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Image applications have been increasing in recent years. Encryption is used to provide the security needed for image applications. In this paper, the authors classify various image encryption schemes and analyze them with respect to various parameters like tunability, visual degradation, compression friendliness, format compliance, encryption ratio, speed, and cryptographic security. The use of image and video applications has increased dramatically in recent years. When communication bandwidth or storage is limited, data is often compressed. Especially when wireless network is used, low bit rate compression algorithms are needed because of limited bandwidth.
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