Digital Image Information Hiding Technology Based on Lifting Wavelet Transform and Image Fusion

A color multi-focus image fusion of self-feedback algorithm based on lifting wavelet transforms. Firstly, the basic principle of lifting wavelet transform is discussed. Secondly, considered feature of human vision system, the color images are transformed into YIQ color space and different fusion rules are used. The fusion parameters are substituted by extended chaotic sequences, this rule is used in fusing me and Q components, and an optimized fusion result of Y component is obtained by self-feedback fusion rule, then the three fusion results are transformed into RGB space. Based on the image fusion, we present a digital image hiding technology for images which have different size. In the process of image fusion, the fusion parameters are substituted by extended chaotic sequences, this approach makes the algorithms safer, and the experimental results indicate the algorithm has good efficiency and safety.