Capacity Increase and Generalization of ±1 Embedding Steganographic Method

In many steganographic systems LSB filliping is used to hide messages in spatial domain. This method, with ease of implementation as its advantage, is a weak approach against statistical attacks. Methods that can avoid statistical attacks offer a small payload capacity. It has been shown that ±1 embedding is much harder to detect than LSB filliping. The ±1 embedding method does not introduce the same asymmetries into the stego image histogram. In this paper we propose a method that increases the capacity of ±1 embedding while maintains the same security level.

کلیدواژه ها:

Steganography ، LSB matching ، Steganalisys ، high capacity