Fractal L-shaped Domino Encryption and Decryption of Image

The Fractal Domino is made to Encrypt and to Decrypt colorful image

This is a fractal chess board covering algorithm for any size chessboard that included a special random initial grid. Due to the L domino always cover the intersection of sub-board without the special grid, the module functions were designed based on direct and indirect recursions combined with dividing-conquering strategy in mind, for the encryption and the decryption applications of the colorful pictures.