Threshold Pattern Filters for Image Enhancement. - Pak-Cheung Lai; Bing Zeng (ICIP (2), 1999)

Fast Sub-Optimal Design of Extended Threshold Boolean Filters. - Pak-Cheung Lai; Bing Zeng (ICIP (2), 1999)

Image enhancement filters based on threshold patterns. - Pak-Cheung Lai; Bing Zeng (NSIP, 1999)