VTK系列43_图像进行各向异性滤波（图像光滑）

实例43：各向异性滤波（图像光滑）

#include "vtkAutoInit.h" 
VTK_MODULE_INIT(vtkRenderingOpenGL2);
VTK_MODULE_INIT(vtkInteractionStyle);

#include <vtkSmartPointer.h>
#include <vtkCamera.h>
#include <vtkImageActor.h>
#include <vtkImageAnisotropicDiffusion2D.h>
#include <vtkImageAnisotropicDiffusion3D.h>
#include <vtkImageCast.h>
#include <vtkImageData.h>
#include <vtkImageMandelbrotSource.h>
#include <vtkInteractorStyleImage.h>
#include <vtkJPEGReader.h>
#include <vtkRenderWindow.h>
#include <vtkRenderWindowInteractor.h>
#include <vtkRenderer.h>

//测试图像：../data/lena-gray.jpg
int main(int argc, char* argv[])
{
	vtkSmartPointer<vtkJPEGReader> reader =
		vtkSmartPointer<vtkJPEGReader>::New();
	reader->SetFileName("lena-gray.jpg");

	vtkSmartPointer<vtkImageAnisotropicDiffusion2D> diffusion =
		vtkSmartPointer<vtkImageAnisotropicDiffusion2D>::New();
	diffusion->SetInputConnection(reader->GetOutputPort());
	diffusion->SetNumberOfIterations(10);
	diffusion->SetDiffusionThreshold(20);
	diffusion->Update();

	vtkSmartPointer<vtkImageActor> originalActor =
		vtkSmartPointer<vtkImageActor>::New();
	originalActor->SetInputData(reader->GetOutput());

	vtkSmartPointer<vtkImageActor> diffusionActor =
		vtkSmartPointer<vtkImageActor>::New();
	diffusionActor->SetInputData(diffusion->GetOutput());

	double leftViewport[4] = {0.0, 0.0, 0.5, 1.0};
	double rightViewport[4] = {0.5, 0.0, 1.0, 1.0};

	vtkSmartPointer<vtkCamera> camera =
		vtkSmartPointer<vtkCamera>::New();
	vtkSmartPointer<vtkRenderer> leftRenderer =
		vtkSmartPointer<vtkRenderer>::New();
	leftRenderer->SetViewport(leftViewport);
	leftRenderer->AddActor(originalActor);
	leftRenderer->SetBackground(1.0, 1.0, 1.0);
	leftRenderer->SetActiveCamera(camera);
	leftRenderer->ResetCamera();

	vtkSmartPointer<vtkRenderer> rightRenderer =
		vtkSmartPointer<vtkRenderer>::New();
	rightRenderer->SetViewport(rightViewport);
	rightRenderer->SetBackground(1.0, 1.0, 1.0);
	rightRenderer->AddActor(diffusionActor);
	rightRenderer->SetActiveCamera(camera);

	vtkSmartPointer<vtkRenderWindow> renderWindow =
		vtkSmartPointer<vtkRenderWindow>::New();
	renderWindow->AddRenderer(leftRenderer);
	renderWindow->AddRenderer(rightRenderer);
	renderWindow->SetSize(640, 320);
	renderWindow->Render();
	renderWindow->SetWindowName("AnistropicFilteringExample");

	vtkSmartPointer<vtkRenderWindowInteractor> renderWindowInteractor =
		vtkSmartPointer<vtkRenderWindowInteractor>::New();
	vtkSmartPointer<vtkInteractorStyleImage> style =
		vtkSmartPointer<vtkInteractorStyleImage>::New();

	renderWindowInteractor->SetInteractorStyle(style);
	renderWindowInteractor->SetRenderWindow(renderWindow);
	renderWindowInteractor->Initialize();
	renderWindowInteractor->Start();

	return EXIT_SUCCESS;
}

VTK系列目录：

1 VTK基本概念

2 VTK图像处理

3 VTK图形处理

4 VTK体绘制