Steganography, derived from Greek, literally means “covered writing”. It includes a vast array of secret communications methods that conceal the message’s very existence. These methods include invisible inks, microdots, character arrangement, digital signatures, covert channels, and spread spectrum communications. This paper proposes a new improved version of Least Significant Bit (LSB) method....

We present a steganalysis scheme for LSB matching steganography based on feature vectors extracted from integer wavelet transform (IWT). In integer wavelet decomposition of an image, the coefficients will be integer, so we can calculate co-occurrence matrix of them without rounding the coefficients. Before calculation of co-occurrence matrices, we clip some of the most significant bitplanes of ...

Information security is an important factor when critical information transferred. This paper concentrates on finding a method that can hide message in image without making any changes to it. The proposed novel and based the Least Significant Bit (LSB) with high imperceptibility capacity. Initially, secret bits are compressed using LZW technique, then embedded into LSB of edge pixels cover whic...

In this paper we describe our experience in creating a tool capable to provide traceability of the requirements between different versions of the LSB and POSIX standards. We propose an approach for merging requirement markup without exact matching of the documents by means of arithmetic hashing and context similarity analysis.

This paper researched on change detection of outdated map road feature based on updated high-resolution satellite remote sensing (RS) image.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 To detect disappear or partial changed road, based on outdated map road feature, this paper put forward methods of multi-scale template match...

A new method is introduced for the least significant bit (LSB) image steganography in spatial domain providing the capacity of one bit per pixel. Compared to the recently proposed image steganography techniques, the new method called onethird LSB embedding reduces the probability of change per pixel to one-third without sacrificing the embedding capacity. This improvement results in a better im...