[vtkusers] Can any body help!
Engr. Saira Saleem Pathan
sarakhan_engr at hotmail.com
Mon Apr 23 15:13:06 EDT 2007
hi marc
thanks again but :( the same problem is coming
terminate called after throwing an instance of 'std::bad_alloc'
what(): St9bad_alloc
Aborted
i have made changes in code which u advise me.
saira
<html><DIV>
<P><STRONG><FONT color=#0000ff>Saira Saleem Pathan</FONT></STRONG><IMG
height=2 src="http://graphics.hotmail.com/greypixel.gif" width="100%"
vspace=9></P>
<P>Lecturer, Ph.D. Scholar</P>
<P>Department of Computer System and Software
Engineering Merhan
Univeristy of Engineering and Technology,
Pakistan.
</P>
<P>Contact: cell : 92-0333 2265249, office 92-022-2772250 ext(4215)</P>
<P>Email: <A
href="mailto:sarakhanengr at gmail.com">sarakhanengr at gmail.com</A>, <A
href="mailto:saira99cs07 at yahoo.com">saira99cs07 at yahoo.com</A></P>
<P> </P>
<P> </P></DIV></html>
>From: Marc Cotran <marc at cotran.ca>
>To: "Engr. Saira Saleem Pathan" <sarakhan_engr at hotmail.com>
>CC: amy.squillacote at kitware.com, vtkusers at vtk.org
>Subject: Re: [vtkusers] Can any body help!
>Date: Mon, 23 Apr 2007 15:05:04 -0400
>
>Hi Saira,
>
>At a glance, I can see that your output scalar type is wrong... you should:
>
>imageShiftScale->SetOutputScalarTypeToUnsignedShort();
>
>or
>
>imageShiftScale->SetOutputScalarTypeToUnsignedChar();
>
>Marc
>
>Engr. Saira Saleem Pathan wrote:
>>hi
>>thanks both of u
>>well, the technique work and there is not error on compile time, but when
>>i m running it will take too much time and generate "segmentation fault".
>>well, the same data i can see using ImageSlice.cxx example of vtk.
>>can u please tell me what wrong here in the code:
>>
>>vtkImageShiftScale *imageShiftScale = vtkImageShiftScale ::New();
>> imageShiftScale->SetInput(reader->GetOutput());
>> imageShiftScale->SetOutputScalarTypeToShort();
>> //imageShiftScale->SetShift(0);
>> //imageShiftScale->SetScale(1);
>>
>>
>>vtkImageResample *resample = vtkImageResample::New();
>>resample->SetInput(imageShiftScale->GetOutput());
>>resample->SetAxisMagnificationFactor(0, 7.63);
>>resample->SetAxisMagnificationFactor(1, 7.63);
>>resample->SetAxisMagnificationFactor(2, 7.5);
>>resample-> Update();
>>
>>vtkImageChangeInformation *cInfor =vtkImageChangeInformation::New();
>>cInfor->SetInput(resample->GetOutput());
>>cInfor->SetOutputSpacing(4.6875, 4.6875, 15);
>>cInfor->Update();
>>
>>//# Create transfer mapping scalar value to opacity
>>vtkPiecewiseFunction *opacityTFunc = vtkPiecewiseFunction::New();
>> opacityTFunc->AddPoint(20,0.0);
>> opacityTFunc->AddPoint(255,0.2);
>>
>>//# Create transfer mapping scalar value to color
>>vtkColorTransferFunction *colorTFunc = vtkColorTransferFunction::New();
>> colorTFunc->AddRGBPoint(0.0,0.0,0.0,0.0);
>> colorTFunc->AddRGBPoint(64.0,1.0,0.0,0.0);
>> colorTFunc->AddRGBPoint(128,0.0,0.0,1.0);
>> colorTFunc->AddRGBPoint(255,0.0,0.2,0.0);
>>
>>// Create the property for Volume
>> vtkVolumeProperty *volumeProperty = vtkVolumeProperty::New();
>> volumeProperty->SetColor(colorTFunc);
>> volumeProperty->SetScalarOpacity(opacityTFunc);
>> volumeProperty->ShadeOn();
>> volumeProperty->SetInterpolationTypeToLinear();
>>
>>
>> //Create the objects specific to 2D texture mapping
>> vtkVolumeTextureMapper2D *volumeMapper=
>>vtkVolumeTextureMapper2D::New();
>> volumeMapper->SetInput(cInfor->GetOutput());
>>
>> //create the Volume
>> vtkVolume *volume = vtkVolume ::New();
>> volume->SetMapper(volumeMapper);
>> volume->SetProperty(volumeProperty);
>> renderer->AddProp(volume);
>>
>>
>> vtkRenderWindow *window = vtkRenderWindow::New();
>>
>> window->AddRenderer(renderer);
>>
>>
>>
>><html><DIV>
>><P><STRONG><FONT color=#0000ff>Saira Saleem Pathan</FONT></STRONG><IMG
>>height=2 src="http://graphics.hotmail.com/greypixel.gif" width="100%"
>>vspace=9></P>
>><P>Lecturer, Ph.D. Scholar</P>
>><P>Department of Computer System and Software
>>Engineering Merhan
>>Univeristy of Engineering and Technology,
>>Pakistan.
