4.6 Article

Towards Automatic License Plate Detection

期刊

SENSORS
卷 22, 期 3, 页码 -

出版社

MDPI
DOI: 10.3390/s22031245

关键词

license plate detection; estimation; segmentation; object tracking; vehicle detection

资金

  1. COMSATS University Islamabad, Pakistan
  2. Iqra University, Pakistan
  3. Universiti Teknologi PETRONAS joint research Project [015ME0-228]

向作者/读者索取更多资源

This paper proposes an efficient license plate detection method by combining Faster R-CNN with digital image processing techniques. The method first detects vehicles using Faster R-CNN and then analyzes the located vehicle using a robust License Plate Localization Module. The module uses color segmentation, HSV image processing, morphological filtering, and dimension analysis to detect the license plate and achieves high accuracy in less execution time.
Automatic License Plate Detection (ALPD) is an integral component of using computer vision approaches in Intelligent Transportation Systems (ITS). An accurate detection of vehicles' license plates in images is a critical step that has a substantial impact on any ALPD system's recognition rate. In this paper, we develop an efficient license plate detecting technique through the intelligent combination of Faster R-CNN along with digital image processing techniques. The proposed algorithm initially detects vehicle(s) in the input image through Faster R-CNN. Later, the located vehicle is analyzed by a robust License Plate Localization Module (LPLM). The LPLM module primarily uses color segmentation and processes the HSV image to detect the license plate in the input image. Moreover, the LPLM module employs morphological filtering and dimension analysis to find the license plate. Detailed trials on challenging PKU datasets demonstrate that the proposed method outperforms few recently developed methods by producing high license plates detection accuracy in much less execution time. The proposed work demonstrates a great feasibility for security and target detection applications.

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