Feature Extraction of Separation and Attachment Lines.

David N. Kenwright Chris Henze Creon Levit Feature Extraction of Separation and Attachment Lines. 135-144 1999 5 IEEE Trans. Vis. Comput. Graph. 2 http://www.computer.org/tvcg/tg1999/v0135abs.htm db/journals/tvcg/tvcg5.html#KenwrightHL99