| Presentation | 1999/1/21 Best Marker Pattern Design for Recognition by Adjacency Ratio: Theoretical Analysis Yasushi Kanazawa, Chikara Matsunaga, Kenichi Kanatani, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | With a view to reconstructing 3-D shapes of real objects and environments for virtual reality realization, we consider the problem of computing the position and internal parameters of a continuously moving camera(simultaneous calibration). For this purpose, we design a special layered marker pattern such that the position of each layer can be identified easily by computing the ratios of adjacent intervals. We generate the ratio of adjacent intervals by a Markov process. Analyzing the statistical behavior of the adjaceney ratios in the presence of noise, we derive a theoretically optimal transition probability density. We also analyze the theoretical probability densities of the resulting intervals and adjacency ratios and derive an upper bound on the recognition capability. We conduct experiments to confirm our analysis. Finally, we introduce additional techniques to improve the performance further and observe their effects by experiments. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | camera calibration / mixed reality / virtual studio / Markov process / error analysis / adjacency ratio |
| Paper # | PRMU98-181 |
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| Conference Information | |
| Committee | PRMU |
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| Conference Date | 1999/1/21(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | |
| Vice Chair | |
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| Paper Information | |
| Registration To | Pattern Recognition and Media Understanding (PRMU) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Best Marker Pattern Design for Recognition by Adjacency Ratio: Theoretical Analysis |
| Sub Title (in English) | |
| Keyword(1) | camera calibration |
| Keyword(2) | mixed reality |
| Keyword(3) | virtual studio |
| Keyword(4) | Markov process |
| Keyword(5) | error analysis |
| Keyword(6) | adjacency ratio |
| 1st Author's Name | Yasushi Kanazawa |
| 1st Author's Affiliation | Department of Knowledge-based Information Engineering Toyohashi University of Technology() |
| 2nd Author's Name | Chikara Matsunaga |
| 2nd Author's Affiliation | Broadcast Division, FOR-A Co.Ltd |
| 3rd Author's Name | Kenichi Kanatani |
| 3rd Author's Affiliation | Department of Computer Science Gunma University |
| Date | 1999/1/21 |
| Paper # | PRMU98-181 |
| Volume (vol) | vol.98 |
| Number (no) | 527 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |