A Comparison of Lossless Steganography Using I-AMBTC Technique for Various Block Sizes

Abstract

Steganography is the art of hiding a message in an image and also the fact that there is a message inside the image. Steganography is a type of information hiding technique which embeds a secret message in a image,vedio,audio etc called the cover file. The main purpose of steganography is to provide security to personal or public data. In this paper Interpolative Absolute Moment Block Truncation Coding(I-AMBTC) is used for compressing the cover image and to embed the secret data into the cover. I-AMBTC compression is more than the AMBTC technique as only half of the number of pixels in the binary converted image are transmitted. Here a comparison of the I-AMBTC technique is done for 2x2, 4x4, 8x8 block sizes. I-AMBTC is a lossless technique as the cover image and the secret image can be recovered completely.