a method and system implements selective , memory efficient , control over the amount of error diffused in a hybrid screening system . an image context error computer receives a pixel classification and an error value . upon receiving these data , a set of shift registers supplies a fractional portion of the error value to an error diffusion circuit . a bypass thresholder receives screened video and applies simple thresholding . in parallel with the simple thresholding , an error diffuser receives screened video and applies error diffusion . the results of the two processes are output to a multiplexer which outputs one based on the pixel classification .