Raster application method with anti-duplication function
An application method and anti-copy technology, which is applied in image data processing, instruments, image data processing, etc., can solve problems such as poor anti-counterfeiting, doubts about the anti-counterfeiting of anti-counterfeiting gratings, and difficulty in distinguishing the authenticity of linear gratings, so as to ensure anti-counterfeiting performance and strong The effect of anti-counterfeiting reliability and integrity of latent image information
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Embodiment 1
[0061] see figure 1In this embodiment, a grating application method with an anti-copy function is provided, comprising the following steps:
[0062] Step (1), select the source image and anti-counterfeiting identification
[0063] Select the source image: select a dark tone image whose color mode is CMYK, resolution is 2450dpi, and size is 4×4.8cm, and name it "source image.tif";
[0064] Set the anti-counterfeiting mark: In this embodiment, the anti-counterfeiting mark is "T", and a new color mode is CMYK in Adobe Photoshop software, the resolution is 2450dpi, the size is 4 * 4.8cm, and the background content is a transparent file, which is used in the file "Text Tool" inserts a "T" with a font size of 48 points and a font size of 48 points, and names it "anti-counterfeiting logo.tif";
[0065] Step (2), screening
[0066] Open the "source image.tif" in Adobe Photoshop software, separate the four channels of cyan C, magenta M, yellow Y, and black K, perform "image / mode / bit...
Embodiment 2
[0084] see Figure 8 , 9 And 10, compared with embodiment 1, the difference of embodiment 2 is:
[0085] (1) The content of the source image is different, and the input resolution of the source image is 1440dpi, the size is 4×3.75cm, and the screen line number is 180lpi; the anti-counterfeiting mark is a graphic;
[0086] (2) Since the number of screen lines is different, the corresponding displacement is also different;
[0087] (3) The identification gratings presented correspondingly are different.
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