Reversible data hiding algorithm for high quality stego images

A reversible data hiding method is widely used in medical application and military application which do not allow distortion of image after data extraction. Conventional method modify pixel value adaptively based on statistics of neighbor pixels. Although the conventional method achieves high capacity, it makes significantly distorted stego image. Significant distortion of stego image is not acceptable in some data hiding application. To improve the quality of stego image, this paper proposes an algorithm that improve the quality of stego image while maintaining the embedding capacity to use more accurate weight for pixel modification. The simulation results indicate the efficiency of the proposed method.