Two-dimensional chaotic map mage encryption algorithm based on wavelet domain

A bits expanding algorithm is used on wavelet domain to enerypt image in this paper,and it also uses chaos parameter sensitivity and pseudo-random to adjust the coefficient and scrambl the Pixel transformed bits expanding which can achieve high-strength encryption.The simulation result shows that the algorithm is very well.It has high quality of secre-cy as well as short computation time,and well coherence between the restored image and the original image.