Anti-fake method and application using random spray coverage pattern and digital image contrast technology
A digital image and graphics technology, applied in the field of anti-counterfeiting, can solve problems such as restricting the development of anti-counterfeiting technology, lens distortion, etc., achieve high market promotion and application value, simple operation, easy query and verification
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[0080] See Figure 13 , Figure 14 , randomly spray anti-counterfeiting graphics on the barcode, the magnification of the vertical axis is 1000, Figure 13 It is the effective data of 5 spots obtained by calculating the standard anti-counterfeiting graphics through software, and Figure 14 For the anti-counterfeiting graphics to be inspected taken by the mobile phone, the software automatically delineates the position of the barcode and processes it in proportion. The data are as follows:
[0081]
[0082] In this embodiment, the algorithm executed by the computer is artificially set, the absolute error of the abscissa does not exceed 1 aspect ratio, the relative percentage error does not exceed 1%, and the ordinate (after multiplying the magnification factor of 1000), the absolute error does not exceed 30 vertical ratio, the relative percentage error is not more than 3%, all are authentic. And the above-mentioned data accord with, so it is concluded that the product re...
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