An anti-copyscheme for laser label based on digitial watermarking

摘要

In this paper a novel watermarking scheme is proposed to anticopy for laser label. In consideration of the physical characteristics of laser label, particularly to deal with its instability and non-uniqueness of image formation, a new watermarking information encoding method is presented, which is called “watermarking with structure”. With regard to the cases of different capacities of watermark information, the digital shapes with single circular ring and multiple circular ring are designed respectively. The experimental results show that the proposed anti-scheme can effectively resist rotateon, scaling and other attacks, and has good robustness.