DIGITAL VIDEO WATERMARKING USING MODIFIED LSB AND DCT TECHNIQUE

From the previous millennium there has been a significant change from the analog to digital world. In today's ti me Audio cd's, Internet and DVD's are more widespread than before. Though the film and music content owners are relu ctant to release digital contend. This situation is because if this digital content is left unprotected, there are high chances of it being copied rapidly, on a large scale, with no limitations on the number of copies and it can be easily distributed via Internet. [3]As there is a rapid development in the current Information Technology, electronic publishing like the distribution of digitized images and videos, are becoming more and more popular. So there is a need of protecting as well as authenticating 3 dimensional data. Copyright protection is an important issue for electronic publishing. This paper presents the different video watermarking techniques. It provides a review on various available algorithms. In addition to it, focus on Combined Least Significant Bit (LSB) and Discrete Cosine Transform(DCT) Technique and also LSB with modifications Technique.