DGtal 1.3.0
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Typedefs | Functions
examplePlaneProbingSurfaceLocalEstimator.cpp File Reference
#include <iostream>
#include <unordered_map>
#include "ConfigExamples.h"
#include "DGtal/helpers/StdDefs.h"
#include "DGtal/base/Common.h"
#include "DGtal/geometry/surfaces/estimation/PlaneProbingTetrahedronEstimator.h"
#include "DGtal/geometry/surfaces/estimation/PlaneProbingParallelepipedEstimator.h"
#include "DGtal/geometry/surfaces/DigitalSurfacePredicate.h"
#include "DGtal/geometry/surfaces/estimation/PlaneProbingDigitalSurfaceLocalEstimator.h"
#include "DGtal/helpers/Shortcuts.h"
#include "DGtal/helpers/ShortcutsGeometry.h"
#include "DGtal/io/viewers/Viewer3D.h"

Go to the source code of this file.

Typedefs

using KSpace = Z3i::KSpace
 
using SH3 = Shortcuts< KSpace >
 
using SHG3 = ShortcutsGeometry< KSpace >
 
using Surface = SH3::DigitalSurface
 
using Surfel = SH3::Surfel
 
using Point = SH3::Point
 
using RealPoint = SH3::RealPoint
 
using Integer = Point::Coordinate
 

Functions

RealPoint centerSurfel (KSpace const &K, SH3::SCell const &s)
 
int main (int argc, char **argv)
 

Detailed Description

This program is free software: you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program. If not, see http://www.gnu.org/licenses/.

Author
Jocelyn Meyron (jocel.nosp@m.yn.m.nosp@m.eyron.nosp@m.@lir.nosp@m.is.cn.nosp@m.rs.f.nosp@m.r ) Laboratoire d'InfoRmatique en Image et Systemes d'information - LIRIS (CNRS, UMR 5205), CNRS, France
Date
2020/12/07

An example file that shows how to construct and use a PlaneProbingDigitalSurfaceLocalEstimator.

This file is part of the DGtal library.

Definition in file examplePlaneProbingSurfaceLocalEstimator.cpp.

Typedef Documentation

◆ Integer

using Integer = Point::Coordinate

Definition at line 55 of file examplePlaneProbingSurfaceLocalEstimator.cpp.

◆ KSpace

Definition at line 48 of file examplePlaneProbingSurfaceLocalEstimator.cpp.

◆ Point

using Point = SH3::Point

Definition at line 53 of file examplePlaneProbingSurfaceLocalEstimator.cpp.

◆ RealPoint

Definition at line 54 of file examplePlaneProbingSurfaceLocalEstimator.cpp.

◆ SH3

using SH3 = Shortcuts<KSpace>

Definition at line 49 of file examplePlaneProbingSurfaceLocalEstimator.cpp.

◆ SHG3

Definition at line 50 of file examplePlaneProbingSurfaceLocalEstimator.cpp.

◆ Surface

Definition at line 51 of file examplePlaneProbingSurfaceLocalEstimator.cpp.

◆ Surfel

Definition at line 52 of file examplePlaneProbingSurfaceLocalEstimator.cpp.

Function Documentation

◆ centerSurfel()

RealPoint centerSurfel ( KSpace const &  K,
SH3::SCell const &  s 
)

Definition at line 57 of file examplePlaneProbingSurfaceLocalEstimator.cpp.

58{
59 auto pointels = SH3::getPrimalVertices(K, s, true);
60
61 Point p = K.uCoords(pointels[0]),
62 u = K.uCoords(pointels[1]) - p,
63 v = K.uCoords(pointels[3]) - p;
64
65 static const RealPoint shift(-0.5, -0.5, -0.5);
66
67 return p + 0.5 * u + 0.5 * v + shift;
68}
Point uCoords(const Cell &c) const
Return its digital coordinates.
Aim: Implements basic operations that will be used in Point and Vector classes.
Definition: PointVector.h:593
static CellRange getPrimalVertices(const KSpace &K, const SCell &s)
Definition: Shortcuts.h:3180
MyPointD Point
Definition: testClone2.cpp:383
KSpace K

References DGtal::Shortcuts< TKSpace >::getPrimalVertices(), K, and DGtal::KhalimskySpaceND< dim, TInteger >::uCoords().

Referenced by main().

◆ main()

int main ( int  argc,
char **  argv 
)

[PlaneProbingDigitalSurfaceLocalEstimatorConstruction]

[PlaneProbingDigitalSurfaceLocalEstimatorConstruction]

[PlaneProbingDigitalSurfaceLocalEstimatorUsage]

[PlaneProbingDigitalSurfaceLocalEstimatorUsage]

Definition at line 72 of file examplePlaneProbingSurfaceLocalEstimator.cpp.

