[ITK] Canny edge detection filter results

[Joao Ascenso]

Hello again,

For some reason this errors appear in itkSparceFieldLayer.hxx

Error C2512 'itk::ListNode<itk::Index<3>>': no appropriate default
constructor available
Error C2027 use of undefined type 'itk::ListNode<itk::Index<3>>'
Error C2227 left of '->Next' must point to class/struct/union/generic type
Error C2027 use of undefined type 'itk::ListNode<itk::Index<3>>'
Error C2227 left of '->Previous' must point to class/struct/union/generic
type

They are related with the compilation of
itk::CannyEdgeDetectionImageFilter. I've been using it so far with no
problem. It started when I run the cmake file again and it complained about
Platform Toolset v140 not being installed. I changed back to v120 to run it
and those errors started.

Generated project again in cmake to make sure it was with Visual Studio 12,
same result.
Any clues on this? Thanks

On 19 January 2016 at 17:05, Joao Ascenso <j.ascenso at campus.fct.unl.pt>
wrote:

> Thank you Dženan.
>
> I did some oversampling between slices to solve the problem, with the
> downside of making it much slower.
>
>
>
> On 18 January 2016 at 21:26, Dženan Zukić <dzenanz at gmail.com> wrote:
>
>> Hi Joao,
>>
>> if you are doing Canny filtering in 3D and then looking at 2D slices, the
>> edges are usually not 1 pixel thick. This is because edge for 3D is a
>> surface, and when you slice that surface along anatomical axes the surface
>> will not be orthogonal to the slices in most places. Where surface is
>> orthogonal, you get nice 1 pixel wide intersections. Where surface is
>> parallel to the slice, you get a sizable intersection surface.
>>
>> Regards,
>> Dženan
>>
>> On Mon, Jan 18, 2016 at 11:47 AM, Joao Ascenso <
>> j.ascenso at campus.fct.unl.pt> wrote:
>>
>>> Hello,
>>> I'm working on OCT images (DICOM volume) of the retina and trying to do
>>> the segmentation of some layers.
>>>
>>> After doing some noise reduction I'm applying the
>>> CannyEdgeDetectionImageFilter, but the result give me thicker edges than
>>> should be expected from Canny.
>>>
>>> Changing thresholds influences the amount of edges detected but don't
>>> improve this issue.
>>>
>>> Anyone have came across similar problem? Any suggestion is welcome.
>>>
>>> Thank you,
>>>
>>> João Ascenso
>>>
>>>
>>> _______________________________________________
>>> Community mailing list
>>> Community at itk.org
>>> http://public.kitware.com/mailman/listinfo/community
>>>
>>>
>>
>
>
> --
> João Ascenso
> Universidade Nova de Lisboa - Faculdade de Ciências e Tecnologias
> Mestrado Integrado em Engenharia Electrotécnica e de Computadores
>
>
>


-- 
João Ascenso
Universidade Nova de Lisboa - Faculdade de Ciências e Tecnologias
Mestrado Integrado em Engenharia Electrotécnica e de Computadores
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