image symmetry
3.The scheme based on the statistical model and symmetry analysis is presented to detect and locate the specific object in an image with complex background. The combination of statistical model and symmetry increases the robustness of the performance while the target is deformed and tilted. The scheme is suitable for human face location in intelligent humanmachine interfaces(HMI) and provides a groundwork to practical application of face recognition techniques(FRT).
4.With the security problem of image information as research background,this paper introduces the Advanced Encryption Standard(AES): Rijndael algorithm. Base on the symmetry block cipher algorithm,a method for scrambling and restoring digital images is proposed,which uses the AES algorithm under the control of secret key.

