Speed up of the edge-based inverse halftoning algorithm using a finite state machine model approach. - Kuo-Liang Chung; Ping-Zen Chen; Ying-Lin Pan (Comput. Math. Appl., 2009)

A gradient-based adaptive error diffusion method with edge enhancement. - Kuo-Liang Chung; Soo-Chang Pei; Ying-Lin Pan; Wei-Ling Hsu; Yong-Huai Huang; Wei-Ning Yang; Chyou-Hwa Chen (Expert Syst. Appl., 2011)