| Presentation | 2006-01-20 An Improvement of License Plate Recognition Algorithm Considering Image Brightness and Character Arrangements Yosuke SHINOHARA, Jun KAWASHIMA, Nobuo FUNABIKI, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | The automatic recognition of characters and numbers on license plates for vehicles is very important for various applications such as vehicle managements in parking lots, automatic fare collections in toll roads, traffic flow measurements and congestion surveillance on roads, and identifications of illegal parking vehicles on streets. In this paper, we propose an improvement of the license number plate recognition algorithm by improving the binarization process and the character recognition area process that are the keys determining the recognition accuracy. In the former process, the histogram of pixel brightness obtained from the input image is classified into three patterns according to the shape, and the different thresholds are used in each pattern. In the latter process, extractions of noisy character regions are enabled by extrapolating them from successfully extracted regions using their relative positions. The effectiveness of our proposal is verified by applications to sample license images. |
| Keyword(in Japanese) | (See Japanese page) |
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| Paper # | PRMU2005-150,HIP2005-120 |
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| Committee | HIP |
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| Conference Date | 2006/1/13(1days) |
| Place (in Japanese) | (See Japanese page) |
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| Topics (in Japanese) | (See Japanese page) |
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| Registration To | Human Information Processing (HIP) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | An Improvement of License Plate Recognition Algorithm Considering Image Brightness and Character Arrangements |
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| 1st Author's Name | Yosuke SHINOHARA |
| 1st Author's Affiliation | Faculty of Engineering, Okayama University() |
| 2nd Author's Name | Jun KAWASHIMA |
| 2nd Author's Affiliation | Faculty of Engineering, Okayama University |
| 3rd Author's Name | Nobuo FUNABIKI |
| 3rd Author's Affiliation | Faculty of Engineering, Okayama University |
| Date | 2006-01-20 |
| Paper # | PRMU2005-150,HIP2005-120 |
| Volume (vol) | vol.105 |
| Number (no) | 536 |
| Page | pp.pp.- |
| #Pages | 6 |
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