Shapes are complex objects to apprehend, as mathematical entities, in
terms that also are suitable for computerized analysis and
interpretation. This volume provides the background that is required for
this purpose, including different approaches that can be used to model
shapes, and algorithms that are available to analyze them. It explores,
in particular, the interesting connections between shapes and the
objects that naturally act on them, diffeomorphisms. The book is, as far
as possible, self-contained, with an appendix that describes a series of
classical topics in mathematics (Hilbert spaces, differential equations,
Riemannian manifolds) and sections that represent the state of the art
in the analysis of shapes and their deformations. A direct application
of what is presented in the book is a branch of the computerized
analysis of medical images, called computational anatomy.