What is your end goal? Volume rendering a collection of MRI volumes (together? non-overlapping?) that may not be axis aligned? One way of doing this in ParaView would be to convert them to unstructured grid (by using clean-to-grid for example) but this comes at a large memory overhead and performance overhead. The simpler and more efficient way of doing it is to load each MRI volume as a separate image data and then use the Transformation setting from the Display panel to position and orient them as necessary. It would pretty straightforward to write a macro to do all of this automatically given a particular file.
On Mon, May 21, 2012 at 7:57 AM, Christoffer Green < [email protected]> wrote: > Hello > > What are your thoughts on the best file format to use when doing volume > rendering in ParaView? > > I have been trying out the ensight format and the vtk format and find them > less then ideal, is there anything better? > > Findings for ensight: > ParaView does not appear to support volume rendering of ensight files due > to it not supporting volume rendering of multi-block datasets and the > ensight reader always imports things in multi block mode. There are ways to > get around this (tetrahedralize together with calculator filter) but the > end results appear to be extremely slow when volume rendering. > > Findings for vtk: > Importing a volume of data as image data and volume rendering it works > well but image data in the vtk format must always be aligned to the global > orthogonal (x, y, z) axes so it cannot be rotated. Since we have multiple > data files that all must be positioned and rotated in a scene (MRI volumes > and image planes) this makes things uncomfortable. There is a transform > filter in ParaView but after applying it to image data it changes the data > type to curvalinear grid which ParaView cannot volume render. > > > What are the alternatives? > > BR/ Christoffer > > _______________________________________________ > Powered by www.kitware.com > > Visit other Kitware open-source projects at > http://www.kitware.com/opensource/opensource.html > > Please keep messages on-topic and check the ParaView Wiki at: > http://paraview.org/Wiki/ParaView > > Follow this link to subscribe/unsubscribe: > http://www.paraview.org/mailman/listinfo/paraview > >
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