[vtkusers] vtkVolumeRayCastCompositeFunction: AIP?

[Karthik Krishnan]

Strongly recommend that you read the Volume rendering chapter from the guide
or any other book / several online resources.

On Thu, Jun 3, 2010 at 7:37 PM, Jothy <jothybasu at gmail.com> wrote:

> I have a basic doubt on this compositing function.
>
> What this function actually does? Let's say I have a imagedata , now I
> trace the ray from 0 degree through it. Does it accumulates the scalar
> values along the ray, or as it traverses the image does it keep reducing
> some other parameters??
>
> Here is an example, let's say the ray passe through the diagonal, 1,4,6.
> What it does actually?
>
>
> 1   2   3
> 3   4   5
> 0   3   6
>
>
> Thanks,
>
> Jothy
>
>
>
>
>
> On Thu, Jun 3, 2010 at 2:44 PM, Karthik Krishnan <
> karthik.krishnan at kitware.com> wrote:
>
>> No we don't have a mean (or xray) function. It should be relatively
>> straightforward for you to take vtkVolumeRayCastMIPFunction and modify it to
>> create a vtkVolumeRayCastMeanFunction . If you do succeed, please feel fee
>> to contribute it back to the VTK Journal (
>> http://www.midasjournal.org/?journal=35) . In fact somebody posted the
>> mean function, (see xray function) on the vtkusers list a while ago :
>>
>> http://www.vtk.org/pipermail/vtkusers/2009-October/103367.html
>>
>> --
>> karthik
>>
>> On Thu, Jun 3, 2010 at 6:39 PM, Daniela Sacchetto <
>> danysunflower at hotmail.it> wrote:
>>
>>>  Hi everyone
>>>
>>> I'm working with vtkVolumeRayCastCompositeFunction but my results aren't
>>> excellent.
>>>
>>> I know that there are other two methods to do something similar:
>>>
>>> -vtkVolumeRayCastIsosurfaceFunction
>>> -vtkVolumeRayCastMIPFunction
>>>
>>> But I would like to have a sort of AIP=Averaged Intensity Projection
>>> Method... Does it exist something similar in VTK? Could anyone help me?
>>>
>>> Regards
>>> Daniela
>>>
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>>
>>
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