ViSP  2.10.0
imageSequenceReader.cpp

Reading an image sequence using vpVideoReader class.

/****************************************************************************
*
* $Id: imageDiskRW.cpp 2158 2009-05-07 07:24:51Z 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:
* Reading an image sequence.
*
* Authors:
* Eric Marchand
*
*****************************************************************************/
#include <visp/vpImage.h>
#include <visp/vpImageIo.h>
#include <visp/vpParseArgv.h>
#include <visp/vpIoTools.h>
#include <visp/vpDebug.h>
#include <visp/vpVideoReader.h>
#include <visp/vpDisplayOpenCV.h>
#include <visp/vpDisplayX.h>
#include <visp/vpDisplayGTK.h>
#include <visp/vpDisplayGDI.h>
#if defined(VISP_HAVE_X11) || defined(VISP_HAVE_GDI) || defined(VISP_HAVE_OPENCV) || defined(VISP_HAVE_GTK)
// List of allowed command line options
#define GETOPTARGS "cdi:p:f:h"
void usage(const char *name, const char *badparam, std::string ipath, std::string ppath);
bool getOptions(int argc, const char **argv,
std::string &ipath, std::string &ppath, int &first, bool &click_allowed, bool &display);
void usage(const char *name, const char *badparam, std::string ipath, std::string ppath)
{
fprintf(stdout, "\n\
Read an image sequence on the disk.\n\
\n\
SYNOPSIS\n\
%s [-i <input images path>] [-p <personal image sequence path>]\n\
[-c][-d][-h]\n \
", name);
fprintf(stdout, "\n\
OPTIONS: Default\n\
-i <input images path> %s\n\
Set ViSP-images input path.\n\
From this path read \"ViSP-images/cube/image.%%04d.pgm\"\n\
images.\n\
Setting the VISP_INPUT_IMAGE_PATH environment\n\
variable produces the same behaviour than using\n\
this option.\n\
\n\
-p <personal image sequence path> %s\n\
Specify a personal folder containing an image sequence \n\
to process.\n\
Example : \"/Temp/ViSP-images/cube/image.%%04d.pgm\"\n\
%%04d is for the image numbering.\n\
\n\
-f <index of the first frame> \n\
Specify the first image index.\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\n",
ipath.c_str(), ppath.c_str());
if (badparam) {
fprintf(stderr, "ERROR: \n" );
fprintf(stderr, "\nBad parameter [%s]\n", badparam);
}
}
bool getOptions(int argc, const char **argv,
std::string &ipath, std::string &ppath, int &first, 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 'i': ipath = optarg_; break;
case 'p': ppath = optarg_; break;
case 'f': first = atoi(optarg_); break;
case 'h': usage(argv[0], NULL, ipath, ppath); return false; break;
default:
usage(argv[0], optarg_, ipath, ppath); return false; break;
}
}
if ((c == 1) || (c == -1)) {
// standalone param or error
usage(argv[0], NULL, ipath, ppath);
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 {
std::string env_ipath;
std::string opt_ipath;
std::string ipath;
std::string opt_ppath;
std::string filename;
int opt_first = 1;
bool opt_click_allowed = true;
bool opt_display = true;
std::cout << "-------------------------------------------------------" << std::endl ;
std::cout << " videoImageSequenceReader.cpp" <<std::endl << std::endl ;
std::cout << " reading an image sequence" << std::endl ;
std::cout << "-------------------------------------------------------" << std::endl ;
std::cout << std::endl ;
// Get the visp-images-data package path or VISP_INPUT_IMAGE_PATH environment variable value
env_ipath = vpIoTools::getViSPImagesDataPath();
// Set the default input path
if (! env_ipath.empty())
ipath = env_ipath;
// Read the command line options
if (getOptions(argc, argv, opt_ipath, opt_ppath, opt_first, opt_click_allowed,
opt_display) == false) {
exit (-1);
}
// Get the option values
if (!opt_ipath.empty())
ipath = opt_ipath;
// Compare ipath and env_ipath. If they differ, we take into account
// the input path comming from the command line option
if (!opt_ipath.empty() && !env_ipath.empty() && opt_ppath.empty()) {
if (ipath != env_ipath) {
std::cout << std::endl
<< "WARNING: " << std::endl;
std::cout << " Since -i <visp image path=" << ipath << "> "
<< " is different from VISP_IMAGE_PATH=" << env_ipath << std::endl
<< " we skip the environment variable." << std::endl;
}
}
// Test if an input path is set
if (opt_ipath.empty() && env_ipath.empty() && opt_ppath.empty()){
usage(argv[0], NULL, ipath, opt_ppath);
std::cerr << std::endl
<< "ERROR:" << std::endl;
std::cerr << " Use -i <visp image path> option or set VISP_INPUT_IMAGE_PATH "
<< std::endl
<< " environment variable to specify the location of the " << std::endl
<< " video path where test images are located." << std::endl << std::endl;
exit(-1);
}
// vpImage is a template class you can declare vpImage of ... everything...
vpImage<vpRGBa> I ;
//Create the video Reader
vpVideoReader reader;
if (opt_ppath.empty())
{
filename = vpIoTools::createFilePath(ipath, "ViSP-images/mire-2/image.%04d.pgm");
}
else
{
filename.assign(opt_ppath);
}
//Initialize the reader and get the first frame.
reader.setFileName(filename);
reader.setFirstFrameIndex(opt_first);
reader.open(I);
// We open a window using either X11, GTK, GDI or OpenCV.
#if defined VISP_HAVE_X11
vpDisplayX display;
#elif defined VISP_HAVE_GTK
vpDisplayGTK display;
#elif defined VISP_HAVE_GDI
vpDisplayGDI display;
#elif defined VISP_HAVE_OPENCV
vpDisplayOpenCV display;
#endif
if (opt_display) {
// Display size is automatically defined by the image (I) size
display.init(I, 100, 100,"Display video frame") ;
vpDisplay::display(I) ;
vpDisplay::flush(I) ;
}
if (opt_display && opt_click_allowed)
{
std::cout << "Click on the image to read and display the second frame" << std::endl;
vpDisplay::getClick(I);
}
reader.getFrame(I,opt_first+1);
if (opt_display)
{
vpDisplay::display(I) ;
vpDisplay::flush(I);
}
if (opt_display && opt_click_allowed)
{
std::cout << "Click on the image to read and display the last frame" << std::endl;
vpDisplay::getClick(I);
}
reader.getFrame(I,reader.getLastFrameIndex());
if (opt_display)
{
vpDisplay::display(I) ;
vpDisplay::flush(I);
}
if (opt_display && opt_click_allowed)
{
std::cout << "Click to see the video" << std::endl;
vpDisplay::getClick(I);
}
int lastFrame = reader.getLastFrameIndex();
for (int i = opt_first; i <= lastFrame; i++)
{
reader.getFrame(I,i);
if (opt_display)
{
vpDisplay::display(I) ;
vpDisplay::flush(I);
}
}
if (opt_display && opt_click_allowed)
{
std::cout << "Click to exit the test" << std::endl;
vpDisplay::getClick(I);
}
return 0;
}
catch(vpException e) {
std::cout << "Catch an exception: " << e << std::endl;
return 1;
}
}
#else
int main()
{
std::cout << "Sorry, no display is available. We quit this example."
<< std::endl;
return 0;
}
#endif