A novel method for tamper detection and recovery resistant to Vector Quantization attack

摘要

In this paper we present a novel fragile watermarking technique which is obviously sensitive to forgery and vector quantization attacks. The proposed scheme acts in the spatial domain and has the ability to localize the modifications undergone to the authenticated image, and recover tampered regions. To increase the security of our method, a chaotic map is used in different stages in the watermarking process. Indeed, it is used to mix the logo pixels and choose the LSB which carry out the information. The authentication and recovery information are inserted in the three LSBs of the gray level pixels. Simulation results show that the proposed method is fast, secure and capable of detecting and recovering the tamper with a good quality.