[Paraview] volume comparison

[Utkarsh Ayachit]

ParaView/VTK really doesn't support mixing two overlapping volumes.
Without going into the details, suffice it to say that the rendering
implementation will result in one of the volumes always on "top" of
the other. An alternative is to to render the volumes in 2 separate
views, side-by-side and then link the camera together to interact
simultaneously with the two views -- enabling similar comparison.
Another option is to extract isosurfaces (contours) from the two
volumes and then render those as surface with opacity < 1. Multiple
overlapping surfaces with translucency should work fine.

Utkarsh

On Tue, May 19, 2015 at 10:22 PM, Christopher Snyder
<22csnyder at gmail.com> wrote:
> Hi,
>
> I have two 3D image that I would like to compare to see  if they are "the
> same." I thought it would be illustrative to overlay the two volumes in
> different colors with some opacity.
>
> This presents some difficulty. In my mind I would be able to have 2 volumes
> overlayed, full control of the color map of each volume, and be able to
> control rotation and translation of each volume individually.
>
> If that's not possible directly in the GUI, maybe it's possible through the
> python console?
>
> Best,
> Chris
>
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