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Evolutionary Morphing David F. Wiley Nina Amenta Dan A. Alcantara Deboshmita Ghosh Yong J. Kil
 

Summary: Evolutionary Morphing
David F. Wiley Nina Amenta Dan A. Alcantara Deboshmita Ghosh Yong J. Kil
Eric Delson Will Harcourt-Smith F. James Rohlf§ Katherine St. John Bernd Hamann
Institute for Data Analysis and Visualization and Department of Computer Science,
University of California, Davis
American Museum of Natural History and Lehman College of the City University of New York
§Department of Ecology and Evolution, State University of New York, Stony Brook
ABSTRACT
We introduce a technique to visualize the gradual evolutionary
change of the shapes of living things as a morph between known
three-dimensional shapes. Given geometric computer models of
anatomical shapes for some collection of specimens - here the
skulls of the some of the extant members of a family of monkeys
- an evolutionary tree for the group implies a hypothesis about the
way in which the shape changed through time. We use a statisti-
cal model which expresses the value of some continuous variable at
an internal point in the tree as a weighted average of the values at
the leaves. The framework of geometric morphometrics can then be
used to define a shape-space, based on the correspondences of land-
mark points on the surfaces, within which these weighted averages

  

Source: Amenta, Nina - Department of Computer Science, University of California, Davis

 

Collections: Biology and Medicine; Computer Technologies and Information Sciences