On the basis of digital image’s information sharing

a new blending approach based on RB curve is presented. The approachmakes use of an degree rational Bézier curve or akdegree2[n/n]RB curve or a[n/n]RB curve with weights to hide information of one image intonimages. These blending schemes have more blending parameters to act as the private keys

which can enhance the security and robustness of the hiding image. Furthermore

the schemes can be combined with the scrambling technology

which is usually used as pre2process and post process of digital image information hiding. Experimental results show that these schemes can be realized expediently and have some degree of robustness. These blending schemes can also be used in the field of digital watermarking and other digital application.