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SimpleGaussian/SimpleGaussian.cxx
/*=========================================================================
*
* Copyright Insight Software Consortium
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0.txt
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*=========================================================================*/
// This one header will include all SimpleITK filters and external
// objects.
#include <
SimpleITK.h
>
#include <iostream>
#include <stdlib.h>
// create convenient namespace alias
namespace
sitk
=
itk::simple
;
int
main (
int
argc,
char
* argv[] ) {
if
( argc < 4 ) {
std::cerr <<
"Usage: "
<< argv[0] <<
" <input> <sigma> <output>\n"
;
return
1;
}
// Read the image file
sitk::ImageFileReader
reader;
reader.
SetFileName
( std::string ( argv[1] ) );
sitk::Image
image = reader.
Execute
();
// This filters perform a gaussian bluring with sigma in physical
// space. The output image will be of real type.
sitk::SmoothingRecursiveGaussianImageFilter
gaussian;
gaussian.
SetSigma
( atof ( argv[2] ) );
sitk::Image
blurredImage = gaussian.
Execute
( image );
// Covert the real output image back to the original pixel type, to
// make writing easier, as many file formats don't support real
// pixels.
sitk::CastImageFilter
caster;
caster.
SetOutputPixelType
( image.
GetPixelID
() );
sitk::Image
outputImage = caster.
Execute
( blurredImage );
// write the image
sitk::ImageFileWriter
writer;
writer.
SetFileName
( std::string ( argv[3] ) );
writer.
Execute
( outputImage );
return
0;
}
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