Hi Nancy,
I think I know what it is.
In any case, this is how it should work:
A) in general vmtk will use ITK to read images, and it will do so unless you
manually specify -useitk 0 on the vmtkimagereader.
The syntax for reading in the standard way is
vmtkimagereader -ifile E:\VTK\VTK-5.8\vtkdata-5.8.0\Data\BlueCircle.png --pipe
vmtkimageviewer
ITK will take care of recognizing the format automatically. In this case you
can shorten it simply to
vmtkimageviewer -ifile E:\VTK\VTK-5.8\vtkdata-5.8.0\Data\BlueCircle.png
There's a but: ITK, although it's a better choice for medical image formats,
can only read 1 channel png's so if you want to read a
3 channel image you have to use B)
B) the alternative is to use VTK to read image files. This is how you do it:
vmtkimagereader -useitk 0 -f png -ifile
E:\VTK\VTK-5.8\vtkdata-5.8.0\Data\BlueCircle.png -d --pipe vmtkimageviewer
Note that in the pipes above I haven't used the -d option at all: the filename
should be complete with the full path (E:\VTK...). This
is very likely the issue you were having with your script.
Now, the syntax for reading DICOM is the following
vmtkimagereader -ifile E:\DICOM\SERIES_1\IM0001 --pipe vmtkimageviewer
where I just made up a path. The path should specify the first file in the
DICOM series you're interested in.
A clarification with the -d option: it's for reading file series (DICOM, png,
etc) using the VTK readers. You should use it coupled
with the -prefix and -pattern options for non-DICOM data. For DICOM data, -f
dicom -d E:\DICOM\SERIES_1 suffices, no need of
-prefix and -pattern. However, using the VTK DICOM reader is discouraged in
favor of ITK, as shown above.
Hope this helps
Luca
PS: one unrelated suggestion, you can omit the .py at the end of script names
(vmtkimagereader -ifile ... instead of vmtkimagereader.py -ifile ...).
On Nov 28, 2012, at 2:26 AM, Nancy wrote:
> Hi ,
> i had installated vmtk and pythonxy ,now i want to take a test,but i met some
> problems.For example:
> 1、 i want to open E:\VTK\VTK-5.8\vtkdata-5.8.0\Data\BlueCircle.png
> <截图1.png>
> 、
> i type in cmd :
> vmtkimagereader.py -f png -ifile BlueCircle.png -d
> E:\VTK\VTK-5.8\vtkdata-5.8.0\Data --pipe vmtkimageviewer.py
> get result ：
> <截图2.png>
>
> 2、if i try to open dicom picture ,there are also errors like this:
> <截图3.png>
> <截图4.png>
>
> Do you know this is why?
> how do i do?
>
> Regards,
>
>
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