ITK image data reading and writing and display

ITK image Data read:

1: Set image data types such as common BMP, JPG, JPEG, dicom, RAW, etc.

2: Data read

The following example is the read and write of PNG image data implemented under the console:

#include "itkRGBPixel.h" #include "itkImage.h" #include "itkImageFileReader.h" #include "itkImageFileWriter.h" #  Include "ItkPNGImageIOFactory.h"//ITK file reader and writer Test int main () {//Verify the number of parameters in the command line//software Guide:beginlatex/////The \doxygen{rgbpixel} class was templated over the type used to/ /represent each one of the red, green and blue components.
	A Typical//instantiation of the RGB image class might be as follows. \index{itk::rgbpixel! Instantiation}////software Guide:endlatex//software guide:begincodesnippet typedef itk::rgbpixel< Unsigne
	D char > Pixeltype; typedef itk::image< PIXELTYPE, 2 > Imagetype;//set the type of pic//software Guide:endcodesnippet//S Oftware Guide:beginlatex////The image type is used as a template parameter to instantiate//the reader and writer
	. \index{itk::imagefilereader! RGB Image}//\index{itk::imagefilewriter! RGB Image}////software Guide:endlatex//software guide:begincodesnippet typedef itk::imagefilereader< IMAGETYPE  ;
	Readertype;

	typedef itk::imagefilewriter< IMAGETYPE > Writertype;
	Readertype::P ointer reader = readertype::new ();
	Writertype::P ointer writer = writertype::new ();
Software guide:endcodesnippet ITK::P ngimageiofactory::registeronefactory ();
const char * inputfilename = argv[1];


	const char * outputfilename = argv[2]; Software Guide:beginlatex////The filenames of the input and output files must be provided to the//reader A
	nd writer respectively.
	Software Guide:endlatex//software Guide:begincodesnippet reader->setfilename ("1.png");
	Writer->setfilename ("2.png");
	Software guide:endcodesnippet ImageType::P ointer image = Reader->getoutput ();


	Writer->setinput (image); Software Guide:beginlatex////Finally, execution of the pipeline can be triggered by invoking the//Update () Method in the writer.
	Software Guide:endlatex//software Guide:begincodesnippet writer->update (); Software Guide:endcodesnippet//software Guide:beginlatex/////may have noticed this apart from the DEC Laration of the//\code{pixeltype} There is nothing in this code specific to RGB//images.
	All of the actions required to support color images is implemented//internally in the \doxygen{imageio} objects.
Software Guide:endlatex return exit_success; }

ITK and VTK realize the display of the image:

Using ITK to realize the reading of image data, and then through the connector to the ITK read image data transfer to VTK and then display;

Below is an implementation of the ITK and VTK hybrid programming implemented in the console to realize the display of the image:

#include "itkImage.h" #include "itkImageFileReader.h" #include "itkImageToVTKImageFilter.h" #include " 
ItkPNGImageIOFactory.h "#include" vtkImageViewer.h "#include" vtkRenderWindowInteractor.h "#include" vtkAutoInit.h " Vtk_module_init (vtkRenderingOpenGL2);
VTK was built with VtkRenderingOpenGL2 Vtk_module_init (Vtkinteractionstyle); ITK and VTK to show picture test int main (int argc, char **argv) {typedef itk::image<unsigned char, 2> ImageType   ;//the type of pic typedef itk::imagefilereader<imagetype> READERTYPE;  The class of read pic typedef itk::imagetovtkimagefilter<imagetype> CONNECTORTYPE;
	Connenct ITK and VTK readertype::P ointer reader = readertype::new ();
	Connectortype::P ointer connector = connectortype::new ();

	Reader->setfilename ("1.png");

	ITK::P ngimageiofactory::registeronefactory ();
	Connector->setinput (Reader->getoutput ());

	Connector->update ();
	Vtkimageviewer *viewer = Vtkimageviewer::new (); Vtkrenderwindowinteractor *inTeractor = Vtkrenderwindowinteractor::new ();
	Viewer->setinputdata (Connector->getoutput ());
	Viewer->setupinteractor (interactor); Viewer->getrenderwindow (->setsize),//set window size Viewer->setcolorwindow (255);   Set Window Color Viewer->setcolorlevel (128);
	
	Set the level of window Viewer->render ();
	Interactor->initialize ();
	Interactor->start ();
return exit_success; }