[vtkusers] Reslicing issues (Continued)

[Xiaofeng Z]

Scott,

 

try the attached file and let me know if it works.

 

Notice that I use my own customized DICOM reader, which does not invert the rows, hence the world x and y coordinate increases from lower left corner to upper right corner on the screen.

Xiaofeng


 


Date: Tue, 11 May 2010 12:01:15 -0500
From: Scott.Johnson at neuwave.com
To: vtkusers at vtk.org
Subject: [vtkusers] Reslicing issues (Continued)





Hi Folks,
 
I officially throw myself on the mercy of the VTK Gods.
 
My platform is VTK 5.4.2 on Windows XP.
 
I’ve been working on this reslice issue off and on for awhile now and am officially stumped.  I’ve worked up a piece of code which could eventually be turned into an example for the examples list if desired.   I’ll attach the code and a CMakeLists.txt file.  If the image data I’ve been using is needed I’ll need somewhere to put it.  (It’s 22 MB zipped and not suitable to attach to an email.)
 
The application is attempting to display resliced image data and an intersection with a polygonal shape.  The Axial view works fine, but the other views don’t show the sliced sphere in the proper location.  They do show up on the proper slice, but not in the proper XY location in the viewport.  I seem to be running into a fundamental problem when converting between the original image coordinate system and the resliced coordinate system.
 
The attached code is annotated with ‘PROBLEM’ in the comments which is outlining the problems I’ve been running into.  I’ll chalk this up to a learning experience which builds character.
 
Any help is appreciated.  Thanks
 
                                -- Scott
  		 	   		  
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