[vtkusers] vtkVolumeRayCastCompositeFunction: AIP?

[Jothy]

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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