Data Compression Adapted Based Binary Image Hiding Method

Due to the prevalence of the Internet and multimedia, one can transmit a huge amount of data via the Internet. Image hiding techniques is often used to prevent data transmitted on a computer network from being hacked by unauthorized users. Generally, in a binary image, only the proximity of edge can be used to carry secret data. Since a little space in a binary image can be used to carry secret data, it is much more difficult to conceal secret data in a binary image than in a gray-level or a color image. This paper provides a hiding method to embed secret data in a binary cover image. The method hides secret data in object boundaries. The experimental results show that the hiding method can give a good capacity rate and cover image quality. In addition, the proposed method can be combined with image compression methods. Keyword: Huffman encoding, arithmetic encoding, image compression, data hiding