ViSP  2.9.0
testFeatureSegment.cpp

Shows how to build a task with a segment visual feature.

/****************************************************************************
*
* $Id: testFeature.cpp 3530 2012-01-03 10:52:12Z fspindle $
*
* This file is part of the ViSP software.
* Copyright (C) 2005 - 2014 by INRIA. All rights reserved.
*
* This software is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* ("GPL") version 2 as published by the Free Software Foundation.
* See the file LICENSE.txt at the root directory of this source
* distribution for additional information about the GNU GPL.
*
* For using ViSP with software that can not be combined with the GNU
* GPL, please contact INRIA about acquiring a ViSP Professional
* Edition License.
*
* See http://www.irisa.fr/lagadic/visp/visp.html for more information.
*
* This software was developed at:
* INRIA Rennes - Bretagne Atlantique
* Campus Universitaire de Beaulieu
* 35042 Rennes Cedex
* France
* http://www.irisa.fr/lagadic
*
* If you have questions regarding the use of this file, please contact
* INRIA at visp@inria.fr
*
* This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
* WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*
*
* Description:
* Visual feature manipulation (segment).
*
* Author:
* Filip Novotny
*
*****************************************************************************/
#include <fstream>
#include <iostream>
#include <vector>
#include <numeric>
#include <visp/vpConfig.h>
#include <visp/vpCameraParameters.h>
#include <visp/vpDisplay.h>
#include <visp/vpDisplayGDI.h>
#include <visp/vpDisplayX.h>
#include <visp/vpFeatureBuilder.h>
#include <visp/vpFeatureSegment.h>
#include <visp/vpHomogeneousMatrix.h>
#include <visp/vpImage.h>
#include <visp/vpMath.h>
#include <visp/vpParseArgv.h>
#include <visp/vpPlot.h>
#include <visp/vpPoint.h>
#include <visp/vpRobotCamera.h>
#include <visp/vpServo.h> //visual servoing task
int main(int argc, const char **argv)
{
try {
#if (defined (VISP_HAVE_X11) || defined (VISP_HAVE_GDI))
int opt_display = 1;
int opt_curves = 1;
#endif
int opt_normalized = 1;
// Parse the command line to set the variables
vpParseArgv::vpArgvInfo argTable[] =
{
#if (defined (VISP_HAVE_X11) || defined (VISP_HAVE_GDI))
{"-d", vpParseArgv::ARGV_CONSTANT, 0, (char *) &opt_display,
"Disable display and graphics viewer."},
#endif
{"-normalized", vpParseArgv::ARGV_INT, (char*) NULL, (char *) &opt_normalized,
"1 to use normalized features, 0 for non normalized."},
{"-h", vpParseArgv::ARGV_HELP, (char*) NULL, (char *) NULL,
"Print the help."},
{(char*) NULL, vpParseArgv::ARGV_END, (char*) NULL, (char*) NULL, (char*) NULL}
} ;
// Read the command line options
if(vpParseArgv::parse(&argc, argv, argTable,
return (false);
}
std::cout << "Used options: " << std::endl;
#if (defined (VISP_HAVE_X11) || defined (VISP_HAVE_GDI))
opt_curves = opt_display;
std::cout << " - display : " << opt_display << std::endl;
std::cout << " - curves : " << opt_curves << std::endl;
#endif
std::cout << " - normalized: " << opt_normalized << std::endl;
vpCameraParameters cam(640.,480.,320.,240.);
#if defined(VISP_HAVE_X11) || defined(VISP_HAVE_GDI)
vpDisplay *display = NULL;
if (opt_display) {
#if defined(VISP_HAVE_X11)
display = new vpDisplayX;
#elif defined VISP_HAVE_GDI
