[Rtk-users] Issue with Cuda filter

[Simon Rit]

Hi,
The two algorithms differ: Cuda uses trilinear interpolation where
Joseph uses bilinear interpolation in the slices of the main
direction. Other than that, you should get very similar results
(visually) from the same input images and geometry.
Don't hesitate to share the dataset if you'd like us to test it. I'm
not sure what you mean by "any config parameters to check whether CUDA
is actually working or not. "? But looking at the output and checking
that the result looks good is definitely the first step.
Best regards,
Simon

On Fri, Jan 27, 2017 at 5:37 PM, Yu Zhang <yuzhang at echopixeltech.com> wrote:
> Hi Simon,
>
> May I ask you a question about how to use the following filters:
> CudaForwardProjectionImageFilter is similar to
> JosephForwardProjectionImageFilter
>
> I was able to get satisfied results using
> JosephForwardProjectionImageFilter,
> However, when I switch to CudaForwardProjectionImageFilter, the output is
> all zero.
> I run the test of those filters, which turns out to be successful. But I am
> not aware of
> any config parameters to check whether CUDA is actually working or not.
> The version I am using is rtk 1.3.0, but it is the same as previous version
> from github.
>
> Best regards,
> Yu Zhang
>
>
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