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This paper proposes a novel improved LSB ±k steganography based on shuffled frog leaping algorithm(SFLA) In the proposed method, the SFLA is applied to find an optimal substitution matrix for transforming the secret message. Different from the exiting optimization strategies which use the peak signal to noise rate (PSNR) as the fitness to assess the stego image quality, the new algorithm tries to...
A new wavelet packet image compression method is proposed based on PSO algorithm. The PSO is utilized to find out the best wavelet packet basis for image compression. A fitness function is designed in terms of the Mean Square Error (MSE) and the sum of the node entropy. Compared with the global soft threshold compression algorithm provided by Matlab soft, the proposed method exhibits better compression...
In this paper, we propose a novel adaptive fuzzy weight parameter PSO Algorithm (FPSO). In the improved algorithm, the inertia weight reserves its decreasing property after fuzzy treatment, and the position is controlled by fuzzy parameter. Simulations have been done to illustrate that the improved algorithm can regulate global search and local search, and has better search accuracy than the basic...
In this paper, a new image steganalysis method was proposed based on image gradient energy and entropy features, together with Fraid's proposed wavelet subband coefficients and higher-order statistics of linear prediction error features. We get 74-dimensional features extraction from images. The support vector machines (SVM) is used to class the images. Experimental results show the method can improve...
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