[vtkusers] Convert VTK 3D world coordinates to 3D DICOM coordinate

[ericphd]

Thanks for your reply hongsongyang,

Okay..maybe I should explain more here.
The coordinates/annotations generated by the tool (ITK/VTK) I presume in
World coordinate?

If they are in world coordinate then what I want to do is to write a MatLab
code to convert all those world coordinates into 2D with top left corner
starts from (0,0). Basically I want to convert those world coordinate into
2D image plane as we viewing image on our computer screen.

* Maybe ignore the 3D dicom coordinate here. I just want to convert from
world coordinate into 2D image plane coordinate. For example something like
this

In world coordinate generated from VTK (-2.23,6.95,17.5) and into 2D
(209,264) 

But don't worry about the matlab code because i can write it. I just want to
know the mathematical formula to do the conversion.

Thanks,
Eric



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