| Presentation | 2007-10-26 A Study on Optimal Binarization and Distortion-Tolerant Recognition of Color Characters in Scene Images Minoru YOKOBAYASHI, Toru WAKAHARA, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | The proposed method of optimal binarization of color characters in scene images is based on selection of one optimal projection axis in the RGB color space using Otsu's criterion and decision between figure and background using the black-white ratio along the image periphery and common characteristics of characters. Regarding distortion-tolerant recognition of binarized characters we compare our global affine transformation (GAT) correlation method against the well-known tangent distance. Experiments are made on a total of 698 character images extracted from the ICDAR 2003 robust OCR dataset, and we discuss the state-of-the-art and remaining problems. Also, against rotation ranging from -45 degrees to +45 degrees as applied to template images the GAT correlation method is found to be much robuster than the tangent distance. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Optimal Binarization / Otsu's Criterion / Distortion-Tolerant Matching / Tangent Distance / GAT Correlation |
| Paper # | PRMU2007-110 |
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| Conference Information | |
| Committee | PRMU |
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| Conference Date | 2007/10/18(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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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) | A Study on Optimal Binarization and Distortion-Tolerant Recognition of Color Characters in Scene Images |
| Sub Title (in English) | |
| Keyword(1) | Optimal Binarization |
| Keyword(2) | Otsu's Criterion |
| Keyword(3) | Distortion-Tolerant Matching |
| Keyword(4) | Tangent Distance |
| Keyword(5) | GAT Correlation |
| 1st Author's Name | Minoru YOKOBAYASHI |
| 1st Author's Affiliation | Graduate School of Computer and Information Sciences, Hosei University() |
| 2nd Author's Name | Toru WAKAHARA |
| 2nd Author's Affiliation | Graduate School of Computer and Information Sciences, Hosei University |
| Date | 2007-10-26 |
| Paper # | PRMU2007-110 |
| Volume (vol) | vol.107 |
| Number (no) | 281 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |