Visual Servoing Platform version 3.6.0
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servoSimuCylinder2DCamVelocityDisplay.cpp

Servo a cylinder: Servo a cylinder:

Servo a cylinder: Servo a cylinder:

/****************************************************************************
*
* ViSP, open source Visual Servoing Platform software.
* Copyright (C) 2005 - 2023 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 as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
* 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 https://visp.inria.fr for more information.
*
* This software was developed at:
* Inria Rennes - Bretagne Atlantique
* Campus Universitaire de Beaulieu
* 35042 Rennes Cedex
* France
*
* 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 cylinder.
*
*****************************************************************************/
#include <visp3/core/vpConfig.h>
#include <visp3/core/vpDebug.h>
#if (defined(VISP_HAVE_X11) || defined(VISP_HAVE_GTK) || defined(VISP_HAVE_GDI) || defined(VISP_HAVE_OPENCV)) && \
(defined(VISP_HAVE_LAPACK) || defined(VISP_HAVE_EIGEN3) || defined(VISP_HAVE_OPENCV))
#include <stdio.h>
#include <stdlib.h>
#include <visp3/core/vpCameraParameters.h>
#include <visp3/core/vpCylinder.h>
#include <visp3/core/vpHomogeneousMatrix.h>
#include <visp3/core/vpImage.h>
#include <visp3/core/vpMath.h>
#include <visp3/gui/vpDisplayGDI.h>
#include <visp3/gui/vpDisplayGTK.h>
#include <visp3/gui/vpDisplayOpenCV.h>
#include <visp3/gui/vpDisplayX.h>
#include <visp3/io/vpParseArgv.h>
#include <visp3/robot/vpSimulatorCamera.h>
#include <visp3/visual_features/vpFeatureBuilder.h>
#include <visp3/visual_features/vpFeatureLine.h>
#include <visp3/vs/vpServo.h>
#include <visp3/vs/vpServoDisplay.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 a 2D visual servoing on a cylinder:\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 automate the \n\
execution of this program without human 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;
default:
usage(argv[0], optarg_);
return false;
}
}
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) {
return EXIT_FAILURE;
}
vpImage<unsigned char> I(512, 512, 255);
// 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;
#elif defined(HAVE_OPENCV_HIGHGUI)
vpDisplayOpenCV 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 longer necessary to make a reference to the
// display variable.
}
catch (...) {
vpERROR_TRACE("Error while displaying the image");
return EXIT_FAILURE;
}
}
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, 0.1, 2, vpMath::rad(5), vpMath::rad(5), vpMath::rad(20));
robot.getPosition(wMc);
wMo = wMc * cMo; // Compute the position of the object in the world frame
// sets the final camera location (for simulation purpose)
// sets the cylinder coordinates in the world frame
vpCylinder cylinder(0, 1, 0, // direction
0, 0, 0, // point of the axis
0.1); // radius
// sets the desired position of the visual feature
cylinder.track(cMod);
cylinder.print();
for (unsigned int i = 0; i < 2; i++)
vpFeatureBuilder::create(ld[i], cylinder, i);
// computes the cylinder coordinates in the camera frame and its 2D
// coordinates sets the current position of the visual feature
cylinder.track(cMo);
cylinder.print();
for (unsigned int i = 0; i < 2; i++) {
vpFeatureBuilder::create(l[i], cylinder, i);
l[i].print();
}
// define the task
// - we want an eye-in-hand control law
// - robot is controlled in the camera frame
// task.setInteractionMatrixType(vpServo::CURRENT,
// vpServo::PSEUDO_INVERSE) ;
// it can also be interesting to test these possibilities
// task.setInteractionMatrixType(vpServo::MEAN,
// vpServo::PSEUDO_INVERSE) ;
// task.setInteractionMatrixType(vpServo::DESIRED, vpServo::TRANSPOSE) ;
// task.setInteractionMatrixType(vpServo::CURRENT, vpServo::TRANSPOSE) ;
// - we want to see 2 lines on 2 lines
task.addFeature(l[0], ld[0]);
task.addFeature(l[1], ld[1]);
vpServoDisplay::display(task, cam, I);
// Display task information
task.print();
if (opt_display && opt_click_allowed) {
std::cout << "\n\nClick in the camera view window to start..." << std::endl;
}
// - set the gain
task.setLambda(1);
// Display task information
task.print();
unsigned int iter = 0;
// loop
do {
std::cout << "---------------------------------------------" << iter++ << std::endl;
// get the robot position
robot.getPosition(wMc);
// Compute the position of the object frame in the camera frame
cMo = wMc.inverse() * wMo;
