Segmentation of Color Maps Using Eigenvector Line-Fitting Techniques. - Alireza Khotanzad; Edd Zink (CIC, 1996)

Contour Line and Geographic Feature Extraction from USGS Color Topographical Paper Maps. - Alireza Khotanzad; Edmund Zink (IEEE Trans. Pattern Anal. Mach. Intell., 2003)