The importance of data hiding in the field of Information Technology is a widely accepted. The challenge is to be able to pass information in a manner that the very existence of the message is unknown in order to repel attention of the potential attacker. Steganography is a technique that has been widely used to achieve this objective. However Steganography is often found to be lacking when it ...

This paper researched on change detection of outdated map road feature based on updated high-resolution satellite remote sensing (RS) image. The change of road feature was divided into two parts: one is disappear or partial change; the other is new added. To detect disappear or partial changed road, based on outdated map road feature, this paper put forward methods of multi-scale template match...

For any authentication code for k source states and v messages having minimum possible deception probabilities (namely, P d 0 = k=v and P d 1 = (k ? 1)=(v ? 1)), we show that there must be at least v encoding rules. (This can be thought of as an authentication-code analogue of Fisher's Inequality .) We derive several properties that an extremal code must satisfy, and we characterize the extrema...

Figure 5\ Detecting forgery attack, (a) The tampered image, (b) The actual region tampered, (c) The difference map with k=9, (d) the difference map with k=7 ...12 Figure 6\ Modified Images of lena, (a) The image lena, (b) The image with the LSB plane and the second LSB plane flipped (c) The image with the LSB plane flipped (d) the image with the second LSB plane flipped ..

----------------------------------------------------------------------ABSTRACT-------------------------------------------------------------Steganography is derived from the Greek word steganos which literally means “Covered” and graphy means “Writing”, i.e. covered writing. Steganography refers to the science of “invisible” communication. For hiding secret information in various file formats, t...

In this paper, a few novel data hiding techniques are proposed. These techniques are improvements over the classical LSB data hiding technique and the Fibonacci LSB data-hiding technique proposed by Battisti et al. [1]. The classical LSB technique is the simplest, but using this technique it is possible to embed only in first few bit-planes, since image quality becomes drastically distorted whe...