>></P>
>><P>Contact: cell : 92-0333 2265249, office 92-022-2772250
>>ext(4215)</P>
>><P>Email: <A
>>href="mailto:sarakhanengr at gmail.com">sarakhanengr at gmail.com</A>, <A
>>href="mailto:saira99cs07 at yahoo.com">saira99cs07 at yahoo.com</A></P>
>><P> </P>
>><P> </P></DIV></html>
>>
>>
>>
>>
>>
>>>From: Marc Cotran <marc at cotran.ca>
>>>To: "Engr. Saira Saleem Pathan" <sarakhan_engr at hotmail.com>
>>>CC: vtkusers at vtk.org
>>>Subject: Re: [vtkusers] Can any body help!
>>>Date: Mon, 23 Apr 2007 14:18:01 -0400
>>>
>>>Hi Saira,
>>>
>>>This is a common problem, and you can most likely find other threads on
>>>the mailing list for it.
>>>
>>>You have two options here. One is to use a mapper that supports the short
>>>data type (eg. vtkFixedPointMaper) and pass your data as is. The other is
>>>change the data's scalar type and then use the ray cast mapper. To change
>>>the scalar type without compromising the range of your data, take a look
>>>at vtkImageShiftScale.
>>>
>>>Marc
>>>
>>>Engr. Saira Saleem Pathan wrote:
>>>>hi
>>>>I m writing a code and i can read Dicom data series and i want to apply
>>>>Volume Rendering on that data which i READ.
>>>>the following error is coming.
>>>>
>>>>ERROR: In /usr/not-backed-up/VTK/Rendering/vtkVolumeRayCastMapper.cxx,
>>>>line 325
>>>>vtkOpenGLVolumeRayCastMapper (0x894b6f0): Cannot volume render data of
>>>>type short, only unsigned char or unsigned short.
>>>>
>>>>thanks
>>>>
>>>>_________________________________________________________________
>>>>FREE pop-up blocking with the new MSN Toolbar - get it now!
>>>>http://toolbar.msn.click-url.com/go/onm00200415ave/direct/01/
>>>>
>>>>_______________________________________________
>>>>This is the private VTK discussion list. Please keep messages on-topic.
>>>>Check the FAQ at: http://www.vtk.org/Wiki/VTK_FAQ
>>>>Follow this link to subscribe/unsubscribe:
>>>>http://www.vtk.org/mailman/listinfo/vtkusers
>>>
>>
>>_________________________________________________________________
>>Express yourself instantly with MSN Messenger! Download today it's FREE!
>>http://messenger.msn.click-url.com/go/onm00200471ave/direct/01/
>>
>
>
_________________________________________________________________
Express yourself instantly with MSN Messenger! Download today it's FREE!
http://messenger.msn.click-url.com/go/onm00200471ave/direct/01/
More information about the vtkusers
mailing list