Research on GEMD Image Hiding Technique Based on Chinese Remainder Theorem

In order to improve the efficiency of Generalized Exploiting Modification Direction (GEMD) image hiding and protect the private information from being leaked, an improved GEMD image hiding scheme based on the Chinese residual theorem is proposed. The main idea is to decompose the binary confidential information by the Chinese remainder theorem, and then combine the GEMD hiding algorithm to embed the decomposed confidential information into the carrier image to form a camouflaged image. The results of the experiments show that the improved GEMD hiding algorithm has significantly improved the embedding amount and PSNR value, and greatly enhanced its security performance.