High Capacity Information Hiding Algorithm in a Binary Host Image
Based on the characteristics of binary image whose value is 0 or 1 and in which just less information can be hidden,A large capacity hiding information scheme is proposed.In this scheme we divides the binary image into blocks of size 2×2,and then determine adaptively the bit number which can be embedded in it in order to reduce the negative impact to it according to the difference of black pixel number and white pixel number.Extracting hidden information is absolutely blind Extracting without the original host image and other information.Experiment demonstrates that this scheme sufficiently increases hidden information capacity more than percent 100 compared with the general hiding information algorithm.