Generating Robust Digital Signature for Image/Video Authentication

Image/video authentication techniques protect the recipients against malicious forgery. In this paper, we describe an image authentication technique that verifies the originality of the received images. The authentication signature can distinguish content-changing manipulations (such as pixel replacing) from content-preserving manipulations (such as JPEG compression). We also propose a video authentication method that generates robust signatures for compressed video. The signatures can survive some of the transcoding process of MPEG.