Image information hiding algorithm based on DWT with alterable parameters

In order to improve security of DWT-based information hiding algorithm, this paper introduces an information hiding algorithm based on DWT with alterable parameters, in which the parameters are used to be key to control the locations of embedding secret messages. Embedding signals disperse in domain guessed by attacker, and which makes attacker difficult to steganalyze. Analysis and experiment results show our algorithm with better properties of transparency, robustness and security.