ITK  5.2.0
Insight Toolkit
Examples/SpatialObjects/VesselTubeSpatialObject.cxx
/*=========================================================================
*
* Copyright NumFOCUS
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0.txt
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*=========================================================================*/
// Software Guide : BeginLatex
//
// \index{itk::VesselTubeSpatialObject}
//
// \doxygen{VesselTubeSpatialObject} derives from \doxygen{TubeSpatialObject}.
// It represents a blood vessel segmented from an image.
// A VesselTubeSpatialObject is described as a list of centerline points which
// have a position, a radius, and normals.
//
// Let's start by including the appropriate header file.
//
// Software Guide : EndLatex
// Software Guide : BeginCodeSnippet
// Software Guide : EndCodeSnippet
int
main(int, char *[])
{
// Software Guide : BeginLatex
//
// VesselTubeSpatialObject is templated over the dimension of the space. A
// VesselTubeSpatialObject contains a list of VesselTubeSpatialObjectPoints.
//
// First we define some type definitions and we create the tube.
//
// Software Guide : EndLatex
unsigned int i;
// Software Guide : BeginCodeSnippet
using VesselTubeType = itk::TubeSpatialObject<3>;
using VesselTubePointType = VesselTubeType::TubePointType;
VesselTubeType::Pointer vesselTube = VesselTubeType::New();
// Software Guide : EndCodeSnippet
// Software Guide : BeginLatex
//
// We create a point list and we set:
// \begin{enumerate}
// \item The position of each point in the local coordinate system using the
// \code{SetPositionInObjectSpace()} method.
// \item The radius of the tube at this position using
// \code{SetRadiusInObjectSpace()}. \item The medialness value describing
// how the point lies in the middle of the vessel using
// \code{SetMedialness()}. \item The ridgeness value describing how the
// point lies on the ridge using \code{SetRidgeness()}. \item The branchness
// value describing if the point is a branch point using
// \code{SetBranchness()}. \item The three alpha values corresponding to the
// eigenvalues of the Hessian
// using \code{SetAlpha1()},\code{SetAlpha2()} and \code{SetAlpha3()}.
// \item The mark value using \code{SetMark()}.
// \item The color of the point is set to red in this example with an
// opacity of 1. \end{enumerate}
//
// Software Guide : EndLatex
// Software Guide : BeginCodeSnippet
VesselTubeType::TubePointListType list;
for (i = 0; i < 5; ++i)
{
VesselTubePointType p;
PointType pnt;
pnt[0] = i;
pnt[1] = i + 1;
pnt[2] = i + 2;
p.SetPositionInObjectSpace(pnt);
p.SetRadiusInObjectSpace(1);
p.SetAlpha1(i);
p.SetAlpha2(i + 1);
p.SetAlpha3(i + 2);
p.SetMedialness(i);
p.SetRidgeness(i);
p.SetBranchness(i);
p.SetColor(1, 0, 0, 1);
list.push_back(p);
}
// Software Guide : EndCodeSnippet
// Software Guide : BeginLatex
//
// Next, we create the tube and set its name using \code{SetName()}. We also
// set its identification number with \code{SetId()} and, at the end, we add
// the list of points previously created.
//
// Software Guide : EndLatex
// Software Guide : BeginCodeSnippet
vesselTube->GetProperty().SetName("VesselTube");
vesselTube->SetId(1);
vesselTube->SetPoints(list);
vesselTube->Update();
// Software Guide : EndCodeSnippet
// Software Guide : BeginLatex
//
// The \code{GetPoints()} method return a reference to the internal list of
// points of the object.
//
// Software Guide : EndLatex
// Software Guide : BeginCodeSnippet
VesselTubeType::TubePointListType pointList = vesselTube->GetPoints();
std::cout << "Number of points representing the blood vessel: ";
std::cout << pointList.size() << std::endl;
// Software Guide : EndCodeSnippet
// Software Guide : BeginLatex
//
// Then we can access the points using STL iterators.
// \code{GetPositionInObjectSpace()}
// and \code{GetColor()} functions return respectively the position and the
// color of the point.
//
// Software Guide : EndLatex
// Software Guide : BeginCodeSnippet
VesselTubeType::TubePointListType::const_iterator it =
vesselTube->GetPoints().begin();
i = 0;
while (it != vesselTube->GetPoints().end())
{
std::cout << std::endl;
std::cout << "Point #" << i << std::endl;
std::cout << "Position: " << (*it).GetPositionInObjectSpace()
<< std::endl;
std::cout << "Radius: " << (*it).GetRadiusInObjectSpace() << std::endl;
std::cout << "Medialness: " << (*it).GetMedialness() << std::endl;
std::cout << "Ridgeness: " << (*it).GetRidgeness() << std::endl;
std::cout << "Branchness: " << (*it).GetBranchness() << std::endl;
std::cout << "Alpha1: " << (*it).GetAlpha1() << std::endl;
std::cout << "Alpha2: " << (*it).GetAlpha2() << std::endl;
std::cout << "Alpha3: " << (*it).GetAlpha3() << std::endl;
std::cout << "Color = " << (*it).GetColor() << std::endl;
++it;
++i;
}
// Software Guide : EndCodeSnippet
return EXIT_SUCCESS;
}
itk::TubeSpatialObject
Representation of a tube based on the spatial object classes.
Definition: itkTubeSpatialObject.h:42
itk::GTest::TypedefsAndConstructors::Dimension2::PointType
ImageBaseType::PointType PointType
Definition: itkGTestTypedefsAndConstructors.h:51
itk::FixedArray::size
SizeType size() const
itkTubeSpatialObject.h