[vtkusers] Visualization of an image + depth map

[David E DeMarle]

Probably the most straightforward way is to read the RGB image into an
vtkImageData with the depth information included or added in as an
additional array (either as part of the same file or by reading that
from a secondary file and then vtkImageAppending attributes to put
them together). Finally apply the vtkWarpScalar filter to stretch it
out in the Z direction.

See: http://www.vtk.org/doc/nightly/html/classvtkWarpScalar.html

Try it out in ParaView, it should only take a couple of minutes to see
if it works to your liking.

David E DeMarle
Kitware, Inc.
R&D Engineer
28 Corporate Drive
Clifton Park, NY 12065-8662
Phone: 518-371-3971 x109



On Mon, Feb 7, 2011 at 6:52 AM, Stefan Walk <stefan.walk+vtk at gmail.com> wrote:
> Hi,
>
> I'm looking for a way to visualize an image (dimensions somewhere between 640x480  and 1280x960) from a calibrated camera + a dense depth map (estimated from a stereo pair). With this information, i can compute the 3D coordinates of the regions that produced each pixel, and I'd like to visualize that. Ideally, when the virtual camera is positioned like the physical camera was, the visualization should just look like the image, and the 3d structure becomes apparent when moving the camera. Does VTK provide a convenient way to do that (I'm completely unfamiliar with it, I'm looking for the right tools to do this task now)? If yes, are there examples that are close to what I want to do?
>
> Best regards,
> Stefan
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