JPEGReader
VTKExamples/Cxx/IO/JPEGReader
Description¶
This example shows how to read a JPG image file.
Code¶
JPEGReader.cxx
#include <vtkSmartPointer.h> #include <vtkImageViewer2.h> #include <vtkJPEGReader.h> #include <vtkRenderWindow.h> #include <vtkRenderWindowInteractor.h> #include <vtkRenderer.h> int main(int argc, char* argv[]) { //Verify input arguments if ( argc != 2 ) { std::cout << "Usage: " << argv[0] << " Filename(.jpeg)" << std::endl; return EXIT_FAILURE; } //Read the image vtkSmartPointer<vtkJPEGReader> jpegReader = vtkSmartPointer<vtkJPEGReader>::New(); jpegReader->SetFileName ( argv[1] ); // 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(); renderWindowInteractor->Start(); return EXIT_SUCCESS; }
CMakeLists.txt¶
cmake_minimum_required(VERSION 2.8) PROJECT(JPEGReader) find_package(VTK REQUIRED) include(${VTK_USE_FILE}) add_executable(JPEGReader MACOSX_BUNDLE JPEGReader.cxx) target_link_libraries(JPEGReader ${VTK_LIBRARIES})
Download and Build JPEGReader¶
Danger
The generation of tar files has not been ported to the new VTKExamples. Some tarballs may be missing or out-of-date.
Click here to download JPEGReader and its CMakeLists.txt file. Once the tarball JPEGReader.tar has been downloaded and extracted,
cd JPEGReader/build
If VTK is installed:
cmake ..
If VTK is not installed but compiled on your system, you will need to specify the path to your VTK build:
cmake -DVTK_DIR:PATH=/home/me/vtk_build ..
Build the project:
make
and run it:
./JPEGReader
WINDOWS USERS PLEASE NOTE: Be sure to add the VTK bin directory to your path. This will resolve the VTK dll's at run time.