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《Journal of Liaoning Shihua University》 2018-03
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Cross-Talk Free Image Encryption and Watermarking by Digital Holography and Random Composition

Qi Jun;Liu Changhong;Zhang Wei;School of Information and Control Engineering,Liaoning Shihua University;School of Computer and Communication Engineering,Liaoning Shihua University;  
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.
【Fund】: 抚顺市科学技术发展资金计划项目(FSKJHT201548);; 辽宁省大学生创新创业项目(201710148000061)
【CateGory Index】: TP309.7;TP391.41
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