[vtkusers] Help with VolumeRayCast
dgarlor at gmail.com
Fri Jun 10 12:28:17 EDT 2005
Thank you very much, it's slower the vtkFixedPointVolumeRayCastMapper
than the vtkVolumeRayCastMapper? My volume is quite big and it already
takes a while to render....thanks.
Lisa Avila wrote:
> Hello Daniel,
> Yes - if you are using the nightly VTK use
> vtkFixedPointVolumeRayCastMapper. Give it input that have two
> component scalars. The first component will be used to lookup color,
> and the second will be used to lookup opacity as long as you set
> IndependentComponentsOff on the vtkVolumeProperty (otherwise two color
> transfer functions and two opacity transfer functions will be used and
> the final results blended per sample)
> At 08:32 AM 6/10/2005, Daniel Garcia wrote:
>> I need to get the answer to a little question. Is it possible to
>> visualise a image with two components using the first component to get
>> the color and the second to get the opacity?
>> I want to make a volume render but I have to treat in a different way
>> one region of interest but the gray intensities more or less the
>> same....any ideas?
>> Thank you all
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