Reflective code for gray block embedding

The advent of rapid growth of the Internet has ascertained the hidden communication with its focus on security that has gained increasing importance. Of the various methods for establishing hidden communication, one important method is Steganography where the very existence of the data is concealed. Here, the embedding of secret data is varied by employing block based segmentation and thus, Steganography is performed. Categorization of the cover image is done with the help of a reference point and thereby, based on the variation in the MSB bit plane, the secret data is hidden. The proposed method will increase the complexity and the embedding capacity of the image and thus proving to be more efficient by the usage of utmost two or three bits for embedding the secret information in a cover pixel.