DGtal  1.3.beta
testShroudsRegularization.cpp
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1 
29 #include <iostream>
31 #include "DGtal/base/Common.h"
32 #include "ConfigTest.h"
33 #include "DGtalCatch.h"
34 #include "DGtal/helpers/StdDefs.h"
35 #include "DGtal/helpers/Shortcuts.h"
36 #include "DGtal/geometry/surfaces/ShroudsRegularization.h"
38 
39 using namespace std;
40 using namespace DGtal;
41 
43 // Functions for testing class ShroudsRegularization
45 
46 TEST_CASE( "Testing ShroudsRegularization" )
47 {
50  typedef SH3::ExplicitSurfaceContainer Container;
52 
53  auto params = SH3::defaultParameters();
54  params( "polynomial", "goursat" )( "gridstep", 1)("verbose", 0);
55  auto implicit_shape = SH3::makeImplicitShape3D ( params );
56  auto digitized_shape = SH3::makeDigitizedImplicitShape3D( implicit_shape, params );
57  auto K = SH3::getKSpace( params );
58  auto surface = SH3::makeDigitalSurface( digitized_shape, K, params );
60 
62  auto idxsurface = SH3::makeIdxDigitalSurface( surface, params );
63  ShroudsRegularization< Container > shrouds_reg( idxsurface );
64  auto originalPos = shrouds_reg.positions();
66  {
67  auto polySurf = SH3::makeDualPolygonalSurface( idxsurface );
68  SH3::saveOBJ( polySurf, "goursat-shrouds-init.obj" );
69  }
70 
72  double loo = 0.0;
73  double l2 = 0.0;
74  double energyInitK2 = shrouds_reg.energy ( RegType::SQUARED_CURVATURE );
75  std::tie( loo, l2 ) = shrouds_reg.regularize( RegType::SQUARED_CURVATURE,
76  0.5, 0.0001, 100 );
77  double energyRegK2 = shrouds_reg.energy ( RegType::SQUARED_CURVATURE );
79 
80  REQUIRE( loo < 0.1 );
81  REQUIRE( l2 <= loo );
82  REQUIRE( energyRegK2 < energyInitK2 );
83 
84  {
86  auto regularizedPos = shrouds_reg.positions();
87  auto polySurf = SH3::makeDualPolygonalSurface( idxsurface );
88  auto polySurfPos = polySurf->positions();
89  for ( auto i = 0; i < regularizedPos.size(); i++ )
90  polySurfPos[ i ] = regularizedPos[ i ];
91  SH3::saveOBJ( polySurf, "goursat-shrouds-reg-k2.obj" );
93  }
94 
96  shrouds_reg.init();
97  double energyInitArea= shrouds_reg.energy ( RegType::AREA );
98  std::tie( loo, l2 ) = shrouds_reg.regularize( RegType::AREA,
99  0.5, 0.0001, 100 );
100  double energyRegArea = shrouds_reg.energy ( RegType::AREA );
102 
103  REQUIRE( energyRegArea < energyInitArea );
104 
106  shrouds_reg.init();
107  double energyInitSnk= shrouds_reg.energy ( RegType::SNAKE );
108  std::tie( loo, l2 ) = shrouds_reg.regularize( RegType::SNAKE,
109  0.5, 0.0001, 100 );
110  double energyRegSnk = shrouds_reg.energy ( RegType::SNAKE );
112 
113  REQUIRE( energyRegSnk < energyInitSnk );
114 }
SH3
Shortcuts< KSpace > SH3
Definition: testArithmeticalDSSComputerOnSurfels.cpp:49
K
KSpace K
Definition: testCubicalComplex.cpp:62
DGtal::Shortcuts::makeDigitalSurface
static CountedPtr< DigitalSurface > makeDigitalSurface(CountedPtr< TPointPredicate > bimage, const KSpace &K, const Parameters &params=parametersDigitalSurface())
Definition: Shortcuts.h:1209
REQUIRE
REQUIRE(domain.isInside(aPoint))
DGtal::Shortcuts
Aim: This class is used to simplify shape and surface creation. With it, you can create new shapes an...
Definition: Shortcuts.h:104
DGtal::ShroudsRegularization::regularize
std::pair< double, double > regularize(const Regularization reg=Regularization::SQUARED_CURVATURE, const double randomization=0.0, const double max_loo=0.0001, const int maxNb=100)
Definition: ShroudsRegularization.h:304
DGtal::ShroudsRegularization::energy
double energy(const Regularization reg=Regularization::SQUARED_CURVATURE)
Definition: ShroudsRegularization.h:335
DGtal::Shortcuts::defaultParameters
static Parameters defaultParameters()
Definition: Shortcuts.h:203
DGtal::Shortcuts::makeImplicitShape3D
static CountedPtr< ImplicitShape3D > makeImplicitShape3D(const Parameters &params=parametersImplicitShape3D())
Definition: Shortcuts.h:282
DGtal
DGtal is the top-level namespace which contains all DGtal functions and types.
DGtal::ShroudsRegularization::init
void init()
Definition: ShroudsRegularization.h:128
DGtal::Shortcuts::makeIdxDigitalSurface
static CountedPtr< IdxDigitalSurface > makeIdxDigitalSurface(CountedPtr< BinaryImage > bimage, const KSpace &K, const Parameters &params=parametersDigitalSurface())
Definition: Shortcuts.h:1275
DGtal::ShroudsRegularization
Aim: Implements the Shrouds Regularization algorithm of Nielson et al .
Definition: ShroudsRegularization.h:73
TEST_CASE
TEST_CASE("Testing ShroudsRegularization")
Definition: testShroudsRegularization.cpp:46
DGtal::Shortcuts::makeDigitizedImplicitShape3D
static CountedPtr< DigitizedImplicitShape3D > makeDigitizedImplicitShape3D(CountedPtr< ImplicitShape3D > shape, Parameters params=parametersDigitizedImplicitShape3D())
Definition: Shortcuts.h:523
DGtal::ShroudsRegularization::positions
RealPoints positions() const
Definition: ShroudsRegularization.h:196
DGtal::Shortcuts::getKSpace
static KSpace getKSpace(const Point &low, const Point &up, Parameters params=parametersKSpace())
Definition: Shortcuts.h:332
DGtal::SetOfSurfels
Aim: A model of CDigitalSurfaceContainer which defines the digital surface as connected surfels....
Definition: SetOfSurfels.h:73
DGtal::ShroudsRegularization::Regularization
Regularization
The enum class specifying the possible shrouds regularization.
Definition: ShroudsRegularization.h:96
DGtal::Shortcuts::saveOBJ
static bool saveOBJ(CountedPtr< ::DGtal::DigitalSurface< TDigitalSurfaceContainer > > digsurf, const TCellEmbedder &embedder, const RealVectors &normals, const Colors &diffuse_colors, std::string objfile, const Color &ambient_color=Color(32, 32, 32), const Color &diffuse_color=Color(200, 200, 255), const Color &specular_color=Color::White)
Definition: Shortcuts.h:1739
DGtal::Shortcuts::makeDualPolygonalSurface
static CountedPtr< PolygonalSurface > makeDualPolygonalSurface(Surfel2Index &s2i, CountedPtr< ::DGtal::DigitalSurface< TContainer > > aSurface)
Definition: Shortcuts.h:2268