// new line position
// retrieve x,y and Z of the vpLine structure
cylinder.track(cMo);
// cylinder.print() ;
for (unsigned int i = 0; i < 2; i++) {
vpFeatureBuilder::create(l[i], cylinder, i);
// l[i].print() ;
}
if (opt_display) {
vpServoDisplay::display(task, cam, I);
}
// compute the control law
v = task.computeControlLaw();
// send the camera velocity to the controller
std::cout << "|| s - s* || = " << (task.getError()).sumSquare() << std::endl;
// vpDisplay::getClick(I) ;
} while ((task.getError()).sumSquare() > 1e-9);
if (opt_display && opt_click_allowed) {
vpDisplay::displayText(I, 20, 20, "Click to quit...", vpColor::black);
}
// Display task information
task.print();
return EXIT_SUCCESS;
}
catch (const vpException &e) {
std::cout << "Catch a ViSP exception: " << e << std::endl;
return EXIT_FAILURE;
}
}
#elif !(defined(VISP_HAVE_LAPACK) || defined(VISP_HAVE_EIGEN3) || defined(VISP_HAVE_OPENCV))
int main()
{
std::cout << "Cannot run this example: install Lapack, Eigen3 or OpenCV" << std::endl;
return EXIT_SUCCESS;
}
#else
int main()
{
std::cout << "You do not have X11, or GTK, or GDI (Graphical Device Interface) or OpenCV functionalities to display "
"images..."
<< std::endl;
std::cout << "Tip if you are on a unix-like system:" << std::endl;
std::cout << "- Install X11, configure again ViSP using cmake and build again this example" << std::endl;
std::cout << "Tip if you are on a windows-like system:" << std::endl;
std::cout << "- Install GDI, configure again ViSP using cmake and build again this example" << std::endl;
return EXIT_SUCCESS;
}
#endif
Generic class defining intrinsic camera parameters.
Implementation of column vector and the associated operations.
static const vpColor black
Definition vpColor.h:205
Class that defines a 3D cylinder in the object frame and allows forward projection of a 3D cylinder i...
Definition vpCylinder.h:98
Display for windows using GDI (available on any windows 32 platform).
The vpDisplayGTK allows to display image using the GTK 3rd party library. Thus to enable this class G...
The vpDisplayOpenCV allows to display image using the OpenCV library. Thus to enable this class OpenC...
Use the X11 console to display images on unix-like OS. Thus to enable this class X11 should be instal...
Definition vpDisplayX.h:132
static bool getClick(const vpImage< unsigned char > &I, bool blocking=true)
static void display(const vpImage< unsigned char > &I)
static void flush(const vpImage< unsigned char > &I)
static void displayText(const vpImage< unsigned char > &I, const vpImagePoint &ip, const std::string &s, const vpColor &color)
error that can be emitted by ViSP classes.
Definition vpException.h:59
static void create(vpFeaturePoint &s, const vpCameraParameters &cam, const vpDot &d)
Class that defines a 2D line visual feature which is composed by two parameters that are and ,...
void print(unsigned int select=FEATURE_ALL) const
Implementation of an homogeneous matrix and operations on such kind of matrices.
vpHomogeneousMatrix inverse() const
Definition of the vpImage class member functions.
Definition vpImage.h:135
static double rad(double deg)
Definition vpMath.h:116
static bool parse(int *argcPtr, const char **argv, vpArgvInfo *argTable, int flags)
void setVelocity(const vpRobot::vpControlFrameType frame, const vpColVector &vel)
@ CAMERA_FRAME
Definition vpRobot.h:80
static void display(const vpServo &s, const vpCameraParameters &cam, const vpImage< unsigned char > &I, vpColor currentColor=vpColor::green, vpColor desiredColor=vpColor::red, unsigned int thickness=1)
void setInteractionMatrixType(const vpServoIteractionMatrixType &interactionMatrixType, const vpServoInversionType &interactionMatrixInversion=PSEUDO_INVERSE)
Definition vpServo.cpp:564
@ EYEINHAND_CAMERA
Definition vpServo.h:151
void print(const vpServo::vpServoPrintType display_level=ALL, std::ostream &os=std::cout)
Definition vpServo.cpp:299
void setLambda(double c)
Definition vpServo.h:403
void setServo(const vpServoType &servo_type)
Definition vpServo.cpp:210
vpColVector getError() const
Definition vpServo.h:276
@ PSEUDO_INVERSE
Definition vpServo.h:199
vpColVector computeControlLaw()
Definition vpServo.cpp:930
@ DESIRED
Definition vpServo.h:183
void addFeature(vpBasicFeature &s, vpBasicFeature &s_star, unsigned int select=vpBasicFeature::FEATURE_ALL)
Definition vpServo.cpp:487
Class that defines the simplest robot: a free flying camera.
#define vpERROR_TRACE
Definition vpDebug.h:388