The Information Hiding Technology Based on the Similar Sample Blocks of Grayscale Image

This paper proposes an information hiding method based on similar sample block. The proposed scheme divides a standard contrast image into several blocks, called sample blocks, and takes the sample block as the contrast benchmark for embedding the secret information. This method provides a simple embedding process but a better result. The standard image can be placed on the web or specific places for downloading and it will not require any extra delivery. Because the standard image is only the reference information whilst embedding, any grayscale image can be taken as the standard image. According to the experimental result, the proposed scheme can embed a great deal of information and effectively reduce the distortion.