Hierarchical algorithms for morphological image processing. - En-Hui Liang; Edward K. Wong (Pattern Recognit., 1993)

An efficient method for obtaining morphological skeletons. - En-Hui Liang; Edward K. Wong (Pattern Recognit. Lett., 1993)

A Hierarchical Approach to Distance Calculation Using the Spread Function. - En-Hui Liang; Shih-Gang Lin (Int. J. Geogr. Inf. Sci., 1998)

Effective semantic features for facial expressions recognition using SVM. - Chen-Chiung Hsieh; Mei-Hua Hsih; Meng-Kai Jiang; Yun-Maw Cheng; En-Hui Liang (Multim. Tools Appl., 2016)