In previous image watermarking methods, an encoded host image and a watermark image are usually directly added.Therefore, the two images have cross-talk in the decryption step.In order to eliminate this effect，a new method based on digital holography interferometry is proposed,in which all the image pixels of the two sets of holograms resulted from two hidden images are rearranged and integrated into one set of composite holograms with a random scattering matrix (RSM)．In decryption the use of this matrix can ensure the exact retrieval of each hologram，and then the perfect reconstruction of each image without cross-talk noise can be achieved．In the decryption process, the use of RSM can ensure the accurate recovery of each holographic image, so as to achieve a perfect reconstruction of no crosstalk noise in each image. The computer simulation is performed using phase-shift interference and double random phase encoding techniques to verify the feasibility of the method , its robustness to occlusion and additional noise.this method is suitable for 2D and 3D images, and the additional RSM can also provide a higher level of security as a key.

Rolling optimization is the core of predictive control. A powerful optimization algorithm——tabu search algorithm was discussed, and was applied to rolling optimization. The objective function of rolling optimization is taken as taboo subject, a value range of control is divided into several super rectangular spaces, two-major-criteria is used to judge whether each point is tabooed, and the corresponding special pardon rule and termination principle were proposed, which makes the rolling optimization transformed into unconstrained optimization problems. Finally, its effectiveness was confirmed through simulating triangular wave and random signals.