Name | Hidenori Watanabe |
| 3rd Author's Affiliation | Faculty of Engineering, Niigata University |
| 4th Author's Name | Kotaro Sato |
| 4th Author's Affiliation | Faculty of Engineering, Niigata University |
| 5th Author's Name | Norihisa Terasawa |
| 5th Author's Affiliation | Faculty of Engineering, Niigata University |
| 6th Author's Name | Akira Hirosawa |
| 6th Author's Affiliation | Faculty of Engineering, Niigata University |
| 7th Author's Name | Shogo Muramatsu |
| 7th Author's Affiliation | Faculty of Engineering, Niigata University |
| 8th Author's Name | Takamasa Suzuki |
| 8th Author's Affiliation | Faculty of Engineering, Niigata University |
| 9th Author's Name | Mitsuyoshi Murata |
| 9th Author's Affiliation | Techno Care Corporation |
| 10th Author's Name | Toshiro Oitate |
| 10th Author's Affiliation | Totsuka Metal Industry Corporation |
| Date | 2012-03-08 |
| Paper # | CAS2011-107,SIP2011-127,CS2011-99 |
| Volume (vol) | vol.111 |
| Number (no) | 465 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |