An Integrated Message Hiding and Message Extraction Technique for Multimedia Content Using Invisible Watermarking Technique

Abstract

The protection of multimedia data is becoming very important. The protection can be done with encryption. Involving both encryption and compression side-by-side needs more complex algorithms for content retrieval. Reconstructing the compressed encrypted content without much information loss is important. This work improves the ratio-distortion performance and also embedded message in the source image can be extracted for the source image authentication by using invisible watermarking technique. The message can be embedded into and extracted from the source image using watermarking techniques. The watermarked image is compressed by using quantization method to improve the compression ratio. The compressed image is encrypted and decrypted using modulo-256 addition by adding pseudo-random numbers into the image pixels. The encrypted image is splitted into number of files and in the user side using the auxiliary information (AI), file is merged using file adaptive wrapper method to decrypt the source image. Finally, with the use of verification key the embedded message is extracted and the source image is verified. It is shown that this method improves the ratio-distortion performance in compressing a watermarked image and better quality of reconstructed image. In order to further improve the distortion performance and quality of the reconstructed image other compression methods can be used.
DOI: 10.17762/ijritcc2321-8169.150542