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#include <opencv2/sfm.hpp>
#include <opencv2/viz.hpp>
#include <iostream>
using namespace std;
using namespace cv;
using namespace cv::sfm;
static void help() {
cout
<< "\n---------------------------------------------------------------------------\n"
<< " This program shows how to import a reconstructed scene in the \n"
<< " OpenCV Structure From Motion (SFM) module.\n"
<< " Usage:\n"
<< " example_sfm_import_reconstruction <path_to_file>\n"
<< " where: file_path is the absolute path file into your system which contains\n"
<< " the reconstructed scene. \n"
<< "---------------------------------------------------------------------------\n\n"
<< endl;
}
int main(int argc, char* argv[])
{
/// Read input parameters
if ( argc != 2 ) {
help();
exit(0);
}
/// Immport a reconstructed scene
vector<Mat> Rs, Ts, Ks, points3d;
importReconstruction(argv[1], Rs, Ts, Ks, points3d, SFM_IO_BUNDLER);
/// Create 3D windows
viz::Viz3d window("Coordinate Frame");
window.setWindowSize(Size(500,500));
window.setWindowPosition(Point(150,150));
window.setBackgroundColor(); // black by default
/// Create the pointcloud
vector<Vec3d> point_cloud;
for (int i = 0; i < points3d.size(); ++i){
point_cloud.push_back(Vec3f(points3d[i]));
}
/// Recovering cameras
vector<Affine3d> path;
for (size_t i = 0; i < Rs.size(); ++i)
path.push_back(Affine3d(Rs[i], Ts[i]));
/// Create and show widgets
viz::WCloud cloud_widget(point_cloud, viz::Color::green());
viz::WTrajectory trajectory(path, viz::WTrajectory::FRAMES, 0.5);
viz::WTrajectoryFrustums frustums(path, Vec2f(0.889484, 0.523599), 0.5,
viz::Color::yellow());
window.showWidget("point_cloud", cloud_widget);
window.showWidget("cameras", trajectory);
window.showWidget("frustums", frustums);
/// Wait for key 'q' to close the window
cout << endl << "Press 'q' to close each windows ... " << endl;
window.spin();
return 0;
}
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