DGtal  1.0.0
ctopo-fillContours.cpp
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1 
41 #include <iostream>
43 #include "ConfigExamples.h"
44 #include "DGtal/helpers/StdDefs.h"
45 #include "DGtal/base/Common.h"
46 #include "DGtal/topology/helpers/Surfaces.h"
47 #include "DGtal/topology/SurfelSetPredicate.h"
48 #include "DGtal/geometry/curves/FreemanChain.h"
49 #include "DGtal/io/boards/Board2D.h"
50 
51 
53 
54 using namespace std;
55 using namespace DGtal;
56 
58 
59 int main( int /*argc*/, char** /*argv*/ )
60 {
61  trace.beginBlock ( "Example ctopo-fillContours" );
63  K.init(Z2i::Point(0, 10), Z2i::Point(20, 30), false);
64 
65  // We choose a direct and indirect oriented contour.
67  FreemanChain<int> fc1 ("001001001001001111101111011222222223222222322233333330301033333003", 6, 14);
68  FreemanChain<int> fc2 ("1111000033332222", 6, 20);
70 
71  Board2D aBoard;
72  Board2D aBoard2;
73  aBoard << K.lowerBound() << K.upperBound() ;
74  aBoard2 << K.lowerBound() << K.upperBound() ;
75 
76  //From the FreemanChain we can get a vector of SCell wrapped in a SurfelSetPredicate with sign defined from the FreemanChain orientation:
78 
80  std::set<DGtal::KhalimskySpaceND< 2, int >::SCell> boundarySCell;
81  FreemanChain<int>::getInterPixelLinels(K, fc1, boundarySCell, false);
83 
84  aBoard << CustomStyle((*boundarySCell.begin()).className(), new CustomColors(DGtal::Color::Red, DGtal::Color::Red) );
85  for( std::set<DGtal::KhalimskySpaceND< 2, int >::SCell>::const_iterator it= boundarySCell.begin();
86  it!= boundarySCell.end(); it++){
87  aBoard << *it;
88  }
89 
90  // We can also add other freeman chains with indirect orientation to construct a hole in interior of the shape:
92  std::set<DGtal::KhalimskySpaceND< 2, int >::SCell> boundarySCellhole;
93  FreemanChain<int>::getInterPixelLinels(K, fc2, boundarySCellhole, false);
95 
96 
97  aBoard << CustomStyle((*boundarySCell.begin()).className(), new CustomColors(DGtal::Color::Blue, DGtal::Color::Blue) );
98  aBoard2 << CustomStyle((*boundarySCell.begin()).className(), new CustomColors(DGtal::Color::Blue, DGtal::Color::Blue) );
99 
100 
101 
102  for( std::set<DGtal::KhalimskySpaceND< 2, int >::SCell>::const_iterator it= boundarySCellhole.begin(); it!= boundarySCellhole.end(); it++){
103  aBoard << *it;
104  aBoard2 << *it;
105  boundarySCell.insert(*it);
106  }
107 
108 
109  // Now we can compute the unsigned cell associated to interior pixels:
110 
112  typedef ImageContainerBySTLMap< Z2i::Domain, bool> BoolImage2D;
113  BoolImage2D::Domain imageDomain( Z2i::Point(0,10), Z2i::Point(20,30) );
114  BoolImage2D interiorCellImage( imageDomain );
115  Surfaces<DGtal::KhalimskySpaceND< 2, int > >::uFillInterior(K, functors::SurfelSetPredicate<std::set<SCell>,SCell>(boundarySCell),
116  interiorCellImage, 1, false);
118 
119  aBoard << CustomStyle(K.lowerCell().className(), new CustomColors(DGtal::Color::None, Color(200, 200, 200)) );
120  for(BoolImage2D::Domain::ConstIterator it = interiorCellImage.domain().begin();
121  it!=interiorCellImage.domain().end(); it++){
122  if(interiorCellImage(*it)){
123  aBoard << K.uSpel(*it);
124  }
125  }
126 
127 
128  // We can also compute the unsigned cell associated to interior and exterior pixels:
130  BoolImage2D interiorCellHoleImage( imageDomain );
131  BoolImage2D exteriorCellHoleImage( imageDomain );
132 
133 
