Research On Information Hiding Technology Based On Error Control

With the development of digital communication technology and perfect, people acquire and share demand more and more image information through the Internet and other media, the security problems are becoming more and more serious, such as the image of the malicious illegal copying and piracy. Therefore, it is necessary to improve the security of image transmission in various media. People not only hope that the image information can be quickly and accurately transmitted to the destination, while in the process of transmission is not easy to be stolen and tampered with by others. In order to meet the needs of reality, we can use the information hiding technology to solve this problem. In this paper, the related technology theory is introduced, and the typical algorithms are analyzed. The channel coding theory is discussed. In this paper, under the support of the above two theories, the information hiding algorithm is studied, the main contents are as follows:(1) an image information hiding algorithm based on transform domain is proposed in this paper. It compares the advantages and disadvantages of the three transform methods in the transform domain algorithm. Implementation of the algorithm is the DWT transform of the carrier image, based on the wavelet coefficient to embed the secret image; DWT transform of the reconstructed image to extract the watermark information is embedded in the wavelet coefficients according to different bit plane binary data.(2) this paper proposes an image information hiding algorithm based on error control:the error control technology is designed to improve the transmission performance of image information, select (7,4) Hamming code of the secret two value image error control. The implementation of this algorithm is to control the binary data of two value image.In this paper, the algorithm for any image binarization, using Hamming code (7,4)value of two images error control; DWT transform to the carrier image after the embedding obtained stego images; then the inverse wavelet transform to obtain a reconstructed image,the watermark is extracted from the image; a comparative analysis of differences the image quality under different conditions.In the analysis of the information hiding algorithm without error control, it does not carry out error correction control, only the DWT transform part, comparative analysis of different conditions of the quality of the image, so as to compare the performance of the detection algorithm. The experimental results show that the error control algorithm has better performance and higher robustness and transparency.