ABSTRACT

In image processing there is some copyright protection and techniques are available. Digital Watermarking is the technique for copyright protection of data (image).Cellular automata is successfully applied in image processing. Cellular automaton growth is controlled by predefined rule or programs .The rule describes how the cell will interact with its neighborhood. Once the automaton is started it will work on its own according to the rule specified. This paper will describe the image watermarking and cellular automata (CA).There are other techniques available for image watermarking, here watermarking based on cellular automata is describe with the types of cellular automata which be employed for image authentication through this key. the regular, modular, and cascadable structure of CA with local interconnections makes the scheme ideally suitable for VLSI implementation.