Analysis method of multispectral image of note
A multi-spectral image and analysis method technology, applied in the field of new multi-function money detectors, can solve problems such as difficulty in improving counterfeit money, and achieve the effects of facilitating management and analysis and improving accuracy
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[0062] The following takes the fifth set of RMB 100 banknotes as an example to illustrate the specific identification process of banknotes. When the banknotes enter the banknote detector, the orientation of the banknotes is judged by using the magnetic signal and the infrared tube, and the image is obtained. Next, banknote vertex detection is performed by first detecting the four sides of the banknote, and then calculating the four intersection points to be the vertex positions of the banknote. First detect the upper edge, if the banknote image width is 1440 pixels, then the effective upper edge of the banknote can be from the 480th column to the 960th column. Then every 10 columns, scan from top to bottom to find the position of gradient mutation, and use this pixel as an edge point. Then calculate the slope of the front and rear edge points, and sort the slopes to pick out the edge points with the same slope. Finally, use these key edge points to carry out straight line fi...
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