Active shape model: Difference between revisions

Revision as of 12:43, 10 April 2008

Revision as of 20:02, 17 July 2008

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'''Active Shapeshape Models'''models (ASMs)''' are statistical models of the [[shape]] of objects which iteratively deform to fit to an example of the object in a new image. The shapes are constrained by the PDM ([[Point Distribution Model]]) Statistical Shape Model to vary only in ways seen in a training set of labelled examples.

The shape of an object is represented by a set of points (controlled by the shape model). The ASM algorithm aims to match the model to a new image. It works by alternating the following steps:

* Look in the image around each point for a better position for that point