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<div class="moz-cite-prefix">Hi,<br>
<br>
you have to allocate memory for your image data I guess. In my
modification of your example I'm reading an existing image so I
don't have to allocate memory. And I've changed
itkLineConstIterator to the non-const iterator in order to modify
the image data along the line.<br>
<br>
See also
<a class="moz-txt-link-freetext" href="http://www.vtk.org/Wiki/ITK/Examples/Iterators/LineIterator">http://www.vtk.org/Wiki/ITK/Examples/Iterators/LineIterator</a> there
you'll find an example for creating an image from scratch.<br>
<br>
Christina Roßmanith<br>
--<br>
<span
style="font-size:10pt;font-family:"Arial","sans-serif""
lang="EN-GB">Dept. of Neurology</span> <br>
<span
style="font-size:10pt;font-family:"Arial","sans-serif""
lang="EN-GB">University Medical Center Mannheim<br>
<br>
</span><br>
Am 08.10.2012 14:21, schrieb Raviteja, Allaparthi:<br>
</div>
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cite="mid:4E2CCF5105F8F04B8F4C8C27EF66D089014E27F5@011-DB3MPN2-131.MGDPHG.emi.philips.com"
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<p class="MsoPlainText">Hi,</p>
<p class="MsoPlainText"> </p>
<p class="MsoPlainText">I want to draw a line in to an image .</p>
<p class="MsoPlainText">> </p>
<p class="MsoPlainText">> </p>
<p class="MsoPlainText">> </p>
<p class="MsoPlainText">> #include <iostream></p>
<p class="MsoPlainText">> #include “itkImageFileWriter.h”</p>
<p class="MsoPlainText">> #include "itkLineConstIterator.h"</p>
<p class="MsoPlainText">> </p>
<p class="MsoPlainText">> #include "itkImage.h"</p>
<p class="MsoPlainText">> </p>
<p class="MsoPlainText">> </p>
<p class="MsoPlainText">> </p>
<p class="MsoPlainText">> int main(int argc, char *argv[])</p>
<p class="MsoPlainText">> </p>
<p class="MsoPlainText">> </p>
<p class="MsoPlainText">> </p>
<p class="MsoPlainText">> {</p>
<p class="MsoPlainText">> </p>
<p class="MsoPlainText">> if( argc < 2 )</p>
<p class="MsoPlainText">> </p>
<p class="MsoPlainText">> {</p>
<p class="MsoPlainText">> </p>
<p class="MsoPlainText">> std::cerr << "Usage: "
<< std::endl;</p>
<p class="MsoPlainText">> </p>
<p class="MsoPlainText">> std::cerr << argv[0]
<< " outputImageFile " << std::endl;</p>
<p class="MsoPlainText">> </p>
<p class="MsoPlainText">> return EXIT_FAILURE;</p>
<p class="MsoPlainText">> </p>
<p class="MsoPlainText">> }</p>
<p class="MsoPlainText">> </p>
<p class="MsoPlainText">> typedef
itk::Image<unsigned char, 2> ImageType;</p>
<p class="MsoPlainText">> </p>
<p class="MsoPlainText">> ImageType::Pointer image =
ImageType::New();</p>
<p class="MsoPlainText">> </p>
<p class="MsoPlainText">> </p>
<p class="MsoPlainText">> </p>
<p class="MsoPlainText">> typedef itk::Image<unsigned
char, 2> ImageType;</p>
<p class="MsoPlainText">> ImageType::Pointer image =
ImageType::New();</p>
<p class="MsoPlainText">> typedef
itk::ImageFileWriter<ImageType> FileWriterType;</p>
<p class="MsoPlainText">> </p>
<p class="MsoPlainText">> </p>
<p class="MsoPlainText">> typedef
itk::LineConstIterator< ImageType > LineIteratorType;</p>
<p class="MsoPlainText">> ImageType::IndexType point0;</p>
<p class="MsoPlainText">> point0[0] = 46;</p>
<p class="MsoPlainText">> point0[1] = 232;</p>
<p class="MsoPlainText">> </p>
<p class="MsoPlainText">> ImageType::IndexType point1;</p>
<p class="MsoPlainText">> point1[0] = 433;</p>
<p class="MsoPlainText">> point1[1] = 477;</p>
<p class="MsoPlainText">> </p>
<p class="MsoPlainText">> LineIteratorType it( image,
point0, point1);</p>
<p class="MsoPlainText">> it.GoToBegin();</p>
<p class="MsoPlainText">> while (!it.IsAtEnd())</p>
<p class="MsoPlainText">> {</p>
<p class="MsoPlainText">> std::cout <<
(float)it.Get() << std::endl;</p>
<p class="MsoPlainText">> ++it;</p>
<p class="MsoPlainText">> }</p>
<p class="MsoPlainText">> </p>
<p class="MsoPlainText">> </p>
<p class="MsoPlainText">> </p>
<p class="MsoPlainText">> FileWriterType::Pointer writer=
FileWriterType::New();</p>
<p class="MsoPlainText">> </p>
<p class="MsoPlainText">>
writer->SetFileName(argv[1]);</p>
<p class="MsoPlainText">> </p>
<p class="MsoPlainText">> writer->SetInput(image);</p>
<p class="MsoPlainText">> </p>
<p class="MsoPlainText">> writer->Update();</p>
<p class="MsoPlainText">> </p>
<p class="MsoPlainText">> cout<<"--->line
iterator passed "<<endl;</p>
<p class="MsoPlainText">> </p>
<p class="MsoPlainText">> </p>
<p class="MsoPlainText">> </p>
<p class="MsoPlainText">> return EXIT_SUCCESS;</p>
<p class="MsoPlainText">> }</p>
<p class="MsoPlainText">> </p>
<p class="MsoPlainText"> </p>
<p class="MsoPlainText">I am in a confusion of setting the input
here “writer->SetInput(image);” . Could someone please
help me out ?
</p>
<p class="MsoPlainText">I am using InsightToolkit-4.1.0 with
Visual Studio 2010 on Windows 7.</p>
<p class="MsoPlainText"> </p>
<p class="MsoPlainText">> </p>
<p class="MsoPlainText">> </p>
<p class="MsoPlainText">> </p>
<p class="MsoPlainText">> </p>
<p class="MsoPlainText">> </p>
<p class="MsoPlainText">> </p>
<p class="MsoPlainText">> Regards,</p>
<p class="MsoPlainText">> </p>
<p class="MsoPlainText">> Ravi Teja.</p>
<p class="MsoNormal"> </p>
</div>
<br>
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