A Survey on Optical Information Hiding
光学信息隐藏综述

Information hiding by using the optical processing system is becoming a new inter-discipline and receives increasing attention recently,because of the inherent advantages of the system,such as high speed and parallel processing.In the present paper,the major methods of optical information hiding,based on the technique like random phase encoding and digital holography,are described and analyzed.Multiple and 3D information hiding are also introduced.Finally,the difficulties and possible advances for further research are also pointed out in brief.