[vtkusers] VTK beginner questions

[Jérôme]

Ali,
It is said to be META format in the example *only* because the
implementation uses the vtkMetaImageReader. If you are able to read
your data with a reader that derives from vtkImageAlgorithm, you will
have to deal with vtkImageData -the "format" in memory-, not DICOM or
META -the format on your disk-.

The documentation of vtkMarchingCubes and vtkDiscreteMarchingCubes
will help to find the appropriate filter for your case.

HTH
Jerome


2010/11/30 Ali Habib <ali.mahmoud.habib at gmail.com>:
> will this work in vtkdicomimages, it say it's for meta images only
> sorry for this naive question
>
> On Mon, Nov 29, 2010 at 2:34 PM, David Doria <daviddoria at gmail.com> wrote:
>>
>> On Mon, Nov 29, 2010 at 5:17 AM, Ali Habib <ali.mahmoud.habib at gmail.com>
>> wrote:
>> > Hi All
>> > I want to ask about the following
>> > 1. I use vttransform class to transfer for example point from position
>> > x,y,z
>> > to x1,y1,z1 I want to know what's the dimension of the transformation
>> > mm. cm
>> > , meter or what.
>>
>> vtkTransform just uses the same "dimensionless" quantities that your
>> data uses. You just specify the number and you have to interpret the
>> units yourself.
>>
>> > 2. I use vtkmarching cube to get values(0.500) I need the iso surface
>> > 500
>> > what shall I do
>>
>> Here is an example of vtkDiscreteMarchingCubes:
>> http://www.vtk.org/Wiki/VTK/Examples/Cxx/Medical/GenerateModelsFromLabels
>>
>> The example of vtkMarchingCubes I was never able to get to work:
>> http://www.vtk.org/Wiki/VTK/Examples/Broken/MarchingCubes
>>
>> David
>
>
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