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Randomness tests have been employed in encrypted data identification since encrypted data have high randomness. However, the evaluation of various randomness tests is absent. The NIST statistical test suite is performed on encrypted and compressed data, which are derived from seven different types of files. And an index, differentiability, is introduced to indicate the ability of a test to identify...
Look-up Table (LUT) is one of the popular methods for color reproduction because of its high precision. With the aim to improve the performance of color reproduction, the self-adaptive local nonlinear regression method is proposed in the paper. On the base of self-adaptive local linear regression, the new method has introduced Maximum Entropy Estimation and nonlinear regression to establish a high-precision...
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