Applying manifold learning to plotting approximate contour trees
Shigeo Takahashi, Issei Fujishiro, Masato Okada
IEEE Transactions on Visualization and Computer Graphics (Special
Issue of IEEE VisWeek 2009 ), Vol. 15, No. 6, pp. 1185–1192, November/December 2009, Received 2009 International Best CG Paper Award from the Society of Art and Science.
Publication page in 2009 is here