A complex number algorithm of image-hiding

Under the premise of comprehensive studying with different methods of image-hiding, we propose a method of new image-hiding, complex number algorithm, which is lower distortion and higher security, by researching the differences between the blocks of cover-image and secret-image. This algorithm is simple and practicable. It has greatly improved the security of system, robustness and facticity of image-hiding. experiment result verified the advantage of the algorithm.