Journal of Information Security Research J. Said, R. Souissi, H. Hamam 4 1 2013 http://www.dline.info/jisr/fulltext/v4n1/5.pdf A new way to represent Image consists in numbering all possible pixel combinations. Instead of defining it by a matrix of pixels, the number of the pixel combinations that corresponds to the given image is a unique identifier of this image. To store the image in a memory, we need only to write this number in a file. This new method has several intrinsic advantages such as compression and encryption.