New Application of Digital Image Technology in Label Fields 2
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A new generation of image anti-counterfeiting technology
Anti-counterfeiting features and identification methods are the soul of anti-counterfeiting labels. A new generation of digital watermarking technology is digital watermarking technology that directly embeds some identification information (ie, digital watermarks) into digital carriers (including images, documents, software, etc.). ), or indirect representation (modification of the structure of a particular area), does not affect the original carrier's use value, nor is it easy to be detected and re-edited, but can be identified by software, etc., by watermarkers. Through these hidden information in the carrier, it is possible to achieve the purpose of confirming the content creator and purchaser, and transmitting secret information or judging whether the carrier has been tampered with. Digital watermarking is an effective way to protect information security, achieve anti-counterfeit traceability, protect copyright and brand, and is an important branch and research direction of information hiding technology research.
Digital watermarking technology is used for labels. First, specific digital information (watermarks) must be added to the pre-press data file and then printed. When the authenticity is discriminated, the digital image is obtained by means of scanning, photographing, etc. of the printed image, and then the computer adopts a special processing algorithm to extract and analyze the previously added digital information (watermark) and identify it. Pseudo, and whether it has been tampered with and reproduced, see Figure 1.
The digital watermarking label combines image technology and printing technology to check if the printed matter is original or genuine by extracting and interpreting invisible information that is infiltrated into the label; at the same time, based on anti-counterfeiting, the “smartphone + mobile” is adopted. The "Internet + cloud" mode can combine labels with Internet applications to achieve advanced intelligence. Consumers using mobile phone APP, WeChat photos can quickly identify the authenticity of goods, but also can get picture and text of the product information, use methods and precautions.