A new comprehensive security protection for remote sensing image based on the integration of encryption and watermarking

For the special characters, remote sensing image has higher requirements in content security: it desires not only the encryption during storage and transmission for preventing information leakage, but also the watermarking after illegal usage for copyright protection or even source tracing. Therefore, this paper proposed to integrate encryption and watermarking based on the orthogonal decomposition for the comprehensive security protection of remote sensing image. By the proposed method, encryption and watermarking can achieve the operation independence and the content mergence; moreover, there is not special requirement in selecting special encryption and watermarking algorithms. It makes up the shortage of recent integration method based on spatial scrambling in application and possesses higher security. According to the experimental results, the proposed method satisfies the common constraints of encryption and watermarking, furthermore, has little impact on remote sensing image data characters and later applications.