2010 Summer Project Week Shape Test Bench

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  Projects List

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  Original Caudate Shape.

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  Artifical Bump Added to the Tail.

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  Synthetic perturbation

Key Investigators

• UNC: Marc Niethammer
• BWH: Sylvain Bouix

Objective

• A prototype software to create population of synthetic 3D objects for shape analysis testing and evaluation.

Approach, Plan

• Artifical shape changes in the form of: global volume preserving transforms, "dimples and bulges", boundary noise.
• Automatic population creation mimicking real data variability.

Progress

• First version of boundary noise creation done.
• Affine transforms for population creation.

Progress during programming week

• Created full pipeline to create synthetic shapes with deformable warps based on the following steps:
• Unbiased atlas building from a normal population.
• Creation of a mean shape.
• Introduction of randomized dimples and bumps both parametrically and non-parametrically.
• Creation of population with these changes from inverse deformation fields (from the atlas).
• Wrote a viewer to inspect population.
• Currently a mixture of C++/matlab and shell scripts. To be streamlined ...

Delivery Mechanism

To early to tell. Either a downloadable set of images, or an open source software suite.

References