[vtkusers] How to store rendered volume in memory :: Help Needed

[cspl]

Hi Shyam,
     Thanks for ur suggestion. 
      Let me explain my problem in detail. I am applying MIP function on the input volume and rendering it to view it. Now i want to select the ROI in the rendered volume, clip the ROI and store the ROI in a file. I have my own algorithm of ROI. Now the problem is with saving the ROI. For saving ROI or atleast the entire rendered volume, i should get the rendered volume into a buffer for further processing. I think we can get the redered volume only from vtkrenderer or vtkrenderwindow or vtkrenderwindowinteractor. I could not find any function which serve my purpose. 
       I found a function "GetPixelData" in vtkRenderWindow class which returns the pixel data visible on the vtk window. But it is just a slice. What i want is the entire volume which i gave as input. I mean if i give, lets say, 10 images as input, after redering i should able to get 10 slices as output in a buffer for further processing. Is there any class which exposes a function which help me in this regard.
       Following are the classes i am using.
       vtkPiecewiseFunction
       vtkVolumeProperty
        vtkVolumeRayCastMapper
        vtkVolumeRayCastMIPFunction
        vtkVolume
        vtkRenderer
        vtkRenderWindow
        vtkRenderWindowInteractor

        I hope u got my problem.
        Please help in this regard.
        Thanks in advance.

-Regards,
    Sateesh.


        

----- Original Message ----- 
  From: R K Shyamprakash 
  To: 'cspl' ; vtkusers at public.kitware.com 
  Sent: Thursday, March 27, 2003 11:04 AM
  Subject: RE: [vtkusers] How to store rendered volume in memory :: Help Needed


  Hi sateesh,
              Are you refering at vtkAppendPolydata? Just guessing!

  regards
  Shyam
    -----Original Message-----
    From: vtkusers-admin at public.kitware.com [mailto:vtkusers-admin at public.kitware.com]On Behalf Of cspl
    Sent: Thursday, March 27, 2003 10:52 AM
    To: vtkusers at public.kitware.com
    Subject: [vtkusers] How to store rendered volume in memory :: Help Needed


    Hi all,
       Is there any way to store the entire volume, after rendering, into a buffer. I have applied MIP on the volume and rendered the volume. Now i  want to store the rendered volume into a buffer for further processing. If i give 5 images as input then i should able to store all the 5 rendered images in buffer. Is there any function which will help me in this regard.

       Thanks in advance.

    -Regard,
       Sateesh.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.vtk.org/pipermail/vtkusers/attachments/20030327/6d00d326/attachment.htm>