VTK读写数据

png格式图片转jpg

#include <vtkAutoInit.h>
VTK_MODULE_INIT(vtkRenderingOpenGL2)
VTK_MODULE_INIT(vtkInteractionStyle)

#include <vtkSmartPointer.h>
#include <vtkPNGReader.h>
#include <vtkJPEGWriter.h>
#include <vtkImageViewer2.h>
#include <vtkRenderWindowInteractor.h>
#include <vtkInteractorStyleImage.h>
#include <vtkRenderer.h>
#include <vtkRenderWindow.h>

//测试文件：data/VTK-logo.png
int main(int argc, char* argv[])
{
	char * fileName = (char*)"D:/VTKCODE/testvtk01/1.png";
	//读取PNG图像
	vtkSmartPointer<vtkPNGReader> reader = vtkSmartPointer<vtkPNGReader>::New();
	reader->SetFileName(fileName);

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

	//显示读取的单幅PNG图像
	vtkSmartPointer<vtkImageViewer2> imageViewer = vtkSmartPointer<vtkImageViewer2>::New();
	imageViewer->SetInputConnection(reader->GetOutputPort());

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

	imageViewer->SetupInteractor(renderWindowInteractor);
	imageViewer->Render();
	imageViewer->GetRenderer()->ResetCamera();
	imageViewer->Render();

	imageViewer->SetSize(640, 480);
	imageViewer->GetRenderWindow()->SetWindowName("ReadWriteSingleImage");

	//保存成JPG图像
	vtkSmartPointer<vtkJPEGWriter> writer = vtkSmartPointer<vtkJPEGWriter>::New();
	writer->SetFileName("VTK-logo.jpg");
	writer->SetInputConnection(reader->GetOutputPort());
	writer->Write();

	renderWindowInteractor->Start();

	return EXIT_SUCCESS;
}

显示序列化图片：

#include <vtkAutoInit.h>    
VTK_MODULE_INIT(vtkRenderingOpenGL2);

#include <stdio.h>
#include <vtkSmartPointer.h>
#include <vtkStringArray.h>
#include <vtkJPEGReader.h>
#include <vtkImageViewer2.h>
#include <vtkRenderWindowInteractor.h>
#include <vtkRenderer.h>

using namespace std;

int main()
{
	//生成文件序列组名
	vtkSmartPointer <vtkStringArray> fileArray =
		vtkSmartPointer <vtkStringArray>::New();
	char fileName[128];
	for (int i = 1; i < 100; i++)
	{
		sprintf_s(fileName, "D:/VTKCODE/testvtk01/Head/head%03d.jpg", i);
		string fileStr(fileName);
		fileArray->InsertNextValue(fileStr);
	}
	//读取JPG序列图像
	vtkSmartPointer <vtkJPEGReader> reader =
		vtkSmartPointer <vtkJPEGReader>::New();
	reader->SetFileNames(fileArray);

	//显示
	vtkSmartPointer<vtkImageViewer2> viewer =
		vtkSmartPointer<vtkImageViewer2>::New();
	viewer->SetInputConnection(reader->GetOutputPort());
	vtkSmartPointer<vtkRenderWindowInteractor> interact =
		vtkSmartPointer<vtkRenderWindowInteractor>::New();
	//默认选择第50张切片
	viewer->SetSlice(50);
	//viewer->SetSliceOrientationToXY();
	viewer->SetSliceOrientationToXZ();
	//viewer->SetSliceOrientationToYZ();
	viewer->SetupInteractor(interact);
	viewer->Render();

	interact->Start();
	return 0;
}