Active spline model (win)

A new model-based segmentation. It is close to active shape model, but uses Catmull-Rom spline.

Active spline model is a new approach for model-based segmentation. It uses centripetal Catmull-Rom spline to draw boundary, and after segmentation, the boundary can be easily edited.
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In the attached files, we have used active spline model to automatically segment posterior-anterior lung x-ray. Besides, we have provided all the necessary codes to train a model, and used ocular thermography as an example to do that.
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For detail on the method, read -
J. H. Tan and U. R. Acharya, Active spline model: A shape based model-interactive segmentation, Digital Signal Processing, (34) 2014, pp. 64-74.
In regard to the zip file -
1. Run ‘jdemospline.m’ to compare among types of splines.
2. go to ‘sample > lung > gui’, run ‘lgui.m’ to have a quick experience of the segmentation.

3. The points on the curve can be moved; click to move (not drag) and see the changes in the curve.

4.The uploaded zip file contains fewer and smaller images for ‘lgui.m’ in order to reduce the file size. To get more images (and more videos and details), go to the below website to download the attached zip file: http://jenh.co/2014/01/09/active-spline-models/

The entire algorithm was initially developed on Mac version of MATLAB R2012b. However, for the convenience of the others, we have tried the code on Windows (also MATLAB R2012b) and made the necessary changes.

The demo video for the technique:
https://www.youtube.com/watch?v=_qCAfkx3-jY