Learning-based license plate detection in vehicle image database

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Journal Article
International Journal of Intelligent Information and Database Systems, 2007, 1 (2), pp. 228 - 243
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This paper proposes a learning-based algorithm to detect license plates of vehicles from vehicle image database. There are three main contributions in this paper. The first contribution is to define a novel vertical edge map, which makes the image processing more effectively. The second contribution is to propose a learning-based cascade classifier composing of two kinds of sub-classifiers, which makes the system very robust. The third contribution is to experimentally estimate the parameter of scaling factor and chose an optimal one for the algorithm to seek a good balance between detection rate and processing time. © 2007 Inderscience Enterprises Ltd.
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