73{
74 QApplication application(argc, argv);
75
76 std::string volfile = (argc > 1) ? argv[1] : (examplesPath + "samples/cat10.vol");
77
79 auto bimage = SH3::makeBinaryImage(volfile, params);
80 auto K = SH3::getKSpace(bimage, params);
81 auto surface = SH3::makeDigitalSurface(bimage, K, params);
82 auto surfels = SH3::getSurfelRange(surface);
83
84 Integer bound = params["maxAABB"].as<Integer>();
85 double gridstep = params["gridstep"].as<double>();
86
87 Viewer3D<> viewer(K);
88 viewer << SetMode3D(Surfel().className(), "Basic");
89 viewer.show();
90
92 using SurfacePredicate = DigitalSurfacePredicate<Surface>;
94 // The general form is PlaneProbingDigitalSurfaceLocalEstimator<SurfaceType, ProbingAlgorithm>
96
97 // Parameters of the estimator:
98 // - the probing factory
99 Estimator::ProbingFactory probingFactory = [&bound](const Estimator::ProbingFrame& frame, const SurfacePredicate& surfacePredicate) {
100 // If the base estimator is a PlaneProbingTetrahedronEstimator
101 // return new ProbingAlgorithm(frame.p, { frame.b1, frame.b2, frame.normal }, surfacePredicate);
102
103 // For a PlaneProbingParallelepipedEstimator
104 return new ProbingAlgorithm(frame.p, { frame.b1, frame.b2, frame.normal }, surfacePredicate, bound);
105 };
106
107 // - an optional hashmap of pre-estimations
108 std::unordered_map<Surfel, RealPoint> preEstimations;
109 // The user can provide the pre-estimation
110 // auto preEstimationsVector = SHG3::getCTrivialNormalVectors(surface, surfels, params);
111 // for (std::size_t i = 0; i < surfels.size(); ++i)
112 // {
113 // preEstimations[surfels[i]] = preEstimationsVector[i];
114 // }
115 // Or if it is not given, it is implicitly done inside the Estimator::eval function (using the MaximalSegmentSliceEstimation estimator)
116
117 // - a verbosity flag
118 bool verbose = true;
119
120 Estimator estimator(surface, probingFactory, preEstimations, verbose);
121 estimator.init(gridstep, surfels.begin(), surfels.end());
123
125 // Evaluation on a range of surfels
126 std::vector<Estimator::Quantity> quantities;
127 estimator.eval(surfels.begin(), surfels.end(), std::back_inserter(quantities));
128
129 // Or on one surfel 's'
130 // Estimator::Quantity q = estiamtor.eval(s);
132
133 Color fillColor = viewer.getFillColor();
134
135 int i = 0;
136 for (auto it = surfels.begin(); it != surfels.end(); ++it, ++i)
137 {
138 const Surfel& s = *it;
139 const Estimator::Quantity& n = quantities[i];
140
141 RealPoint origin = centerSurfel(K, s);
142
143 viewer.setFillColor(fillColor);
144 viewer << s;
145
146 // Pre-estimation in red
147 RealPoint const& preEstimation = estimator.getPreEstimation(it);
148 viewer.setLineColor(Color::Red);
149 viewer.addLine(origin, origin + 1.5 * preEstimation.getNormalized(), 0.3);
150
151 // Estimated normal in green;
152 viewer.setLineColor(Color::Green);
153 viewer.addLine(origin, origin + 1.5 * n.getNormalized(), 0.3);
154 }
155
156 viewer << Viewer3D<>::updateDisplay;
157 application.exec();
158
159 return 0;
160}
Structure representing an RGB triple with alpha component.
Definition: Color.h:68
static const Color Green
Definition: Color.h:417
static const Color Red
Definition: Color.h:416
Aim: A point predicate which tells whether a point belongs to the set of pointels of a given digital ...
Aim: Adapt a plane-probing estimator on a digital surface to estimate normal vectors.
PointVector< dim, double, std::array< double, dim > > getNormalized() const
static Parameters defaultParameters()
static KSpace getKSpace(const Point &low, const Point &up, Parameters params=parametersKSpace())
Definition: Shortcuts.h:332
static SurfelRange getSurfelRange(CountedPtr< ::DGtal::DigitalSurface< TDigitalSurfaceContainer > > surface, const Parameters &params=parametersDigitalSurface())
Definition: Shortcuts.h:1547
static CountedPtr< DigitalSurface > makeDigitalSurface(CountedPtr< TPointPredicate > bimage, const KSpace &K, const Parameters &params=parametersDigitalSurface())
Definition: Shortcuts.h:1209
static Parameters defaultParameters()
Definition: Shortcuts.h:203
static CountedPtr< BinaryImage > makeBinaryImage(Domain shapeDomain)
Definition: Shortcuts.h:561
RealPoint centerSurfel(KSpace const &K, SH3::SCell const &s)
Modifier class in a Display3D stream. Useful to choose your own mode for a given class....
Represents a signed cell in a cellular grid space by its Khalimsky coordinates and a boolean value.

References centerSurfel(), DGtal::Shortcuts< TKSpace >::defaultParameters(), DGtal::ShortcutsGeometry< TKSpace >::defaultParameters(), DGtal::Shortcuts< TKSpace >::getKSpace(), DGtal::PointVector< dim, TEuclideanRing, TContainer >::getNormalized(), DGtal::Shortcuts< TKSpace >::getSurfelRange(), DGtal::Color::Green, K, DGtal::Shortcuts< TKSpace >::makeBinaryImage(), DGtal::Shortcuts< TKSpace >::makeDigitalSurface(), and DGtal::Color::Red.