The invention relates to a
multimedia integrated
steganography analysis method based on window
hypothesis testing. The method comprises the steps of (S1) preparing an original text set and a
hidden text set, and dividing a
training set and a testing set, (S2) extracting characteristic of the
training set, and training to obtain a predictor, (S3) placing the testing set into the predictor to obtain output, fitting a probability
distribution model according to the output, and estimating the parameter of the model by using the output, (S41) sampling the testing set according to the sizes of different windows, (S42) obtaining the null
hypothesis and alternative
hypothesis of a hypothesis test according to the probability
distribution model and parameter selected in the (S3), (S43) according to the specific
false alarm rate and false negative rate of a user, determining the judgment condition of the hypothesis test with the combination of the sampling scale of the windows, and carrying out statistical
inference and window hypothesis testing, and (S5) carrying out comprehensive analysis decision on the result of the window hypothesis test. According to the method, whether the sample comprises
steganography information or not can be detected, the
false alarm rate and false negative rate of integrated
steganography analysis can be reduced, and the running speed of steganography analysis is improved.