display = new vpDisplayGDI;
#endif
}
#endif
vpImage<unsigned char> I(480,640,0);
#if (defined (VISP_HAVE_X11) || defined (VISP_HAVE_GDI))
if (opt_display)
display->init(I);
#endif
vpHomogeneousMatrix cMo (-0.5, 0.5, 4., vpMath::rad(10), vpMath::rad(20), vpMath::rad(90));
vpPoint P[4]; // 4 points in the object frame
P[0].setWorldCoordinates( .1, .1, 0.);
P[1].setWorldCoordinates(-.1, .1, 0.);
P[2].setWorldCoordinates(-.1, -.1, 0.);
P[3].setWorldCoordinates( .1, -.1, 0.);
vpPoint Pd[4]; // 4 points in the desired camera frame
for (int i=0; i<4; i++) {
Pd[i] = P[i];
Pd[i].project(cdMo);
}
vpPoint Pc[4]; // 4 points in the current camera frame
for (int i=0; i<4; i++) {
Pc[i] = P[i];
Pc[i].project(cMo);
}
vpFeatureSegment seg_cur[2], seg_des[2]; // Current and desired features
for (int i=0; i <2; i++)
{
if (opt_normalized) {
seg_cur[i].setNormalized(true);
seg_des[i].setNormalized(true);
}
else {
seg_cur[i].setNormalized(false);
seg_des[i].setNormalized(false);
}
vpFeatureBuilder::create(seg_cur[i], Pc[i*2], Pc[i*2+1]);
vpFeatureBuilder::create(seg_des[i], Pd[i*2], Pd[i*2+1]);
seg_cur[i].print();
seg_des[i].print();
}
//define visual servoing task
vpServo task;
task.setLambda(1) ;
for (int i=0; i <2; i++)
task.addFeature(seg_cur[i], seg_des[i]);
#if (defined (VISP_HAVE_X11) || defined(VISP_HAVE_GDI))
if (opt_display) {
for (int i=0; i <2; i++) {
seg_cur[i].display(cam, I, vpColor::red);
seg_des[i].display(cam, I, vpColor::green);
}
}
#endif
#if (defined (VISP_HAVE_X11) || defined (VISP_HAVE_GDI))
vpPlot *graph = NULL;
if (opt_curves)
{
//Create a window (700 by 700) at position (100, 200) with two graphics
graph = new vpPlot(2, 500, 500, 700, 10, "Curves...");
//The first graphic contains 3 curve and the second graphic contains 3 curves
graph->initGraph(0,6);
graph->initGraph(1,8);
// graph->setTitle(0, "Velocities");
// graph->setTitle(1, "Error s-s*");
}
#endif
//param robot
vpRobotCamera robot ;
float sampling_time = 0.010f ; // Sampling period in seconds
robot.setSamplingTime(sampling_time) ;
robot.setPosition(cMo) ;
int iter=0;
do{
double t = vpTime::measureTimeMs();
robot.getPosition(cMo);
for (int i=0; i <4; i++)
Pc[i].project(cMo);
for (int i=0; i <2; i++)
vpFeatureBuilder::create(seg_cur[i], Pc[i*2], Pc[i*2+1]);
#if (defined (VISP_HAVE_X11) || defined(VISP_HAVE_GDI))
if (opt_display) {
for (int i=0; i <2; i++) {
seg_cur[i].display(cam, I, vpColor::red);
seg_des[i].display(cam, I, vpColor::green);
}
}
#endif
#if (defined (VISP_HAVE_X11) || defined (VISP_HAVE_GDI))
if (opt_curves)
{
graph->plot(0, iter, v); // plot velocities applied to the robot
graph->plot(1, iter, task.getError()); // plot error vector
}
#endif
vpTime::wait(t, sampling_time * 1000); // Wait 10 ms
iter ++;
} while(( task.getError() ).sumSquare() > 0.0005);
// A call to kill() is requested here to destroy properly the current
// and desired feature lists.
task.kill();
#if (defined (VISP_HAVE_X11) || defined (VISP_HAVE_GDI))
if (graph != NULL)
delete graph;
#endif
#if (defined (VISP_HAVE_X11) || defined (VISP_HAVE_GDI))
if (opt_display && display != NULL)
delete display;
#endif
std::cout << "final error=" << ( task.getError() ).sumSquare() << std::endl;
return 0;
}
catch(vpException e) {
std::cout << "Catch an exception: " << e << std::endl;
return 1;
}
}