Method for prefabricating anti-counterfeiting information in host image
A technology of host images and pixel points, applied in the field of prefabricated anti-counterfeiting information, can solve problems such as the synergistic effect of the actual distance between the dots, the limited modulated angle and distance of the dots, and the lack of lap joints, etc., so as to improve concealment and optimize The effect of distance, widening angle range
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Embodiment 1
[0092] A method for prefabricating anti-counterfeiting information in a host image, comprising the steps of:
[0093] Step 1. Select and decompose the host image
[0094] The host image is randomly selected to hide the anti-counterfeiting information. The host image needs to meet the following conditions:
[0095] (1), a digital file composed of m*n pixels;
[0096] (2), present embodiment 1 is in photoshop software, image mode is set to CMYK mode, decomposes host image, makes it to be made up of totally 4 color channels of C channel, M channel, Y channel and K channel;
[0097] Step 2. Determine the hidden area of the host image and anti-counterfeiting information
[0098]At least one color channel of the host image has a hidden area where anti-counterfeiting information can be set. The hidden area has s*s pixels. The color channel where the hidden area is located is the master, and all the pixels in the hidden area are in the master The color values on the plates are ...
Embodiment 2
[0124] see Figure 4 , 5 and 6, on the basis of embodiment 1, the differences of embodiment 2 are: (1), the host image is different; (2), the anti-counterfeiting information is text; (3), α is 0.1.
Embodiment 3
[0126] see Figure 7 , 8 And 9, on the basis of embodiment 1, the difference of embodiment 3 is: (1), the host image is different; (2), the anti-counterfeiting information is a figure; (3), α is 0.25, preferably after the network point e moves The polar coordinates of q' are
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