|
|
| (One intermediate revision by one other user not shown) |
| Line 1: |
Line 1: |
| ==ImportImageFilter.cxx==
| | \{{warning|1=The media wiki content on this page is no longer maintained. The examples presented on the https://itk.org/Wiki/* pages likely require ITK version 4.13 or earlier releases. In many cases, the examples on this page no longer conform to the best practices for modern ITK versions. |
| <source lang="cpp">
| | }} |
| #include "itkImage.h"
| |
| #include "itkImportImageFilter.h"
| |
| | |
| #include "itkImageFileWriter.h"
| |
| | |
| int main(int, char * [])
| |
| { | |
| typedef unsigned char PixelType;
| |
| const unsigned int Dimension = 3;
| |
| typedef itk::Image< PixelType, Dimension > ImageType;
| |
| typedef itk::ImportImageFilter< PixelType, Dimension > ImportFilterType;
| |
| | |
| ImportFilterType::Pointer importFilter = ImportFilterType::New();
| |
| | |
| ImportFilterType::SizeType size;
| |
| | |
| size[0] = 200; // size along X
| |
| size[1] = 200; // size along Y
| |
| size[2] = 200; // size along Z
| |
| | |
| ImportFilterType::IndexType start;
| |
| start.Fill( 0 );
| |
| | |
| ImportFilterType::RegionType region;
| |
| region.SetIndex( start );
| |
| region.SetSize( size );
| |
| | |
| importFilter->SetRegion( region );
| |
| | |
| double origin[ Dimension ];
| |
| origin[0] = 0.0; // X coordinate
| |
| origin[1] = 0.0; // Y coordinate
| |
| origin[2] = 0.0; // Z coordinate
| |
| | |
| importFilter->SetOrigin( origin );
| |
| | |
| double spacing[ Dimension ];
| |
| spacing[0] = 1.0; // along X direction
| |
| spacing[1] = 1.0; // along Y direction
| |
| spacing[2] = 1.0; // along Z direction
| |
| | |
| importFilter->SetSpacing( spacing );
| |
| | |
| const unsigned int numberOfPixels = size[0] * size[1] * size[2];
| |
| PixelType * localBuffer = new PixelType[ numberOfPixels ];
| |
| | |
| const double radius = 80.0;
| |
| | |
| const double radius2 = radius * radius;
| |
| PixelType * it = localBuffer;
| |
| | |
| for(unsigned int z=0; z < size[2]; z++)
| |
| {
| |
| const double dz = static_cast<double>( z ) - static_cast<double>(size[2])/2.0;
| |
| for(unsigned int y=0; y < size[1]; y++)
| |
| {
| |
| const double dy = static_cast<double>( y ) - static_cast<double>(size[1])/2.0;
| |
| for(unsigned int x=0; x < size[0]; x++)
| |
| {
| |
| const double dx = static_cast<double>( x ) - static_cast<double>(size[0])/2.0;
| |
| const double d2 = dx*dx + dy*dy + dz*dz;
| |
| *it++ = ( d2 < radius2 ) ? 255 : 0;
| |
| }
| |
| }
| |
| }
| |
| | |
| const bool importImageFilterWillOwnTheBuffer = true;
| |
| importFilter->SetImportPointer( localBuffer, numberOfPixels, | |
| importImageFilterWillOwnTheBuffer );
| |
| | |
| typedef itk::ImageFileWriter< ImageType > WriterType;
| |
| WriterType::Pointer writer = WriterType::New();
| |
| | |
| writer->SetFileName("test.png");
| |
| | |
| writer->SetInput( importFilter->GetOutput() );
| |
| writer->Update();
| |
| | |
| return EXIT_SUCCESS;
| |
| }
| |
| | |
| </source>
| |
| | |
| {{ITKCMakeLists|ImportImageFilter}}
| |
