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In the use of wavelet transform is to improve the quality of image signature picture is filtered noise from the scanned documents. The features of image. Such as the number of strokes, the size and complexity of the strokes, the pattern still.AVR algorithm, which will make the image properties change, such as the complexity of the strokes will be reduced, because stripes size thicker. That is the reason why, the variance of the image is decreased when through AVR algorithm.
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