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This paper presents an empirical study of the mutation techniques used by the tool PASTE. This tool allows the automation of our passive testing methodology for systems that present stochastic-time information. In our proposal, invariants express the fact that each time the implementation under test performs a given sequence of actions, then it must exhibit a behavior according to the probability...
In this paper, we present a scheme of steganalysis of JPEG images with the use of polynomial fitting and computational intelligence techniques. Based on the Generalized Gaussian Distribution (GGD) model in the quantized DCT coefficients, the errors between the logarithmic domain of the histogram of the DCT coefficients and the polynomial fitting are extracted as features to detect the adulterated...
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