[Insight-users] How to compute "PCA shape model"?

[Zachary Pincus]

This is a longstanding gap in the documentation.

In brief, you will need to generate signed distance maps of a set of  
training shapes, and pass them to the PCAShapeModelEstimator class.  
You may then choose to divide the returned "shape mode" images (note  
that output zero from the model estimator is the mean image) by the  
reported standard deviations, as described in the example.

Let me know if more detail is required.

Zach Pincus

Program in Biomedical Informatics and Department of Biochemistry
Stanford University School of Medicine


On May 27, 2006, at 12:06 AM, sun wrote:

> Hi all:
>      I am using the filter "Geodesic Active Contours Segmentation  
> with Shape Guidance" to
> segment my image now.But the quoted  code just reads in a "PCA  
> shape model" that has been pre-computed
> earlier. I want to know how to compute such a shape model in  ITK.
> Who can help me?
>                                       sun li
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> 你 不 想 试 试 今 夏 最 “酷” 的 邮 箱 吗 ？
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