The principle of authenticity identification of anti-counterfeiting printed matter is similar to that of equipment detection. Both of them are based on the camera as the core component. After setting relevant parameters, the object to be detected and identified is detected.
Anti-counterfeiting printed matter
First, the authenticity of anti-counterfeiting printed matter identification principle
1. Comparison method
Obtain the anti-counterfeiting feature information for comparison from the anti-counterfeiting printed matter, use the camera to photograph or scan the anti-counterfeiting printed matter to obtain the image, identify the image, determine whether there is the anti-counterfeiting feature information corresponding to the anti-counterfeiting feature information in the image, if the printed matter with the corresponding anti-counterfeiting feature information is the genuine product, otherwise it is the fake product, advantages: Can be easily and accurately identified, counterfeiters can not effectively copy, low cost, suitable for many fields.
2, special light recognition method
In the manufacturing process of anti-counterfeiting printed matter, technical means can be used to make the required logo, pattern, watermark, etc., into the paper. These patterns are not easy to see under normal circumstances, only to the special light can be displayed or seen clearly, and then through the camera output screen for identification, is recognized as an effective anti-counterfeiting technology by anti-counterfeiting experts all over the world. This method is also used for most national banknotes, important international documents, drawings of facilities and various kinds of tickets.
Two, the authenticity of printed matter identification requirements for the camera
1. Auto focus
Most of the identification of the authenticity of anti-counterfeiting printed matter is the traditional fixed focus camera, the fixed focus camera can obtain clearer and sharper imaging in a fixed environment, but the focal length of the fixed focus camera is single, will be limited to a specific scene shooting, for different anti-counterfeiting printed matter font size is different, the background is different, at this time the emergence of zoom camera, You can save the trouble of constantly focusing. SONY FCB-ER8530 fast autofocus function, can obtain a clearer image in an instant, for the anti-counterfeits printing authenticity identification industry to a new level.
2. Wide dynamic
In the anti-counterfeiting printing authenticity identification industry, relying on the light of different colors and brightness to identify special signs and patterns, in this uneven light, the wide dynamic function of the camera can help to obtain a consistent image of clarity.
Anti-counterfeiting printed matter anti-counterfeiting mark
3. AWB automatic white balance
The white balance of the camera is mainly to enable the photography system to obtain accurate color reproduction under different lighting conditions. In the industry of anti-counterfeiting printed matter authenticity identification, it is necessary to protect the original color of various colors in order to really play the role of using light to distinguish authenticity.
4. Exposure compensation
Camera exposure compensation is similar to wide motion, is a necessary function of autofocus cameras, can help the camera in the case of low light to obtain a clearer picture.
FCB-ER8530 is a new generation of SONY’s automatic focusing 4K ultra HD camera, with an effective pixel of about 8.51 million pixels and an output resolution of up to 3840*2160 (QFHD). It adopts a 20x optical zoom lens, with super resolution zoom, wide dynamic, automatic white balance and exposure compensation functions. Can identify the authenticity of anti-counterfeiting printing industry output ultra high definition picture.