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DGtal 2.0.0
io/viewers/viewer3D-8-2DSliceImages.cpp
Illustration of the 2D image slice visualization.
#include <iostream>
#include "DGtal/io/readers/VolReader.h"
#include "DGtal/base/Common.h"
#include "DGtal/images/ImageHelper.h"
#include "DGtal/images/ImageContainerBySTLVector.h"
#include "DGtal/kernel/BasicPointFunctors.h"
#include "ConfigExamples.h"
#include "DGtal/io/viewers/PolyscopeViewer.h"
#include "DGtal/io/Color.h"
using namespace std;
using namespace DGtal;
int main( int argc, char** argv )
{
PolyscopeViewer viewer;
std::string inputFilename = examplesPath + "samples/lobster.vol";
Image3D imageVol = VolReader<Image3D>::importVol(inputFilename);
// Extracting the 2D images from the 3D one and from a given dimension.
// First image the teenth Z slice (dim=2)
Image3D::Value, DGtal::functors::Identity > MySliceImageAdapter;
// Define the functor to recover a 2D domain from the 3D one in the Z direction (2):
DGtal::functors::Projector<DGtal::Z2i::Space> transTo2DdomainFunctorZ; transTo2DdomainFunctorZ.initRemoveOneDim(2);
DGtal::Z2i::Domain domain2DZ(transTo2DdomainFunctorZ(imageVol.domain().lowerBound()),
transTo2DdomainFunctorZ(imageVol.domain().upperBound()));
// Define the functor to associate 2D coordinates to the 3D one by giving the direction Z (2) and the slide numnber (10):
DGtal::functors::Projector<DGtal::Z3i::Space> aSliceFunctorZ(10); aSliceFunctorZ.initAddOneDim(2);
// We can now obtain the slice image (a ConstImageAdapter):
const auto identityFunctor = DGtal::functors::Identity();
MySliceImageAdapter aSliceImageZ(imageVol, domain2DZ, aSliceFunctorZ, identityFunctor );
// Second image the fiftieth Y slice (dim=1)
// Define the functor to recover a 2D domain from the 3D one in the Y direction (1):
DGtal::functors::Projector<DGtal::Z2i::Space> transTo2DdomainFunctorY; transTo2DdomainFunctorY.initRemoveOneDim(1);
DGtal::Z2i::Domain domain2DY(transTo2DdomainFunctorY(imageVol.domain().lowerBound()),
transTo2DdomainFunctorY(imageVol.domain().upperBound()));
// Define the functor to associate 2D coordinates to the 3D one by giving the direction Y (1) and the slide numnber (50):
DGtal::functors::Projector<DGtal::Z3i::Space> aSliceFunctorY(50); aSliceFunctorY.initAddOneDim(1);
// We can now obtain the slice image (a ConstImageAdapter):
MySliceImageAdapter aSliceImageY(imageVol, domain2DY, aSliceFunctorY, identityFunctor );
viewer.draw(aSliceImageZ);
std::string imageY = viewer.draw(aSliceImageY);
//
// Update image position by accessing the transform
viewer.data[imageY].transform.rotate(Eigen::AngleAxisd(M_PI / 2, Eigen::Vector3d::UnitX()));
viewer.data[imageY].transform.translate(Eigen::Vector3d(0, 50, -50));
// //! [ExampleViewer3D2DModifImages]
viewer.show();
return 0;
}
// //
Aim: implements a const image adapter with a given domain (i.e. a subdomain) and 2 functors : g for d...
std::string draw(const Point &p, const std::string &uname="Point_{i}")
std::map< std::string, DisplayData< RealPoint > > data
Definition Display3D.h:734
void show() override
Starts the event loop and display of elements.
HyperRectDomain< Space > Domain
Definition StdDefs.h:99
DGtal is the top-level namespace which contains all DGtal functions and types.
STL namespace.
static ImageContainer importVol(const std::string &filename, const Functor &aFunctor=Functor())
Aim: Define a simple default functor that just returns its argument.
Aim: Functor that maps a point P of dimension i to a point Q of dimension j. The member myDims is an ...
void initAddOneDim(const Dimension &newDim)
void initRemoveOneDim(const Dimension &dimRemoved)
int main()
Definition testBits.cpp:56