[Insight-users] Hough Circle only work with PNG file?

[Luis Ibanez]

Hi Jiangtao

The outcome of the Hought Filter should be independent
of the file format used for reading the image in.

Can you please send me the .BMP image that you are
trying to run through the filter ?

Also, send me the source code of the minimal program
in which you observe this problem.


You may want to compare that code with the content
of the file:


Insight/Testing/Code/BasicFilters/
        itkHoughTransform2DCirclesImageTest.cxx



You shouldn't have to convert the file format from BMP
to PNG in order to process the image with ITK.



       Regards,


             Luis


----------------------------------------------------------------------------------
On Tue, May 4, 2010 at 4:33 AM, Jiangtao Li <nelfylee at gmail.com> wrote:
> Dear all,
> I am trying to extract a circle from a small bmp image, the circle is very
> clear and without any noise.
> When I use Hough Circle of ITK to extract it, the result (radius and center)
> is always wrong. Later,
> I converted this bmp file to PNG file, and the algorithm works.
> And also, I've tried other format suck as VTK file and JPG file. I found
> hough algorithm only works with PNG file. I also changed different Image
> Reader with different pixel type.
> In this case, if I want to integrate Hough into my program, what kind of
> internal image type should I use?
> Did I miss something such as Spacing info? Please give me some suggestions!
> Thank you very much
> Best Regards!
> Jiangtao
> --
> From Jiangtao Li @ Seoul National University
>
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