WATERMARKING MOVIES TO EASILY RECOGNIZE WHO IS THE OWNER

摘要

A new watermark (4901, 4902, 4903) for motion pictures utilizes the fact that defects of isolated still images that are clearly identifiable as such can be tuned so that the effect on the motion picture is invisible (we say that they are frame-by-frame visible or F-visible). This fixes the deadlock problem on watermark proof of ownership. F-visible watermarks can be added to the uncompressed or to the compressed movie. The frames will be cut into one or more zones and the succession of watermarking zones will be determined so that some minimal number of frames separates two consecutive utilizations of the same zone. To mark in the zones one can use a library of shapes or a generator of shapes that will produce watermarks that are human readable and recognizable as defects or recognizable images on still frames, and non-machine readable to the best of technologies to this effect.