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Shape Context Based Corresponding Point Models

version 1.1.0.0 (18.5 MB) by Dirk-Jan Kroon
Shape Context based nonrigid registration of 2D/3D objects, to build Active Shape Models

10.3K Downloads

Updated 26 Jan 2012

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Shape Context is a method to get an unique descriptor (feature vector) for every point of an object contour or surface. This descriptor is used in combination with a b-spline free form deformation grid, for fully automatic creation of point mappings between surfaces of patient datasets (2D/3D).

The 2D Example will create a corresponding point model (PCM) for a set of 10 2D hand contours.

The 3D Example will create a PCM for a set of 10 3D jaw triangulated surfaces.

There are also examples using the PCM's to train and use 2D/3D Active Shape Models (ASM) and Active Appearance Models (AAM). (folder "ActiveModels_version7")

The 2D example takes a couple of minutes. The 3D-example about 7 hours, and requires 64bit Matlab.

The non-rigid mapping between datasets is kept Diffeomorphic to prevent mesh folding. But the optimizer doesn't succeeded in all cases of the 3D-example (maybe in next update)

Notes:
- The examples, will compile some c-coded functions into MEX files. In case of failure slower Matlab coded functions will be used.
- Most functions in this zip-archive are also available as standalone files on the File-Exchange, and can be newer/updated.

Cite As

Dirk-Jan Kroon (2021). Shape Context Based Corresponding Point Models (https://www.mathworks.com/matlabcentral/fileexchange/30845-shape-context-based-corresponding-point-models), MATLAB Central File Exchange. Retrieved .

MATLAB Release Compatibility
Created with R2010b
Compatible with any release
Platform Compatibility
Windows macOS Linux

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ActiveModels_version7/

ActiveModels_version7/AAM Functions/

ActiveModels_version7/ASM Functions/

ActiveModels_version7/Functions/

ActiveModels_version7/InterpFast_version1/

ActiveModels_version7/PatchNormals_version1/

ActiveModels_version7/PieceWiseLinearWarp_version2/

ActiveModels_version7/PieceWiseLinearWarp_version2/functions/

ActiveModels_version7/polygon2voxel_version1j/

BuildingModels/

BuildingModels/DistanceFieldCP_version1/

BuildingModels/DistanceFieldCP_version1/functions/

BuildingModels/DistanceFieldCP_version1/polygon2voxel_version1j/

BuildingModels/ShapeContext_version2/

BuildingModels/ShapeContext_version2/functions/

BuildingModels/functions/

BuildingModels/isocontour_version2/

BuildingModels/nonrigid_version25/

BuildingModels/nonrigid_version25/functions/

BuildingModels/nonrigid_version25/functions_affine/

BuildingModels/nonrigid_version25/functions_nonrigid/

BuildingModels/nonrigid_version25/low_level_examples/

BuildingModels/polygon2voxel_version1j/