This paper proposed a zero-watermark scheme for 2D vector drawings based on mapping which few researches have been conducted on till now. In our scheme, The watermark is not embedded into but built or picked up from the original vector drawings by mapping the most two important characters the length ratio and angle to a dot picture which can also be saved in a vector format. Experimental results demonstrate that the proposed cheme is lossless and robust enough against the ordinary attacks such as rotate, scale, transplant (RST) as well as their combinations, even cropping and adding attacks with higher accuracy and computation efficiency and moreover it has a distinctively visual effect.Generally it shows better performances than the previous ones and is faithful enough for the authentication.
展开▼
