Secure Palmprint Image Coding Algorithm for JPEG-LS

Based on forward-feedback nonlinear dynamic filter(FFNDF),a secure JPEG-LS coder was proposed,and then the proposed algorithm was employed in palmprint image.According to the characteristics of JPEG-LS,FFNDF was employed to generate chaotic stream cipher and then encrypt the coded stream during in the regular mode and run mode.The security of proposed scheme was also analyzed and some other compression and encryption algorithms were also compared.The experimental results show that the proposed palmprint image encryption algorithm has the incomprehensible nature of the encryption with high efficiency and security,as well as low-complexity and no affect on image compression performance.