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Variance Window Based Car License Plate Localization
Journal of Computer and Communications
In this paper, a new method for discovering the candidate car license plate locations is presented. First, the image is decomposed using a Haar wavelet to get the HL band with vertical edges. Then, the HL band image is binarized using an Otsu threshold. Next a black top-hat algorithm is applied to reduce the effects of interfering large continuous features other than the license plate. At this time, a moving window based modified variance score calculation is made for areas with white pixels.doi:10.4236/jcc.2014.29009 fatcat:v4icno3zq5as3o5vz634jqkm4m