| 摘要 |
FIELD: printing.SUBSTANCE: invention relates to a method of identification of printing on digital image. The method of identification of printing on digital image is that the object image fed into the computer is preliminary brought to normal view, standard for this method, - zooming, centring, at that the location of the object image, corresponding to the impression of the seal, is searched, and then the object image is brought to the normal view, and then the brightness values of the image pixels are converted from the Cartesian to the polar coordinate system with the introduction of excessiveness, the borders of abrupt transitions in brightness values of the image pixels are calculated, the characteristic feature vector is formed, the identity of the object image of one of the standard seals is determined by recognizing based on support vector method.EFFECT: technical result is to reduce the span time for image recognition of printing.4 dwg |
