Visual Servoing Platform  version 3.4.0
testFeatureSegment.cpp
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20  * Inria Rennes - Bretagne Atlantique
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29  * WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
30  *
31  * Description:
32  * Visual feature manipulation (segment).
33  *
34  * Author:
35  * Filip Novotny
36  *
37  *****************************************************************************/
38 
39 #include <fstream>
40 #include <iostream>
41 #include <numeric>
42 #include <vector>
43 
44 #include <visp3/core/vpConfig.h>
45 
46 #if defined(VISP_HAVE_MODULE_ROBOT) \
47  && (defined(VISP_HAVE_LAPACK) || defined(VISP_HAVE_EIGEN3) || defined(VISP_HAVE_OPENCV))
48 
49 #include <visp3/core/vpCameraParameters.h>
50 #include <visp3/core/vpDisplay.h>
51 #include <visp3/core/vpHomogeneousMatrix.h>
52 #include <visp3/core/vpImage.h>
53 #include <visp3/core/vpMath.h>
54 #include <visp3/core/vpPoint.h>
55 #include <visp3/gui/vpDisplayGDI.h>
56 #include <visp3/gui/vpDisplayX.h>
57 #include <visp3/gui/vpPlot.h>
58 #include <visp3/io/vpParseArgv.h>
59 #include <visp3/robot/vpSimulatorCamera.h>
60 #include <visp3/visual_features/vpFeatureBuilder.h>
61 #include <visp3/visual_features/vpFeatureSegment.h>
62 #include <visp3/vs/vpServo.h> //visual servoing task
63 
71 int main(int argc, const char **argv)
72 {
73  try {
74 #if (defined(VISP_HAVE_X11) || defined(VISP_HAVE_GDI))
75  int opt_no_display = 0;
76  int opt_curves = 1;
77 #endif
78  int opt_normalized = 1;
79 
80  // Parse the command line to set the variables
81  vpParseArgv::vpArgvInfo argTable[] = {
82 #if (defined(VISP_HAVE_X11) || defined(VISP_HAVE_GDI))
83  {"-d", vpParseArgv::ARGV_CONSTANT_INT, 0, (char *)&opt_no_display, "Disable display and graphics viewer."},
84 #endif
85  {"-normalized", vpParseArgv::ARGV_INT, (char *)NULL, (char *)&opt_normalized,
86  "1 to use normalized features, 0 for non normalized."},
87  {"-h", vpParseArgv::ARGV_HELP, (char *)NULL, (char *)NULL, "Print the help."},
88  {(char *)NULL, vpParseArgv::ARGV_END, (char *)NULL, (char *)NULL, (char *)NULL}
89  };
90 
91  // Read the command line options
92  if (vpParseArgv::parse(&argc, argv, argTable,
95  return (false);
96  }
97 
98  std::cout << "Used options: " << std::endl;
99 #if (defined(VISP_HAVE_X11) || defined(VISP_HAVE_GDI))
100  opt_curves = (opt_no_display == 0) ? 1 : 0;
101  std::cout << " - no display: " << opt_no_display << std::endl;
102  std::cout << " - curves : " << opt_curves << std::endl;
103 #endif
104  std::cout << " - normalized: " << opt_normalized << std::endl;
105 
106  vpCameraParameters cam(640., 480., 320., 240.);
107 
108 #if defined(VISP_HAVE_X11) || defined(VISP_HAVE_GDI)
109  vpDisplay *display = NULL;
110  if (!opt_no_display) {
111 #if defined(VISP_HAVE_X11)
112  display = new vpDisplayX;
113 #elif defined VISP_HAVE_GDI
114  display = new vpDisplayGDI;
115 #endif
116  }
117 #endif
118  vpImage<unsigned char> I(480, 640, 0);
119 
120 #if (defined(VISP_HAVE_X11) || defined(VISP_HAVE_GDI))
121  if (!opt_no_display)
122  display->init(I);
123 #endif
124 
125  vpHomogeneousMatrix wMo; // Set to indentity. Robot world frame is equal to object frame
126  vpHomogeneousMatrix cMo(-0.5, 0.5, 2., vpMath::rad(10), vpMath::rad(20), vpMath::rad(30));
127  vpHomogeneousMatrix cdMo(0., 0., 1., vpMath::rad(0), vpMath::rad(0), vpMath::rad(0));
128  vpHomogeneousMatrix wMc; // Camera location in the robot world frame
129 
130  vpPoint P[4]; // 4 points in the object frame
131  P[0].setWorldCoordinates(.1, .1, 0.);
132  P[1].setWorldCoordinates(-.1, .1, 0.);
133  P[2].setWorldCoordinates(-.1, -.1, 0.);
134  P[3].setWorldCoordinates(.1, -.1, 0.);
135 
136  vpPoint Pd[4]; // 4 points in the desired camera frame
137  for (int i = 0; i < 4; i++) {
138  Pd[i] = P[i];
139  Pd[i].project(cdMo);
140  }
