Image Compression Using Intra Prediction of H.264/AVC and Implement of Hiding Secret Image into an Encoded Bitstream

The current still image compression technique lacks the required level of standardization and still have something can be improve according to compression rate, computation, and so on. This paper employs the technique of H.264/MPEG-4 Advanced Video Coding to improve still image compression. The H.264/MPEG-4 standard promises much higher compression and quality compared to other existing standard, such as MPEG-4 and H.263. This paper utilizes the intra prediction approach of H.264/AVC and Huffman coding to improve the compression rate. Each 4x4 block is predicted by choosing the best mode out of the 9 different modes. The best prediction mode is selected by SAE (Sum of Absolute Error) method. Also this paper deals with an image hiding algorithm based on singular value decomposition algorithm. This paper propose a data hiding algorithm, applying on encoded bit-stream. Before embedding the secret image into cover image, the residue of the cover image is first calculated and encoded using Huffman coding. At the decoder side the secret image is extracted and the cover image is reconstructed with sufficient peak signal to noise ratio.