DGtal  1.2.0
io/viewers/viewer3D-8bis-2Dimages.cpp

Example of 2D image display in 3D by 3D embedding.

Illustration of multiple 2D image extraction and visualisation from 3D embedding
#include <iostream>
#include "DGtal/base/Common.h"
#include "DGtal/io/readers/VolReader.h"
#include "DGtal/images/ImageHelper.h"
#include "ConfigExamples.h"
#include "DGtal/io/viewers/Viewer3D.h"
#include "DGtal/kernel/BasicPointFunctors.h"
using namespace std;
using namespace DGtal;
int main( int argc, char** argv )
{
Image3D::Value, DGtal::functors::Identity > ImageAdapterExtractor;
QApplication application(argc,argv);
typedef Viewer3D<> MyViewer;
MyViewer viewer;
viewer.show();
std::string inputFilename = examplesPath + "samples/lobster.vol";
Image3D imageVol = VolReader<Image3D>::importVol(inputFilename);
DGtal::Z3i::Point ptCenter(50, 62, 28);
const int IMAGE_PATCH_WIDTH = 20;
// Setting the image domain of the resulting image to be displayed in 3D:
unsigned int pos=0;
for (double alpha = 0; alpha< 1.54; alpha+= 0.01){
// Extracting images from 3D embeder
ptCenter+DGtal::Z3i::Point(static_cast<int>(200.0*cos(alpha)),static_cast<int>(100.0*sin(alpha))),
DGtal::Z3i::RealPoint(cos(alpha),sin(alpha),cos(2.0*alpha)),
ImageAdapterExtractor extractedImage(imageVol, domainImage2D, embedder, idV);
//Display image and update its position with embeder
viewer << extractedImage;
viewer << DGtal::UpdateImage3DEmbedding<Z3i::Space, Z3i::KSpace>(pos,
embedder(Z2i::RealPoint(0,0)),
embedder(domainImage2D.upperBound()),
pos++;
}
viewer << MyViewer::updateDisplay;
return application.exec();
}
// //
Aim: implements a const image adapter with a given domain (i.e. a subdomain) and 2 functors : g for d...
const Point & upperBound() const
Aim: Functor that embeds a 2D point into a 3D space from two axis vectors and an origin point given i...
const int IMAGE_PATCH_WIDTH
DGtal is the top-level namespace which contains all DGtal functions and types.
Aim: Define a simple default functor that just returns its argument.
int main(int argc, char **argv)
Z2i::RealPoint RealPoint