Algorithm of image information hiding based on new anti-Arnold transform and Blending in DCT domain

Traditional Arnold transform is used widely in information hiding technology, but because of its long transform periodicity, it costs large time and computation memory. This paper introduces an new anti-Arnold transform algorithm, which reduces iterative times of anti-transform. With the combination of image blending, discrete cosine transform and new anti-Arnold transform, an algorithm based on the three technologies is proposed. Experimental result shows that the algorithm has good imperceptibility and validity, it also has certain degree of robustness under some common noise and spiteful attack.