Recursive Representation and Progressive Display of Binary Objects for Efficient Network Browsing. - I-Pin Chen; Zen Chen (J. Vis. Commun. Image Represent., 1998)

Recursive Conversion of Chain Code into Quadtree with Table Lookup. - Zen Chen; I-Pin Chen (ICPR, 2000)

A simple recursive method for converting a chain code into a quadtree with a lookup table. - Zen Chen; I-Pin Chen (Image Vis. Comput., 2001)