Aiming at a series of the problems in the License Plate Location, by comparing with the existing License Plate Location techniques, this paper puts forward a BP Neural Network algorithm. The algorithm improves the sigmoid Exciting Function and Gradient Estimation Accuracy. Meanwhile, some factors, containing the lack of light, bad environment, unclear plate background, worn plate, image slope and other disturbing factors, lead to the inaccuracy of locating, faint plate and longer reaction time. The paper ma...
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