ViSP  2.9.0
servoSimuSquareLine2DCamVelocityDisplay.cpp

Servo four lines:

/****************************************************************************
*
* $Id: servoSimuSquareLine2DCamVelocityDisplay.cpp 2457 2010-01-07 10:41:18Z nmelchio $
*
* 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:
* Simulation of a 2D visual servoing on a line.
*
* Authors:
* Nicolas Melchior
*
*****************************************************************************/
#include <visp/vpDebug.h>
#include <visp/vpConfig.h>
#if (defined (VISP_HAVE_X11) || defined(VISP_HAVE_GTK) || defined(VISP_HAVE_GDI))
#include <stdlib.h>
#include <stdio.h>
#include <visp/vpCameraParameters.h>
#include <visp/vpDisplayX.h>
#include <visp/vpDisplayGTK.h>
#include <visp/vpDisplayGDI.h>
#include <visp/vpFeatureBuilder.h>
#include <visp/vpFeatureLine.h>
#include <visp/vpHomogeneousMatrix.h>
#include <visp/vpImage.h>
#include <visp/vpLine.h>
#include <visp/vpMath.h>
#include <visp/vpParseArgv.h>
#include <visp/vpRobotCamera.h>
#include <visp/vpServo.h>
#include <visp/vpServoDisplay.h>
#include <visp/vpSimulatorCamera.h>
// List of allowed command line options
#define GETOPTARGS "cdh"
void usage(const char *name, const char *badparam);
bool getOptions(int argc, const char **argv, bool &click_allowed, bool &display);
void usage(const char *name, const char *badparam)
{
fprintf(stdout, "\n\
Simulation of 2D a visual servoing on a line:\n\
- eye-in-hand control law,\n\
- velocity computed in the camera frame,\n\
- display the camera view.\n\
\n\
SYNOPSIS\n\
%s [-c] [-d] [-h]\n", name);
fprintf(stdout, "\n\
OPTIONS: Default\n\
\n\
-c\n\
Disable the mouse click. Useful to automaze the \n\
execution of this program without humain intervention.\n\
\n\
-d \n\
Turn off the display.\n\
\n\
-h\n\
Print the help.\n");
if (badparam)
fprintf(stdout, "\nERROR: Bad parameter [%s]\n", badparam);
}
bool getOptions(int argc, const char **argv, bool &click_allowed, bool &display)
{
const char *optarg_;
int c;
while ((c = vpParseArgv::parse(argc, argv, GETOPTARGS, &optarg_)) > 1) {
switch (c) {
case 'c': click_allowed = false; break;
case 'd': display = false; break;
case 'h': usage(argv[0], NULL); return false; break;
default:
usage(argv[0], optarg_);
return false; break;
}
}
if ((c == 1) || (c == -1)) {
// standalone param or error
usage(argv[0], NULL);
std::cerr << "ERROR: " << std::endl;
std::cerr << " Bad argument " << optarg_ << std::endl << std::endl;
return false;
}
return true;
}
int
main(int argc, const char ** argv)
{
try {
bool opt_display = true;
bool opt_click_allowed = true;
// Read the command line options
if (getOptions(argc, argv, opt_click_allowed, opt_display) == false) {
exit (-1);
}
vpImage<unsigned char> I(512,512,0) ;
// We open a window using either X11, GTK or GDI.
#if defined VISP_HAVE_X11
vpDisplayX display;
#elif defined VISP_HAVE_GTK
vpDisplayGTK display;
#elif defined VISP_HAVE_GDI
vpDisplayGDI display;
#endif
if (opt_display) {
try{
// Display size is automatically defined by the image (I) size
display.init(I, 100, 100,"Camera view...") ;
// Display the image
// The image class has a member that specify a pointer toward
// the display that has been initialized in the display declaration
// therefore is is no longuer necessary to make a reference to the
// display variable.
}
catch(...)
{
vpERROR_TRACE("Error while displaying the image") ;
exit(-1);
}
}
// Set the camera parameters
double px, py ; px = py = 600 ;
double u0, v0 ; u0 = v0 = 256 ;
vpCameraParameters cam(px,py,u0,v0);
vpServo task ;
// sets the initial camera location
vpHomogeneousMatrix cMo(0.2,0.2,1,
// Compute the position of the object in the world frame
robot.getPosition(wMc) ;
wMo = wMc * cMo;
// sets the final camera location (for simulation purpose)
vpHomogeneousMatrix cMod(0,0,1,
int nbline = 4;
// sets the line coordinates (2 planes) in the world frame
vpLine line[4] ;
line[0].setWorldCoordinates(1,0,0,0.05,0,0,1,0);
line[1].setWorldCoordinates(0,1,0,0.05,0,0,1,0);
line[2].setWorldCoordinates(1,0,0,-0.05,0,0,1,0);
line[3].setWorldCoordinates(0,1,0,-0.05,0,0,1,0);
vpFeatureLine ld[4] ;
// sets the desired position of the visual feature
for(int i = 0; i < nbline; i++)
{
line[i].track(cMod) ;
line[i].print() ;
vpFeatureBuilder::create(ld[i],line[i]) ;
}
// computes the line coordinates in the camera frame and its 2D coordinates
// sets the current position of the visual feature
for(int i = 0; i < nbline; i++)
{
line[i].track(cMo) ;
line[i].print() ;
vpFeatureBuilder::create(l[i],line[i]) ;
l[i].print() ;
}
// define the task
// - we want an eye-in-hand control law
// - robot is controlled in the camera frame
//It could be also interesting to test the following tasks
//task.setInteractionMatrixType(vpServo::DESIRED, vpServo::PSEUDO_INVERSE);
//task.setInteractionMatrixType(vpServo::MEAN, vpServo::PSEUDO_INVERSE);
// we want to see a four lines on four lines
for(int i = 0; i < nbline; i++)
task.addFeature(l[i],ld[i]) ;
// set the gain
task.setLambda(1) ;
// Display task information
task.print() ;
if (opt_display && opt_click_allowed) {
std::cout << "\n\nClick in the camera view window to start..." << std::endl;
}
unsigned int iter=0 ;
// loop
while(iter++<200)
{
std::cout << "---------------------------------------------" << iter <<std::endl ;
// get the robot position
robot.getPosition(wMc) ;
// Compute the position of the camera wrt the object frame
cMo = wMc.inverse() * wMo;
// new line position: retrieve x,y and Z of the vpLine structure
for(int i = 0; i < nbline; i++)
{
line[i].track(cMo) ;
vpFeatureBuilder::create(l[i],line[i]);
}
if (opt_display) {
}
// compute the control law
v = task.computeControlLaw() ;
// send the camera velocity to the controller
std::cout << "|| s - s* || = " << ( task.getError() ).sumSquare() <<std::endl ; ;
}
if (opt_display && opt_click_allowed) {
std::cout << "\nClick in the camera view window to end..." << std::endl;
}
// Display task information
task.print() ;
task.kill();
return 0;
}
catch(vpException e) {
std::cout << "Catch a ViSP exception: " << e << std::endl;
return 1;
}
}
#else
int
main()
{
vpERROR_TRACE("You do not have X11, GTK or GDI display functionalities...");
}
#endif