کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
530273 869755 2015 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A novel license plate location method based on wavelet transform and EMD analysis
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر چشم انداز کامپیوتر و تشخیص الگو
پیش نمایش صفحه اول مقاله
A novel license plate location method based on wavelet transform and EMD analysis
چکیده انگلیسی

●A novel license plate location method is proposed.●The proposed method is based on wavelet transform and EMD analysis.●The proposed method can locate different types of license plates under some challenging situations.●The correct detection rate is improved while the runtime is relatively short compared to some traditional approaches.

Although various license plate location methods have been proposed in the past decades, their accuracy and ability to deal with different types of license plates still need to be improved. A robust license plate location method can raise the accuracy of the whole license plate recognition procedure. This paper proposes a robust method based on wavelet transform and empirical mode decomposition (EMD) analysis to search for the location of a license plate in an image to deal with some challenging problems in practice such as illumination changes, complex background and perspective change. By applying wavelet transform on a vehicle image and projecting the acquired details of the image, a wave crest that indicates the license plate will be generated. In order to locate the desired wave crest in the nonlinear and non-stationary projection dataset, EMD analysis is applied. Using the reconstructed projection data and the Hilbert transform of intrinsic mode function components, the position of the license plate is detected. Comprehensive experiments show that this method can locate the positions of various types of license plates with a high accuracy of 97.91% and a relatively short running time.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Pattern Recognition - Volume 48, Issue 1, January 2015, Pages 114–125
نویسندگان
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