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In view of that the two-dimensional chaotic sequence only holds a low limited-accuracy, as well as the linear complexity of linear feedback shift register generated-sequence is limited, also the generated-sequence is easily decoded. This paper proposes one kind of the two-dimensional mix chaos algorithm for image encryption based on uniting the ultra-chaos switch system and the linear feedback shift...
Identification and verification of a video clip via its hash find application in broadcast monitoring. For broadcast monitoring, a novel method for computing a robust hash from video clips, being secret key based, is proposed based on the 3-D Discrete Wavelet Transform (3D-DWT) and median quantization. The proposed hash function is shown to be remarkably robust against video modifications and lossy...
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