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License plate location plays an important role in vehicle license plate recognition. This paper presents a real time method of license plate location. First, run length is used for finding the candidate horizontal regions of license plate. Second, we locate the license plates exactly using tamura texture features. In the experiment on locating license plates, 1400 images were taken in various backgrounds...
Double boundary text, also called outlined text, problem is presented when the text boundary has different color with background color and text stroke color. This problem, which frequently occurs in natural text of signboards, imposes another obstacle to the proper extraction of text information. In this paper, an efficient method is proposed based on well-known filling algorithms and characteristics...
Automatic number plate recognition is a real time embedded system which automatically recognizes the license number of vehicles. Such systems require the localization of number plate area in order to identify the characters present on it. This paper presents a feature based methodology for localization of Indian number plates. Since number plate standards are not strictly practiced in India, a large...
Based on the sharing features of a variety of license plates (LP), the vertical edge was first detected by Sobel edge detector. Then, some approaches were adopted to remove the invalid edge regarding the characteristics of edge grayscale jump and edge density, so that the regions having features of LP were preserved. Next, by horizontal and vertical projections and mathematical morphology (MM) operation,...
Based on the sharing features of a variety of license plates (LP), the vertical edge was first detected by sobel color edge detector. Then, some approaches were adopted to adaptively remove the invalid edge regarding the characteristics of edge grayscale jump and edge density, so that the regions having features of LP were preserved. Next, by edge density template matching and the mean and variance...
License plate detection plays an important role in license plate recognition (LPR) system. If license plate can be detected exactly, the character segmentation and recognition can be implemented more precisely and efficiently. In our observation, the illumination affects the result of detecting the license plate. The aim of this paper is to extract more than one license plate from an image and to...
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