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Line 1: {{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}} [~~http~~https://~~www~~doi.csorg/10.~~ualberta~~1006/cviu.~~ca/~nray1/CMPUT615/Snake/cootes_cviu95~~1995.~~pdf~~1004]</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. Line 10: The technique has been widely used to analyse images of faces, mechanical assemblies and medical images (in 2D and 3D). It is closely related to the [[active appearance model]]. It is also known as a ~~“Smart~~"Smart ~~Snakes”~~Snakes"<ref name=Cootes/> method, since it is an analog to an [[active contour model]] which would respect explicit shape constraints. ==See also== Line 21: ==External links== * [http://www.mathworks.com/matlabcentral/fileexchange/26706-active-shape-model-asm Matlab code] open-source ASM implementation. * [https://web.archive.org/web/20060706184806/http://www.isbe.man.ac.uk/~bim//Models/index.html Description] of AAMs from Manchester University. * [http://personalpages.manchester.ac.uk/staff/timothy.f.cootes/ Tim Cootes'] home page (one of the original co-inventors of ASMs). * [http://www.milbo.users.sonic.net/stasm Source code] for ASMs (the "stasm" library). * [~~http~~https://code.google.com/p/asmlib-opencv/ ASMlib-OpenCV], An open source C++/OpenCV implementation of ASM. {{DEFAULTSORT:Active Shape Model}}