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| Presentation | 2019-12-20 14:45 Non-Orthogonal Cross Point Detection with Function and Numerical Models Nobuhiko Wakai (Panasonic), Takeo Azuma (OmniVision Technologies)  PRMU2019-60 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | This paper studies non-orthogonal cross point detection problem for a fish-eye camera calibration. We suggest that cross point detector for checker pattern images which captured with fish-eye camera. Our method estimates cross points with cascaded two steps. First, expanded logistic function using two lines parameterized with their rotations to fit checker patters as 3-dimentional shapes composed of two-dimensional pixel coordinates and pixel values. The logistic function is differentiable and used for searching parameters by decent algorithms to detect cross point roughly. Second, A numerical model is defined by areas separated with higher and lower pixel values. This numerical model is fitted for three-dimensional and parameterized for accumulated pixel values to express subpixel resolution. Experiment results in simulations show that our proposed method detects cross points with 0.05 pixels in root-mean-square error. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Cross Point Detection / Corner Detection / Fish-eye Camera / Camera Calibration / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 119, no. 347, PRMU2019-60, pp. 87-92, Dec. 2019. | |
| Paper # | PRMU2019-60 | |
| Date of Issue | 2019-12-12 (PRMU) | |
| ISSN | Online edition: ISSN 2432-6380 | |
| Copyright and reproduction |
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) | |
| Download PDF | PRMU2019-60 |
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| Conference Information | |
| Committee | PRMU |
| Conference Date | 2019-12-19 - 2019-12-20 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Paper Information | |
| Registration To | PRMU |
| Conference Code | 2019-12-PRMU |
| Language | English (Japanese title is available) |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Non-Orthogonal Cross Point Detection with Function and Numerical Models |
| Sub Title (in English) | |
| Keyword(1) | Cross Point Detection |
| Keyword(2) | Corner Detection |
| Keyword(3) | Fish-eye Camera |
| Keyword(4) | Camera Calibration |
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| 1st Author's Name | Nobuhiko Wakai |
| 1st Author's Affiliation | Panasonic Corporation (Panasonic) |
| 2nd Author's Name | Takeo Azuma |
| 2nd Author's Affiliation | OmniVision Technologies, Inc. (OmniVision Technologies) |
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| Speaker | Author-1 |
| Date Time | 2019-12-20 14:45:00 |
| Presentation Time | 15 minutes |
| Registration for | PRMU |
| Paper # | PRMU2019-60 |
| Volume (vol) | vol.119 |
| Number (no) | no.347 |
| Page | pp.87-92 |
| #Pages | 6 |
| Date of Issue | 2019-12-12 (PRMU) |
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