Image encryption : a communication perspective This book covers image encryption principles as well as different encryption techniques with different purposes are covered. The image encryption topic is treated from a communication perspective. It is expected to have readers from the undergraduate and post graduate communities. This book describes evaluates and compares with respect to security level and encryption speed algorithms that fall into the representative image encryption techniques naïve position permutation value transformation substitution transposition and selective techniques. It will assist application developers in selection of the encryption that best fulfills the application requirement