Data Hiding In Motion Vectors of Video

Abstract: With the development technology data hiding has become an important issue.To improve the quality of videos embedded by data, the paper deals with data hiding in motion vectors of compressed video. Data is embedded in different frames of video. The transmitted data gets repeatedly embedded in motion vectors of the frames selected for processing. A threshold value is set for the motion vectors to achieve robustness while maintaining low error level. Secrete data gets embedded in the least significant bit of the motion vectors. While data extraction processing of video takes place frame by frame ,here original video is not required while extracting. Based on the aforementioned criteria and due to exploitation of spatial and temporal redundancies this method provides enhanced compression making the coefficients perturbation difficult to predict along with large embedding capacity.

Keywords: Data hiding, Motion vectors, Frames, steganography, Group of pictures