141  vpPoint Pc[4]; // 4 points in the current camera frame
142  for (int i = 0; i < 4; i++) {
143  Pc[i] = P[i];
144  Pc[i].project(cMo);
145  }
146 
147  vpFeatureSegment seg_cur[2], seg_des[2]; // Current and desired features
148  for (int i = 0; i < 2; i++) {
149  if (opt_normalized) {
150  seg_cur[i].setNormalized(true);
151  seg_des[i].setNormalized(true);
152  } else {
153  seg_cur[i].setNormalized(false);
154  seg_des[i].setNormalized(false);
155  }
156  vpFeatureBuilder::create(seg_cur[i], Pc[i * 2], Pc[i * 2 + 1]);
157  vpFeatureBuilder::create(seg_des[i], Pd[i * 2], Pd[i * 2 + 1]);
158  seg_cur[i].print();
159  seg_des[i].print();
160  }
161 
162  // define visual servoing task
163  vpServo task;
166  task.setLambda(2.);
167 
168  for (int i = 0; i < 2; i++)
169  task.addFeature(seg_cur[i], seg_des[i]);
170 
171 #if (defined(VISP_HAVE_X11) || defined(VISP_HAVE_GDI))
172  if (!opt_no_display) {
174  for (int i = 0; i < 2; i++) {
175  seg_cur[i].display(cam, I, vpColor::red);
176  seg_des[i].display(cam, I, vpColor::green);
177  vpDisplay::flush(I);
178  }
179  }
180 #endif
181 
182 #if (defined(VISP_HAVE_X11) || defined(VISP_HAVE_GDI))
183  vpPlot *graph = NULL;
184  if (opt_curves) {
185  // Create a window (700 by 700) at position (100, 200) with two graphics
186  graph = new vpPlot(2, 500, 500, 700, 10, "Curves...");
187 
188  // The first graphic contains 3 curve and the second graphic contains 3
189  // curves
190  graph->initGraph(0, 6);
191  graph->initGraph(1, 8);
192  // graph->setTitle(0, "Velocities");
193  // graph->setTitle(1, "Error s-s*");
194  }
195 #endif
196 
197  // param robot
198  vpSimulatorCamera robot;
199  float sampling_time = 0.02f; // Sampling period in seconds
200  robot.setSamplingTime(sampling_time);
201  robot.setMaxTranslationVelocity(5.);
203  wMc = wMo * cMo.inverse();
204  robot.setPosition(wMc);
205  int iter = 0;
206 
207  do {
208  double t = vpTime::measureTimeMs();
209  wMc = robot.getPosition();
210  cMo = wMc.inverse() * wMo;
211  for (int i = 0; i < 4; i++)
212  Pc[i].project(cMo);
213 
214  for (int i = 0; i < 2; i++)
215  vpFeatureBuilder::create(seg_cur[i], Pc[i * 2], Pc[i * 2 + 1]);
216 
217 #if (defined(VISP_HAVE_X11) || defined(VISP_HAVE_GDI))
218  if (!opt_no_display) {
220  for (int i = 0; i < 2; i++) {
221  seg_cur[i].display(cam, I, vpColor::red);
222  seg_des[i].display(cam, I, vpColor::green);
223  vpDisplay::flush(I);
224  }
225  }
226 #endif
227 
228  vpColVector v = task.computeControlLaw();
230 
231 #if (defined(VISP_HAVE_X11) || defined(VISP_HAVE_GDI))
232  if (opt_curves) {
233  graph->plot(0, iter, v); // plot velocities applied to the robot
234  graph->plot(1, iter, task.getError()); // plot error vector
235  }
236 #endif
237 
238  vpTime::wait(t, sampling_time * 1000); // Wait 10 ms
239  iter++;
240 
241  } while ((task.getError()).sumSquare() > 0.0005);
242 
243 #if (defined(VISP_HAVE_X11) || defined(VISP_HAVE_GDI))
244  if (graph != NULL)
245  delete graph;
246 #endif
247 #if (defined(VISP_HAVE_X11) || defined(VISP_HAVE_GDI))
248  if (!opt_no_display && display != NULL)
249  delete display;
250 #endif
251 
252  std::cout << "final error=" << (task.getError()).sumSquare() << std::endl;
253  return 0;
254  } catch (const vpException &e) {
255  std::cout << "Catch an exception: " << e << std::endl;
256  return 1;
257  }
258 }
259 
260 #elif !(defined(VISP_HAVE_LAPACK) || defined(VISP_HAVE_EIGEN3) || defined(VISP_HAVE_OPENCV))
261 int main()
262 {
263  std::cout << "Cannot run this example: install Lapack, Eigen3 or OpenCV" << std::endl;
264  return EXIT_SUCCESS;
265 }
266 #else
267 int main()
268 {
269  std::cout << "Test empty since visp_robot module is not available.\n" << std::endl;
270  return 0;
271 }
272 
273 #endif
void setPosition(const vpHomogeneousMatrix &wMc)
VISP_EXPORT int wait(double t0, double t)
Definition: vpTime.cpp:173
End of the argument list.
