Active shape model: Difference between revisions

Revision as of 04:20, 25 September 2021

Latest revision as of 10:28, 5 October 2023

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{{Short description|Statistical model of an object's shape}}'''Active shape models''' ('''ASMs''') are [[statistical model]]s of the [[shape]] of objects which iteratively deform to fit to an example of the object in a new image, developed by Tim Cootes and Chris Taylor in 1995.<ref name=Cootes>{{cite journal| author=T.F. Cootes and C.J. Taylor and D.H. Cooper and J. Graham| title=Active shape models - their training and application| journal=Computer Vision and Image Understanding| pages=38–59| year=1995| issue=61}} [httphttps://wwwdoi.csorg/10.ualberta1006/cviu.ca/~nray1/CMPUT615/Snake/cootes_cviu951995.pdf1004]{{Dead link|date=September 2019 |bot=InternetArchiveBot |fix-attempted=yes }}</ref> 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.