[vtkusers] CT Gantry Tilt correction

[satwik k]

I'm passing image data as an input to vtkDicomCtRectifier and matrix to a
method volumeMatrix and I'm calling update method...

This update method is taking time... I'm updating the entire cuboid at a
time.. so it is taking 1min.

Regards,
Satwik k

On Nov 28, 2017 9:45 PM, "David Gobbi" <david.gobbi at gmail.com> wrote:

> Hi Satwik,
>
> The VTK imaging pipeline works by "streaming", which means that if you
> display one slice, then the entire pipeline is executed for that slice, and
> when you move to the next slice, it re-executes for that next slice, etc.
>
> It's easy to keep this from occurring.  Just call Update() on the filter
> after you have set up the filter.  Even better, you can use SetInputData()
> and GetOutput() to connect the filter.  In VTK 6, 7, and 8 these methods
> will disable streaming.
>
> If it still updates slowly after you've done this, let me know.
>
> Cheers,
>
>  - David
>
>
> On Tue, Nov 28, 2017 at 8:59 AM, satwik k <satwik.k8 at gmail.com> wrote:
>
>> Hi David,
>>
>> I'm using vtkDicomCtRectifier API to correct gantry rotation. But i'm
>> facing slowness while updating.
>>
>> Is there any better way to speed up the computation. I tried it, by
>> enabling SMP, but also facing slowness.
>>
>>
>>
>> Regards,
>> Satwik k
>>
>> On Nov 28, 2017 10:14 AM, "satwik k" <satwik.k8 at gmail.com> wrote:
>>
>> Hi David, thanx for the reply... VTKDICOM module got compiled after
>> cloning from git.
>>
>> Regards,
>> Satwik k
>>
>> On Mon, Nov 27, 2017 at 10:14 PM, David Gobbi <david.gobbi at gmail.com>
>> wrote:
>>
>>> Please keep your replies on-list (CC to vtkusers at vtk.org).
>>>
>>> It should build either way, but if you are on Windows, cloning is better
>>> because git will give you the correct line-endings for the source files
>>> (i.e. <CR><NL> on Windows instead of just <NL>).
>>>
>>> Just to be sure, did you find the build instructions?  They're on the
>>> following page:
>>> http://dgobbi.github.io/vtk-dicom/doc/api/installation.html
>>>
>>>  - David
>>>
>>>
>>> On Mon, Nov 27, 2017 at 9:28 AM, satwik k <satwik.k8 at gmail.com> wrote:
>>>
>>>> Currently I'm trying to build vtkdicom using vtk 7.1..
>>>> Trying to build using cmake. I'm getting vtkDICOMModule.h missing.
>>>>
>>>> I'm using Windows 7 and I downloaded vtkdicom as zip file from github.
>>>>
>>>> Should I clone it or by downloading zip file also it builds..?
>>>>
>>>> On Nov 27, 2017 21:46, "David Gobbi" <david.gobbi at gmail.com> wrote:
>>>>
>>>>> Please keep your replies on-list.
>>>>>
>>>>> What version of VTK?  I test every release to make sure that vtk-dicom
>>>>> builds, but any information you can give might help me understand what's
>>>>> going wrong.  And what compiler are you using?
>>>>>
>>>>>  - David
>>>>>
>>>>>
>>>>>
>>>>> On Mon, Nov 27, 2017 at 9:04 AM, satwik k <satwik.k8 at gmail.com> wrote:
>>>>>
>>>>>> Ya I'm building with vtk.
>>>>>>
>>>>>> Regards,
>>>>>> Satwik k
>>>>>>
>>>>>> On Nov 27, 2017 21:33, "David Gobbi" <david.gobbi at gmail.com> wrote:
>>>>>>
>>>>>>> How were you building vtkDICOM?  Were you building it with VTK as a
>>>>>>> VTK module (with Module_vtkDICOM=ON), or were you building vtkDICOM by
>>>>>>> itself?
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> On Sun, Nov 26, 2017 at 11:12 PM, Satwik <satwik.k8 at gmail.com>
>>>>>>> wrote:
>>>>>>>
>>>>>>>> Hi users,
>>>>>>>>
>>>>>>>> How can i make CT gantry tilt correction using vtk.
>>>>>>>>
>>>>>>>> I tried using vtkDICOMCTRectifier, but i was not able to compile
>>>>>>>> vtkDICOM
>>>>>>>> module.
>>>>>>>> ERROR: can't able to find vtkDICOMModule.h.
>>>>>>>>
>>>>>>>> Regards,
>>>>>>>> Satwik k
>>>>>>>>
>>>>>>>
>>>>>
>>>
>>
>>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://public.kitware.com/pipermail/vtkusers/attachments/20171128/b782d6e4/attachment.html>