Definition: vpParseArgv.h:166
Class that defines generic functionnalities for display.
Definition: vpDisplay.h:177
void setWorldCoordinates(double oX, double oY, double oZ)
Definition: vpPoint.cpp:113
void setVelocity(const vpRobot::vpControlFrameType frame, const vpColVector &vel)
Implementation of an homogeneous matrix and operations on such kind of matrices.
Class that defines the simplest robot: a free flying camera.
void addFeature(vpBasicFeature &s, vpBasicFeature &s_star, unsigned int select=vpBasicFeature::FEATURE_ALL)
Definition: vpServo.cpp:490
Argument is for help displaying.
Definition: vpParseArgv.h:165
Display for windows using GDI (available on any windows 32 platform).
Definition: vpDisplayGDI.h:128
Use the X11 console to display images on unix-like OS. Thus to enable this class X11 should be instal...
Definition: vpDisplayX.h:150
Stand alone argument associated to an int var that is set to 1.
Definition: vpParseArgv.h:155
error that can be emited by ViSP classes.
Definition: vpException.h:71
static const vpColor green
Definition: vpColor.h:220
static void flush(const vpImage< unsigned char > &I)
VISP_EXPORT double measureTimeMs()
Definition: vpTime.cpp:126
static bool parse(int *argcPtr, const char **argv, vpArgvInfo *argTable, int flags)
Definition: vpParseArgv.cpp:69
void setMaxRotationVelocity(double maxVr)
Definition: vpRobot.cpp:260
void print(unsigned int select=FEATURE_ALL) const
static const vpColor red
Definition: vpColor.h:217
Class that defines a 3D point in the object frame and allows forward projection of a 3D point in the ...
Definition: vpPoint.h:81
virtual void setSamplingTime(const double &delta_t)
Print an error message if an option is not in the argument list.
Definition: vpParseArgv.h:174
vpColVector getError() const
Definition: vpServo.h:278
vpColVector computeControlLaw()
Definition: vpServo.cpp:929
Class that defines a 2D segment visual features. This class allow to consider two sets of visual feat...
static void display(const vpImage< unsigned char > &I)
Generic class defining intrinsic camera parameters.
void setLambda(double c)
Definition: vpServo.h:404
vpHomogeneousMatrix getPosition() const
void plot(unsigned int graphNum, unsigned int curveNum, double x, double y)
Definition: vpPlot.cpp:286
void setInteractionMatrixType(const vpServoIteractionMatrixType &interactionMatrixType, const vpServoInversionType &interactionMatrixInversion=PSEUDO_INVERSE)
Definition: vpServo.cpp:567
static double rad(double deg)
Definition: vpMath.h:110
void initGraph(unsigned int graphNum, unsigned int curveNbr)
Definition: vpPlot.cpp:206
No abrevation. Print an error message if an option is abrevated (ie "-i" in place of "-int" which is ...
Definition: vpParseArgv.h:175
void setNormalized(bool normalized)
Command line argument parsing.
Definition: vpParseArgv.h:147
Implementation of column vector and the associated operations.
Definition: vpColVector.h:130
vpHomogeneousMatrix inverse() const
No default options like -help.
Definition: vpParseArgv.h:173
This class enables real time drawing of 2D or 3D graphics. An instance of the class open a window whi...
Definition: vpPlot.h:115
static void create(vpFeaturePoint &s, const vpCameraParameters &cam, const vpDot &d)
void setServo(const vpServoType &servo_type)
Definition: vpServo.cpp:218
void setMaxTranslationVelocity(double maxVt)
Definition: vpRobot.cpp:239
void display(const vpCameraParameters &cam, const vpImage< unsigned char > &I, const vpColor &color=vpColor::green, unsigned int thickness=1) const
Argument is associated to an int.
Definition: vpParseArgv.h:157