Simple connectivity is not locally computable for connected 3D images. - Chung-Nim Lee; Azriel Rosenfeld (Comput. Vis. Graph. Image Process., 1990)

Representation of orthogonal regions by vertices. - Chung-Nim Lee; Timothy Poston; Azriel Rosenfeld (CVGIP Graph. Model. Image Process., 1991)

Winding and Euler numbers for 2D and 3D digital images. - Chung-Nim Lee; Timothy Poston; Azriel Rosenfeld (CVGIP Graph. Model. Image Process., 1991)

Counting minimal paths in 3D digital geometry. - Seung-Cheol Goh; Chung-Nim Lee (Pattern Recognit. Lett., 1992)

Holes and Genus of 2D and 3D Digital Images. - Chung-Nim Lee; Timothy Poston; Azriel Rosenfeld (CVGIP Graph. Model. Image Process., 1993)

Counting minimal 18-paths in 3D digital space. - Seung-Cheol Goh; Chung-Nim Lee (Pattern Recognit. Lett., 1993)

Morphological scale-space using generalized zero-crossings as feature points. - Kyeong-Ryeol Park; Chung-Nim Lee (ICPR (3), 1994)

Stereo vision based on algebraic curves. - Min-Ho Ahn; Chung-Nim Lee (ICPR, 1996)

Scale-Space Using Mathematical Morphology. - Kyeong-Ryeol Park; Chung-Nim Lee (IEEE Trans. Pattern Anal. Mach. Intell., 1996)

Voronoi diagrams on the spher. - Hyeon-Suk Na; Chung-Nim Lee; Otfried Cheong (Comput. Geom., 2002)

Geometry of root-related parameters of PH curves. - Min-Ho Ahn; Gwang-Il Kim; Chung-Nim Lee (Appl. Math. Lett., 2003)