Research And Implementation Of Commercial Anti-counterfeiting Based On Special-shaped QR Code

With the rapid development of economy and the level of science and technology,the demand for commercial anti-counterfeiting is increasing.As the main carrier of information dissemination,two-dimensional codes play an increasingly important role in the field of anti-counterfeiting.In recent years,as more and more scholars have conducted in-depth research,the two-dimensional code anti-counterfeiting technology has been developing by leaps and bounds,but improving the anti-counterfeiting performance is still the biggest challenge.In order to improve the anti-counterfeiting capabilities of QR code,this paper studies two directions from the production of effective anti-counterfeiting QR code and the improvement of two-dimensional code scan rates,and implements three algorithms for generating and decoding alien QR code.The main work is summarized as follows:First,implement a multi-dimensional two-dimensional code generation and decoding algorithm based on proprietary codes.Such special-shaped QR code are different from the traditional two-dimensional code in the encoding method,and the encoding part is divided into a general segment and a specific segment.The general section can store the basic information of the product,can be read by the ordinary decoder.The proprietary segment can be decoded by the multi dimension QR code decoder which can only be generated in this paper,ensuring the uniqueness,non-replicability,and non-forgery,thus ensuring the authenticity of the product and improving the anti-counterfeiting performance.By comparing the algorithm with the traditional algorithm,it proves the effectiveness and feasibility of the algorithm.Second,a visual QR code generation algorithm based on Sobel operator is implemented This kind of heteromorphic QR code has a good aesthetic quality,which can effectively improve the user scan rate and thus improve the anti-counterfeiting performance.In this algorithm,the background image is firstly extracted and the contour color and thickness are changed.Then the QR code is weakened by the pixel,and finally the visual two-dimensional code based on the background contour is obtained.A series of experimental results and performance analysis show that the two-dimensional code generated by this scheme has a fast decoding response speed,good visual performance,and can be applied to the field of anti-counterfeiting in mass production.Third,a pattern-based color dynamic two-dimensional code generation algorithm is implemented.The special-shaped two-dimensional code generated by the algorithm has a very good visual effect,and thus improves the scanning rate and improves the anti-counterfeiting level at the same time.In this algorithm,the traditional QR code is generated first.Then,the pattern is drawn on this basis to generate new images,which can be divided into three parts:interior design,location detection and other regions.Then the color coding is carried out in three different regions,and the color two-dimensional code based on the pattern is generated.In the end,multi-color 2d codes are used to generate dynamic codes based on patterns.The experimental results show that the algorithm is effective and feasible.