An efficient method of license plate location
Pattern Recognition Letters
Region-based license plate detection
Journal of Network and Computer Applications
An Efficient Method of Locating Vehicle License Plate
ICNC '07 Proceedings of the Third International Conference on Natural Computation - Volume 02
A Cascade Framework for a Real-Time Statistical Plate Recognition System
IEEE Transactions on Information Forensics and Security
Automatic license plate recognition
IEEE Transactions on Intelligent Transportation Systems
A License Plate-Recognition Algorithm for Intelligent Transportation System Applications
IEEE Transactions on Intelligent Transportation Systems
License Plate Recognition From Still Images and Video Sequences: A Survey
IEEE Transactions on Intelligent Transportation Systems
PPCA-based license plate detection algorithm
ACM SIGSOFT Software Engineering Notes
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Detecting license plate (LP) is a crucial and inevitable component of the vehicle license plate recognition (VLPR) system. In this paper to select automatically statistical threshold value in HSI color model is proposed. The proposed vehicle license plate detection (VLPD) method consists of two main stages. Initially, HSI color model is adopted for detecting candidate regions. According to different colored LP, these candidate regions may include LP regions; geometrical properties of LP are then used for classification. The proposed method is able to deal with candidate regions under independent orientation and scale of the plate. Finally, the decomposition of candidate regions contains predetermined LP alphanumeric characters by using position in the histogram to verify and detect vehicle license plate (VLP) region. Experimental results show that the proposed method is very effective in coping with different images under the variety of conditions such as complex scenes, illumination changing, distances and varied weather etc.