A method for processing a digital color image for display and transmission includes the steps of (a) resizing the image to a lower display resolution to produce a display-sized image, (b) quantizing the display-sized image to a display palette with an error diffusion process to produce an error diffused...http://www.google.de/patents/US7130474?utm_source=gb-gplus-sharePatent US7130474 - Method and system for generating digital image files for a limited display
