A multi-directional roller assembly for directing articles in a conveying system. The user is able to individually open and close bypass conduit pinch valve external to micro-abrasive blasting device to affect the perturbation intensity internal to the mixing chamber. The encoding is performed in a manner that allows the actual multiplication process to proceed quickly. The decode process decodes the encoded images and the encoded parameters and stores each image in a separate image buffer, and each set of associated parameters in a buffer descriptor structure associated with the image buffer.