Accuracy improvement of the 3D rotation angle estimation of characters by the probabilistic interpolation
| Project/Area Number |
16K00236
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Perceptual information processing
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| Research Institution | Mie University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
大山 航 九州大学, システム情報科学研究院, 准教授 (10324550)
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| Project Period (FY) |
2016-04-01 – 2019-03-31
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| Project Status |
Completed (Fiscal Year 2018)
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| Budget Amount *help |
¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2018: ¥130,000 (Direct Cost: ¥100,000、Indirect Cost: ¥30,000)
Fiscal Year 2017: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2016: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
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| Keywords | 文字認識 / 回転角度推定 / 車番認識 / カメラベース認識 / 確率的補間 / ３次元回転文字認識 / カメラベース文字認識 / ３次元回転角度推定 / 日本語文字認識 / カメラベース / 3次元回転 / グラフマッチング / 言語推定 / ３次元回転 / 画像、文章、音声等認識 / 機械学習 |
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| Outline of Final Research Achievements |
We improved the precision of three-dimensional rotation angle estimation of the character without increasing memory usage by reducing feature vector size and employing the probabilistic interpolation of the rotational angle. And we proposed the camera-based license plate recognition for the image photographed from various direction by the matching between the combination of character candidates and the template of license plate. In addition, we proposed the method to detect and recognize kanji character consists of multiple connecting components by combinational optimization.
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| Academic Significance and Societal Importance of the Research Achievements |
記憶容量の削減と３次元回転角度推定の精度向上により、日本語の３次元回転不変文字認識が可能となり、従来は実現不可能であった日本語の各種看板や道路案内標識を様々な角度から自在に認識することができるようになる。その結果、動画からのリアルタイムの翻訳案内システムやカメラの設置場所を選ばない車番認識システムによる駐車場の入出管理など、カメラベース文字認識システムの発展に大きく寄与する。
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Report
(4 results)
Research Products
(14 results)
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[Presentation] License-Plate Recognition via 3 Dimensional OCR2016
Author(s)
Yuki Nakamura, Wataru Ohyama, Tetsushi Wakabayashi, Fumitaka Kimura
Organizer
2nd International Conference on Information Technology (ICIT2016)
Place of Presentation
DITC, Kemaman, Terengganu, Malaysia
Year and Date
2016-08-06
Related Report
Int'l Joint Research
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