An Adaptive Image-Hiding Algorithm Based on Optimal LSBs Substitution

In order to improve the quality of the embedding result and the hiding capacity of the image, this chapter presents a method of information hiding algorithm based on optimal LSBs substitution and image visual perception. By the hard c-means clustering analysis and according to the characteristics of human vision sensitivity, an optimal pixel adjustment process is applied to the scrambling technology to improve the quality of embedding result. In addition, the spatiotemporal chaos mapping can be used to solve the problem that the hiding algorithm cannot provide a way of protecting the secret information. The initial parameters of the spatiotemporal chaos mapping can act as the private keys, which can provide larger key space. Experimental results showed the proposed algorithm can make a great improvement in both the imperceptibility and the quality of the cover-image.