Simple Example Using OpenCV By CPP And Python

The article introduces how to display an image by OpenCV in CPlusPlus and Python language. The user can exit the whole program when he presses the ESC key. CPP CMakeLists.txt macro(use_cxx11) if (CMAKE_VERSION VERSION_LESS “3.1”) if (CMAKE_CXX_COMPILER_ID STREQUAL “GNU”) set (CMAKE_CXX_FLAGS “${CMAKE_CXX_FLAGS} -std=gnu++11”) endif () else () set (CMAKE_CXX_STANDARD 11) Read more…

VTK – Import And Export 3D Model

The instance of vtkImporter contains vtkRenderWindow and vtkRenderer objects. It supports to recover original scene including lights, cameras, actors, etc. Here is a simple example which imports 3D studio file and shows the whole scene. import vtk DataRoot = “/Users/weiyang/Downloads/VTKData” importer = vtk.vtk3DSImporter() importer.ComputeNormalsOn() importer.SetFileName( DataRoot + “/Data/iflamigm.3ds” ) importer.Read() Read more…

VTK – Area Layouts Of Graph Visualizations

There are three examples using views displaying relations of vtk classes. The article learned from VTKUsersGuide vtkTreeRingView Python #!/usr/bin/env python from vtk import * def main(): datapath = “/Users/weiyang/Downloads/VTKData” #vtk.util.misc.vtkGetDataRoot() reader1 = vtkXMLTreeReader() reader1.SetFileName(datapath + “/Data/Infovis/XML/vtkclasses.xml”) reader1.SetEdgePedigreeIdArrayName(“tree edge”) reader1.GenerateVertexPedigreeIdsOff(); reader1.SetVertexPedigreeIdArrayName(“id”); reader2 = vtkXMLTreeReader() reader2.SetFileName(datapath + “/Data/Infovis/XML/vtklibrary.xml”) reader2.SetEdgePedigreeIdArrayName(“graph edge”) reader2.GenerateVertexPedigreeIdsOff(); reader2.SetVertexPedigreeIdArrayName(“id”); Read more…

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