A New Method to Steganography Whit Processing Picture in Three Colors (RGB)

Steganography hides the very existence of a message so that if successful it generally attracts no suspicion at all. There are many techniques to perform steganography on electronic media, most notably audio and image files. In this paper, we present a new steganographic technique for embedding messages in BMP image. The main goal of this method, like any steganography techniques must do, is to hide a text of a secret message in the pixels of the image in such a manner that the human visual system is not able to distinguish between the original and the stegoimage, but it can be easily performed by a specialized reader machine. In this paper we are presenting the technique which works by changing a few pixel color value at specific points in the image. In a natural image, neighbor pixels have a high cross correlation. This point is alsotrue about LSB planes of close pixels. The points selected with mathematical operations based on image and considering the criteria of color intensity . Since the RGB image is composed of three colors, the image can be processed in three dimensions. So the pixels are more dispersed and security Image goes higher. It is also trying not to degrade image quality and information stored will not lose their security and as far as possible does not change the image size