PNG, BMP, JPG image reading and display
Read and display.jpg images: vtkJPEGReader
VS15+VTK7.0 Console instance:

#include <vtkAutoInit.h>
VTK_MODULE_INIT(vtkRenderingOpenGL2);
VTK_MODULE_INIT(vtkInteractionStyle);
VTK_MODULE_INIT(vtkRenderingFreeType);
VTK_MODULE_INIT(vtkRenderingVolumeOpenGL2);
#include <vtkSmartPointer.h>
#include <vtkImageViewer2.h>
#include <vtkJPEGReader.h>
#include <vtkRenderWindow.h>
#include <vtkRenderWindowInteractor.h>
#include <vtkRenderer.h>

int main()
{
	//Verify input arguments
	/*	
	  Filename(.jpeg)" 
	*/

	//Read the image
	vtkSmartPointer<vtkJPEGReader> jpegReader =vtkSmartPointer<vtkJPEGReader>::New();
	jpegReader->SetFileName("F:\\vtkshuju\\lena.jpg");

	// Visualize
	vtkSmartPointer<vtkImageViewer2> imageViewer = vtkSmartPointer<vtkImageViewer2>::New();
	imageViewer->SetInputConnection(jpegReader->GetOutputPort());
	vtkSmartPointer<vtkRenderWindowInteractor> renderWindowInteractor =vtkSmartPointer<vtkRenderWindowInteractor>::New();
	imageViewer->SetupInteractor(renderWindowInteractor);
	imageViewer->Render();
	imageViewer->GetRenderer()->ResetCamera();
	imageViewer->Render();
	imageViewer->GetRenderWindow()->SetWindowName("read and show jpg test");

	renderWindowInteractor->Start();

	return EXIT_SUCCESS;
}

Console instance under VS15+VTK7.0:

#include <vtkAutoInit.h>
VTK_MODULE_INIT(vtkRenderingOpenGL2);
VTK_MODULE_INIT(vtkInteractionStyle);
VTK_MODULE_INIT(vtkRenderingFreeType);
VTK_MODULE_INIT(vtkRenderingVolumeOpenGL2);
//read and show .mha
#include <vtkImageData.h>
#include <vtkMetaImageReader.h>
#include <vtkSmartPointer.h>
#include <vtkInteractorStyleImage.h>
#include <vtkRenderer.h>
#include <vtkImageActor.h>
#include <vtkImageMapper3D.h>
#include <vtkRenderWindow.h>
#include <vtkRenderWindowInteractor.h>

int main()
{

//	 image.mha

	vtkSmartPointer<vtkMetaImageReader> reader =
		vtkSmartPointer<vtkMetaImageReader>::New();
	reader->SetFileName("F:\\vtkshuju\\itkBrainSliceComplex.mha");
	reader->Update();

	// Visualize
	vtkSmartPointer<vtkImageActor> actor =
		vtkSmartPointer<vtkImageActor>::New();
	actor->GetMapper()->SetInputConnection(reader->GetOutputPort());

	vtkSmartPointer<vtkRenderer> renderer =
		vtkSmartPointer<vtkRenderer>::New();
	renderer->AddActor(actor);
	renderer->ResetCamera();

	vtkSmartPointer<vtkRenderWindow> renderWindow =
		vtkSmartPointer<vtkRenderWindow>::New();
	renderWindow->AddRenderer(renderer);

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

	renderWindowInteractor->SetInteractorStyle(style);

	renderWindowInteractor->SetRenderWindow(renderWindow);
	renderWindowInteractor->Initialize();
	renderWindowInteractor->GetRenderWindow()->SetWindowName(".mha pic test");
	renderWindowInteractor->Start();

	return EXIT_SUCCESS;
}

PNG image read and display: vtkPNGReader:

Console instance under VS15+VTK7.0:

#include <vtkAutoInit.h>
VTK_MODULE_INIT(vtkRenderingOpenGL2);
VTK_MODULE_INIT(vtkInteractionStyle);
VTK_MODULE_INIT(vtkRenderingFreeType);
VTK_MODULE_INIT(vtkRenderingVolumeOpenGL2);
//read and show png
#include <vtkSmartPointer.h>
#include <vtkImageViewer2.h>
#include <vtkPNGReader.h>
#include <vtkRenderWindow.h>
#include <vtkRenderWindowInteractor.h>
#include <vtkRenderer.h>

int main()
{
	// Verify input arguments
	
//			<< " Filename(.png)" << std::endl;
	
	// Read the image
	vtkSmartPointer<vtkPNGReader> reader =
		vtkSmartPointer<vtkPNGReader>::New();
	reader->SetFileName("F:\\vtkshuju\\BrainProtonDensitySlice.png");

	// Visualize
	vtkSmartPointer<vtkImageViewer2> imageViewer =
		vtkSmartPointer<vtkImageViewer2>::New();
	imageViewer->SetInputConnection(reader->GetOutputPort());
	vtkSmartPointer<vtkRenderWindowInteractor> renderWindowInteractor =
		vtkSmartPointer<vtkRenderWindowInteractor>::New();
	imageViewer->SetupInteractor(renderWindowInteractor);
	imageViewer->Render();
	imageViewer->GetRenderer()->ResetCamera();
	imageViewer->Render();
	imageViewer->GetRenderWindow()->SetWindowName("read and show png test");
	renderWindowInteractor->Start();

	return EXIT_SUCCESS;
}

Console instance under VS15+VTK7.0:

#include <vtkAutoInit.h>
VTK_MODULE_INIT(vtkRenderingOpenGL2);
VTK_MODULE_INIT(vtkInteractionStyle);
VTK_MODULE_INIT(vtkRenderingFreeType);
VTK_MODULE_INIT(vtkRenderingVolumeOpenGL2);
#include <vtkSmartPointer.h>
#include <vtkImageViewer2.h>
#include <vtkBMPReader.h>
#include <vtkRenderWindow.h>
#include <vtkRenderWindowInteractor.h>
#include <vtkRenderer.h>

int main(int argc, char* argv[])
{
	//Verify input arguments
	
//			<< " Filename(.bmp)" << std::endl;
	

	//Read the image
	vtkSmartPointer<vtkBMPReader> reader =
		vtkSmartPointer<vtkBMPReader>::New();
	reader->SetFileName("F:\\vtkshuju\\masonry.bmp");

	// Visualize
	vtkSmartPointer<vtkImageViewer2> imageViewer =
		vtkSmartPointer<vtkImageViewer2>::New();
	imageViewer->SetInputConnection(reader->GetOutputPort());
	vtkSmartPointer<vtkRenderWindowInteractor> renderWindowInteractor =
		vtkSmartPointer<vtkRenderWindowInteractor>::New();
	imageViewer->SetupInteractor(renderWindowInteractor);
	imageViewer->Render();
	imageViewer->GetRenderer()->ResetCamera();
	imageViewer->Render();
	imageViewer->GetRenderWindow()->SetWindowName("read and show bmp test");
	renderWindowInteractor->Start();

	return EXIT_SUCCESS;
}