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License plate recognition can be widely used in traffic direction of Olympic Games, traffic management, and so on. Because the picture of license plate is complex, the character segmentation error is a main cause of decrease of license plate recognition rate. Research on denoising and character segmentation algorithm is crucial in the license plate recognition system. Connected domain analysis method,...
There are some limitation in the traditional denoising method. In the condition of low signal noise ratio, not only cannot greatly improve the signal noise ratio but the position of the signal is blured after the process of filter. Denoising method based on wavelet transform is proposed to solve the problem. The problem of how to choose a quotiety of wavelet transform domain is emphatically discussed...
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