Automatic License Plate Recognition

Shyang Lih Chang, Li Shien Chen, Yun Chung Chung, Sei Wan Chen

研究成果: 雜誌貢獻文章

503 引文 (Scopus)

摘要

Automatic license plate recognition (LPR) plays an important role in numerous applications and a number of techniques have been proposed. However, most of them worked under restricted conditions, such as fixed illumination, limited vehicle speed, designated routes, and stationary backgrounds. In this study, as few constraints as possible on the working environment are considered. The proposed LPR technique consists of two main modules: a license plate locating module and a license number identification module. The former characterized by fuzzy disciplines attempts to extract license plates from an input image, while the latter conceptualized in terms of neural subjects aims to identify the number present in a license plate. Experiments have been conducted for the respective modules. In the experiment on locating license plates, 1088 images taken from various scenes and under different conditions were employed. Of which, 23 images have been failed to locate the license plates present in the images; the license plate location rate of success is 97.9%. In the experiment on identifying license number, 1065 images, from which license plates have been successfully located, were used. Of which, 47 images have been failed to identify the numbers of the license plates located in the images; the identification rate of success is 95.6%. Combining the above two rates, the overall rate of success for our LPR algorithm is 93.7%.

原文英語
頁(從 - 到)42-53
頁數12
期刊IEEE Transactions on Intelligent Transportation Systems
5
發行號1
DOIs
出版狀態已發佈 - 2004 三月 1

指紋

Experiments
Lighting

ASJC Scopus subject areas

  • Automotive Engineering
  • Mechanical Engineering
  • Computer Science Applications

引用此文

Automatic License Plate Recognition. / Chang, Shyang Lih; Chen, Li Shien; Chung, Yun Chung; Chen, Sei Wan.

於: IEEE Transactions on Intelligent Transportation Systems, 卷 5, 編號 1, 01.03.2004, p. 42-53.

研究成果: 雜誌貢獻文章

Chang, Shyang Lih ; Chen, Li Shien ; Chung, Yun Chung ; Chen, Sei Wan. / Automatic License Plate Recognition. 於: IEEE Transactions on Intelligent Transportation Systems. 2004 ; 卷 5, 編號 1. 頁 42-53.
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