Data hiding technique in video using a secrete key

The interest in data hiding has increased with the recent activity in digital copyright protection. One way to protect the image is to secretely embed data in the content of the image. The content owner hide the original message using hiding key in any cover medium. The receiver does these processes in reverse for getting back the original message the data hiding key is employed to extract the secret message and get back the original content. In this paper we will present the overview on the use of data hiding technique using the improved LSB on video. One of the major disadvantage with simple LSB method is that, while inserting the secrete data into the target image it can change the least significant bit of all the image pixel. In this way hidden message will be destroyed by changing the quality of image. In order to overcome that limitations we are proposing improved LSB with 1,4,3 bit position technique is currently being developed. We are using the block size 4×4 to hide data. This paper will review development in data hiding technique, specifically it is secure data hiding in the image.