[ITK-users] Extract Line/Intensity profile from image given start and stop points

[Dženan Zukić]

Hi,

resample <https://itk.org/Doxygen/html/classitk_1_1ResampleImageFilter.html>
image filter can do the heavy lifting. But you do need to provide an
appropriate transform
<https://itk.org/Doxygen/html/classitk_1_1Rigid3DTransform.html>, relying
on linear algebra <https://en.wikipedia.org/wiki/Linear_algebra> - point
transformations etc.

Regards,
Dženan

On Sat, Feb 3, 2018 at 2:37 AM, G Tom <gregthom992 at gmail.com> wrote:

> Hi ,
> I looked at the link you mentioned; the idea that comes to mind now is
> that I first rotate my image so that one of the axis is aligned with the
> line, then extract scan line along the rotated image axis possibly after re
> sampling.
> How do I rotate the image about a line defined by two points ?
>
> On Sat, Feb 3, 2018 at 1:39 AM, G Tom <gregthom992 at gmail.com> wrote:
>
>> Do you have an idea how to do this averaging over the line with a radius ?
>>
>> I am also looking at vtkprobefilter.
>>
>> Thanks
>>
>> GT
>>
>> On Wed, Jan 31, 2018 at 6:01 PM, Dženan Zukić <dzenanz at gmail.com> wrote:
>>
>>> Hi Tom,
>>>
>>> BresenhamLine does not have a radius, it is only one pixel wide. If you
>>> need some kind of averaging, you will probably need to resample the image.
>>> There was a similar question last year, that thread
>>> <https://public.kitware.com/pipermail/community/2017-April/012924.html>
>>> will probably be helpful.
>>>
>>> Regards,
>>> Dženan
>>>
>>> On Wed, Jan 31, 2018 at 4:23 PM, gregthom992 <gregthom992 at gmail.com>
>>> wrote:
>>>
>>>> Hi Dzenan,
>>>>
>>>> itk::BresenhamLine seems to be what I need. Thanks for pointing that
>>>> out. I
>>>> am going through the example, how do I give it a radius ?
>>>>
>>>> Thanks
>>>>
>>>> GT
>>>>
>>>>
>>>>
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