Obtain new point after reslice a NIFTII image

[lassoan (Andras Lasso)]

@LoiseauNicolas

I can’t just use with python without GUI/interface. I want to affine transform some images automatically and find new positions of landmarks in a program.

You can choose to use 3D Slicer with or without GUI. You can even use it as a Jupyter notebook kernel (you can try it in your web browser, without installing anything - see here: GitHub - Slicer/SlicerJupyter: Extension for 3D Slicer that allows the application to be used from Jupyter notebook).

@LoiseauNicolas

I’ve tried to transform a niftii volume with affine transform and i’ve used AutoCropOutputOn() to crop all new reslice image without loose anything. That work really good but i really have a problem to get new landmarks positions.

You should be able to apply the same transform to your landmark points as you applied to the image (simply multiply the point’s homogeneous coordinates by the transformation matrix).