134  Surfaces<DGtal::KhalimskySpaceND< 2, int > >::uFillInterior(K, functors::SurfelSetPredicate<std::set<SCell>, SCell>(boundarySCellhole),
135  interiorCellHoleImage, 1, true);
136  Surfaces<DGtal::KhalimskySpaceND< 2, int > >::uFillExterior(K, functors::SurfelSetPredicate<std::set<SCell>, SCell>(boundarySCellhole),
137  exteriorCellHoleImage, 1, false);
139 
140  aBoard2 << CustomStyle(K.lowerCell().className(),
141  new CustomColors(DGtal::Color::None, Color(200, 200, 200)) );
142  for(BoolImage2D::Domain::ConstIterator it = interiorCellHoleImage.domain().begin();
143  it!=interiorCellHoleImage.domain().end(); it++){
144  if(interiorCellHoleImage(*it)){
145  aBoard2 << K.uSpel(*it);
146  }
147  }
148  aBoard2 << CustomStyle(K.lowerCell().className(),
149  new CustomColors(DGtal::Color::None, Color(100, 100, 100)) );
150  for(BoolImage2D::Domain::ConstIterator it = exteriorCellHoleImage.domain().begin();
151  it!=exteriorCellHoleImage.domain().end(); it++){
152  if(exteriorCellHoleImage(*it)){
153  aBoard2 << K.uSpel(*it);
154  }
155  }
156 
157  aBoard.saveEPS("example_ctopo-fillContours.eps");
158  aBoard.saveFIG("example_ctopo-fillContours.fig");
159 
160  aBoard2.saveEPS("example_ctopo-fillContours2.eps");
161  aBoard2.saveFIG("example_ctopo-fillContours2.fig");
162  trace.endBlock();
163  return 0;
164 }
165 // //
void beginBlock(const std::string &keyword="")
HyperRectDomain< Space > Domain
MyDigitalSurface::ConstIterator ConstIterator
Trace trace
Definition: Common.h:144
const Point & upperBound() const
Return the upper bound for digital points in this space.
Aim: A utility class for constructing surfaces (i.e. set of (n-1)-cells).
Definition: Surfaces.h:78
double endBlock()
const Cell & lowerCell() const
Return the lower bound for cells in this space.
Custom style class redefining the pen color and the fill color. You may use Board2D::Color::None for ...
Definition: Board2D.h:278
static const Color None
Definition: Color.h:387
static const Color Blue
Definition: Color.h:394
Cell uSpel(Point p) const
From the digital coordinates of a point in Zn, builds the corresponding spel (cell of maximal dimensi...
bool init(const Point &lower, const Point &upper, bool isClosed)
Specifies the upper and lower bounds for the maximal cells in this space.
int main(int, char **)
void saveEPS(const char *filename, PageSize size=Board::BoundingBox, double margin=10.0) const
Definition: Board.cpp:805
const Point & lowerBound() const
Return the lower bound for digital points in this space.
DGtal is the top-level namespace which contains all DGtal functions and types.
Represents a signed cell in a cellular grid space by its Khalimsky coordinates and a boolean value.
Structure representing an RGB triple with alpha component.
Definition: Color.h:66
Aim: The predicate returning true iff the point is in the domain given at construction.
KSpace K
static const Color Red
Definition: Color.h:391
Aim: This class is a model of CCellularGridSpaceND. It represents the cubical grid as a cell complex,...
void saveFIG(const char *filename, PageSize size=Board::BoundingBox, double margin=10.0, bool includeFIGHeader=true) const
Definition: Board.cpp:907
std::string className() const
Return the style name used for drawing this object.
Aim: This class specializes a 'Board' class so as to display DGtal objects more naturally (with <<)....
Definition: Board2D.h:70