REAL-TIME VIDEO WATERMARKING SCHEME USING OF FRAME AVERAGE

摘要

The present invention relates to a watermarking (watermarking) techniques to protect the copyright of digital data, the method comprising, separated by each sub-group of the divided original frame n pieces, to each pixel position of the frame addition and subtraction different values and the steps of using a JND (Just Noticeable Difference) scheme by changing the insertion strength (Δ), or the average of two consecutive frames of the watermark information is adaptively inserts the watermark information adaptively for each pixel, calculating the mean (m _ei, m _oi) of the sub-groups and, using the average value calculated by a step of extracting the watermark information. It can, according to the watermarking method according to the invention, the cutting and rotating, as well as resistant to change in size, projection attack and strong in attack, such as compression, filtering, extracting the road insert was added to geometric attacks, compresses the watermark to ensure a more stable, because the claim. In addition, the present invention has the effect of being able to insert a video broadcast bar watermark information to ensure perfect real-time requirements of the Saints video watermarking algorithms in real time.