A PROPOSAL OF POSITION ERROR CORRECTION FOR VEIN IMAGES USING LOG-POLAR MAPPING
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Accession number;07A0187175
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| Title;A PROPOSAL OF POSITION ERROR CORRECTION FOR VEIN IMAGES USING LOG-POLAR MAPPING |
| Author;
HASEGAWA MAKOTO
(Kinki Univ., Higashihiroshima, Jpn)
MIKAWA KENJI
(Niigata Univ.)
IWATA EIZABURO
(Universal Robot Co., Ltd.)
HIROSE HARUTO
(Universal Robot Co., Ltd.)
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Journal Title;IEIC Technical Report (Institute of Electronics, Information and Communication Engineers)
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Journal Code:S0532B
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ISSN:0913-5685
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VOL.106;NO.448(IE2006 138-184);PAGE.7-12(2007)
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| Figure&Table&Reference; |
| Pub. Country;Japan |
| Language;English |
| Abstract;In vein certification systems, the difference of distance between a hand and a camera, translation gaps, rotation gaps, and slants of the vein surface with the camera optical axis are problems. These position errors are corrected using log-polar mapping. We allocate the vein image so that a characteristic point becomes a center in the image at preprocessing, and execute translation for fine-tuning at the correction process. All corrections are integrated into three operations. The computational complexity for rotation by log-polar mapping is compared with a method using an affine transform. Herein, we describe our vein certification system using log-polar mapping. (author abst.) |
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