Hiding secret image in video

The Internet is always vulnerable to interception by unauthorized people over the world. The importance of reducing a chance of the information being detected during the transmission is being an issue now days. Some solution to overcome these issues is cryptography, but once it is decrypted the information secrecy will not exits any more. Hiding data for confidentiality, this approach of information hiding can be extended to copyright protection for digital media. The importance as well as the technique used in implementing data hiding is trying to discuss in details here. The traditional LSB modification technique by randomly dispersing the bits of the message in the image and thus making it harder for unauthorized people to extract the original message, is vulnerable to lose of valuable hidden secrete information. Here, we propose a data hiding and extraction procedure for AVI (Audio Video Interleave) videos embedding the secret message bits in DCT higher order coefficients. The secret information taken here is an grayscale image pixel values. The grayscale pixel values are converted to binary values and embedded those values in higher order coefficient value of DCT of AVI video frames. Data Hiding and Extraction procedure a re experimented successfully. Various experiment results are show here. All experiments are done using Matlab 2010a simulation software.