Dual digital watermark embedded in the two-dimensional code image security algorithm

摘要

The commonly used security labels is vulnerability of small capacity, easily damaged,anti-fake is not obvious effect. So,people need a new method to create an efficient anti-fake tag. This research Proposed a new method of two-dimensional code and digital watermark technology combining to generate a new security label. Two-dimensional code inherently resistant to damage, and large information capacity, information hiding. DCT-based method to the picture of two-dimensional code to embed a security icon and then to embed a string in two-dimensional code the image produced on the surface invisible element. At last we get the security icon of two-dimensional code with dual digital watermark. Through experiments and practical applications, the advantages of this method were analyzed and summarized‥