Image hiding and extraction algorithm based on intensity quantization and block random scrambling

Information hiding technology is studied in this paper, and a new image hiding algorithm based on intensity quantization and block random scrambling is proposed in this paper. The information is embedded into the carrier image in space domain, and when reconstructing the secret information, noise detection is performed before inverse quantization. A simple system of image hiding and extraction using the proposed algorithm based on Matlab is realized, and its resistance to noising, cropping and scribbling is simulated Results verifies the validity of the proposed algorithm and it has the advantages of simple implementation, large hiding capacity and good anti-noising and cropping performance.