Edge enhanced error diffusion algorithm and method of image encoding.

摘要

A method of dynamically adjusting the threshold level (Tn) of an error diffusion algorithm to selectively control the amount of edge enhancement introduced into the encoded output (Bn). The threshold level is selectively modified (40, 42) on a pixel by pixel basis and may be used to increase or decrease the edge enhancement of the output digital image, thus, more closely representing the original detail and edge sharpness of the continuous tone input image (In).