研究目的
To propose a novel image encryption system based on virtual optical technique, Fourier transform phase retrieval algorithm and RSA public key exchange for secure data communication and information technology applications.
研究成果
The proposed image encryption strategy for information authentication using FTM based phase retrieval algorithm and RSA public key technique is simple, fast, accurate, and highly secured. It confirms the basic requirement of information exchange and is robust against potential attacks.
研究不足
The proposed technique relies on computer simulations for optical operations, avoiding the need for experimental setups, which may limit its applicability in scenarios requiring physical optical components.
1：Experimental Design and Method Selection:
The proposed strategy uses virtual optical techniques, including fringe projection profilometry (FPP), Fourier transform method (FTM) based phase analysis, and RSA algorithm for encryption and decryption.
2：Sample Selection and Data Sources:
A gray-level image is captured using a digital camera and encrypted.
3：List of Experimental Equipment and Materials:
Digital camera for image capture, computer simulations for optical operations.
4：Experimental Procedures and Operational Workflow:
The image is encrypted using a linear grating superposed on the reflected intensity map of the object, with a speckle mask used as a secret key. Decryption involves Fourier transform based phase retrieval and sequential line scan phase unwrapping algorithm.
5：Data Analysis Methods:
Root mean square error is calculated between the original image and retrieved image to determine accuracy.
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