Privacy-secure image sharing system for a purchaser and recorded subjects using semi-blind fingerprinting

A privacy-secure image sharing scheme of ubiquitous cameras on the Sensing Web is presented in this paper. It is aiming at distributing images taken by surveillance cameras to ordinary people, where ubiquitous sensors are opened to public use. However, privacy of recorded subjects should be protected by means of allowing a user to get images without revealing who and where the subjects were. Meanwhile, the one who owns surveillance cameras and offers an image should be able to identify the illegal user who pirates the image. The proposed system provides a solution against violation of user's privacy and content piracy toward establishing a feasible and practical image trading system.