[vtkusers] canny edge detection help

[Bill Lorensen]

Remove the

vtkImageLuminance from the pipeline.


On Thu, Aug 24, 2017 at 12:17 PM, Ramamurthy, Rajesh (GE Global
Research, US) <ramamurr at research.ge.com> wrote:
> Hi All,
>
>
>
> I am new to using VTK and hence I am trying to work with the toolkit using
> the online examples for canny edge detection and reading DICOM images.
>
>
>
> My need is to do sub-pixel canny edge detection of a DICOM image and then
> write out the results to a file. I found examples for both and combined it
> together into a test app code as below.
>
>
>
> The code builds, and runs but I am always getting no edges written to my
> output edges.txt file. I tried playing with different canny parameters but
> it did not seem to change the situation. I want the edges of the attached
> DCM file to be found, I have a sample edge detection shown in the attached
> text file here.
>
>
>
> Thanks!
>
> Rajesh
>
>
>
>
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