The security is a significant topic in transmission and management of pictures, while encryption is an effective method for protecting the secret images. In recent years, the chaotic/hyperchaotic system has been thoroughly developed in image encryption area due to its high randomness. In this chapter, the optical cryptosystems based on chaotic/hyperchaotic system are expressed in detail. We starts with the brief introduction of various chaotic/hyperchaotic systems, then several optical cryptosystems based on the chaotic/hyperchaotic map are expressed in detail. Some experiments are made to verify the security and robustness of these schemes.
Optical image encryption Cryptography Hyperchaotic system
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