NDLI: Real-time license plate detection system with 2-level 2D Haar Wavelet transform and Wiener-deconvolution vertical edge enhancement

Content Provider	IEEE Xplore Digital Library
Author	Shih-Jui Yang Jia-Bin Jiang Ming-Kan Wu Ho, C.C.
Copyright Year	2013
Description	Author affiliation: Dept. of Electr. Eng., Nat. Yunlin Univ. of Sci. & Technol., Douliou, Taiwan (Shih-Jui Yang; Jia-Bin Jiang; Ming-Kan Wu; Ho, C.C.)
Abstract	Against lots of conventional vertical-edge-based License Plate Detection (LPD) systems, this paper presents a robust and real-time LPD system to differentiate the strength and density of vertical edges between the license plate region and non-plate regions. The proposed LPD system consisting of 2-level 2D Haar Wavelet transform and Wiener-deconvolution vertical edge enhancement not only can highlight the irregularly-distributed vertical edges of the license plate region, but also can suppress the regularly-interlaced ones of the non-plate regions, like radiator grilles or trench grates. Experimental results show the proposed LPD system achieves better detection rate than numerous conventional vertical-edge-based LPD systems, under various complex conditions. Thereby, the License Plate Recognition system based on the proposed LPD system is also verified to accomplish superior recognition rate at the cost of only 0.3 sec per frame on the dual-core smartphone platform.
Starting Page	1
Ending Page	5
File Size	500847
Page Count	5
File Format	PDF
e-ISBN	9781479904341
DOI	10.1109/ICICS.2013.6782805
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-12-10
Publisher Place	Taiwan
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Licenses Image edge detection Discrete wavelet transforms Deconvolution Real-time systems Vehicles vertical edge license plate detection license plate recognition
Content Type	Text
Resource Type	Article

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