/usr/include/x86_64-linux-gnu/visp3/io/vpDiskGrabber.h is in libvisp-io-dev 3.0.0-4.
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*
* This file is part of the ViSP software.
* Copyright (C) 2005 - 2015 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://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:
* Disk framegrabber.
*
* Authors:
* Eric Marchand
*
*****************************************************************************/
/*!
\file vpDiskGrabber.h
\brief Class to load image sequence from the disk.
*/
#ifndef vpDiskGrabber_hh
#define vpDiskGrabber_hh
#include <visp3/io/vpImageIo.h>
#include <visp3/core/vpFrameGrabber.h>
#include <visp3/core/vpRGBa.h>
#include <visp3/core/vpDebug.h>
/*!
\class vpDiskGrabber
\ingroup group_io_video
\brief Class to grab (ie. read) images from the disk.
Defined a virtual video device. "Grab" the images from the disk.
Derived from the vpFrameGrabber class.
\sa vpFrameGrabber
Here an example of capture from the directory
"/local/soft/ViSP/ViSP-images/cube". We want to acquire 10 images
from the first named "image.0001.pgm" by steps of 2.
\code
#include <visp3/core/vpImage.h>
#include <visp3/io/vpDiskGrabber.h>
int main(){
vpImage<unsigned char> I; // Grey level image
// Declare a framegrabber able to read a sequence of successive
// images from the disk
vpDiskGrabber g;
// Set the path to the directory containing the sequence
g.setDirectory("/local/soft/ViSP/ViSP-images/cube");
// Set the image base name. The directory and the base name constitute
// the constant part of the full filename
g.setBaseName("image.");
// Set the step between two images of the sequence
g.setStep(2);
// Set the number of digits to build the image number
g.setNumberOfZero(4);
// Set the first frame number of the sequence
g.setImageNumber(1);
// Set the image file extension
g.setExtension("pgm");
// Open the framegrabber by loading the first image of the sequence
g.open(I) ;
unsigned int cpt = 1;
// this is the loop over the image sequence
while(cpt ++ < 10)
{
// read the image and then increment the image counter so that the next
// call to acquire(I) will get the next image
g.acquire(I) ;
}
}
\endcode
*/
class VISP_EXPORT vpDiskGrabber : public vpFrameGrabber
{
private:
long image_number ; //!< id of the next image to be read
int image_step ; //!< increment between two image id
unsigned int number_of_zero ; //!< number of zero in the image name (image.00000.pgm)
char directory[FILENAME_MAX] ; //!< image location
char base_name[FILENAME_MAX] ; //!< image base name
char extension[FILENAME_MAX] ; //!< image extension
bool useGenericName;
char genericName[FILENAME_MAX];
public:
vpDiskGrabber();
vpDiskGrabber(const char *genericName);
vpDiskGrabber(const char *dir, const char *basename,
long number, int step, unsigned int noz,
const char *ext) ;
virtual ~vpDiskGrabber() ;
void open(vpImage<unsigned char> &I) ;
void open(vpImage<vpRGBa> &I) ;
void open(vpImage<float> &I) ;
void acquire(vpImage<unsigned char> &I);
void acquire(vpImage<vpRGBa> &I);
void acquire(vpImage<float> &I) ;
void acquire(vpImage<unsigned char> &I, long image_number);
void acquire(vpImage<vpRGBa> &I, long image_number);
void acquire(vpImage<float> &I, long image_number) ;
void close();
void setDirectory(const char *dir);
void setBaseName(const char *name);
void setImageNumber(long number) ;
void setStep(int a);
void setNumberOfZero(unsigned int noz);
void setExtension(const char *ext);
void setGenericName(const char *genericName);
/*!
Return the current image number.
*/
long getImageNumber() { return image_number; };
} ;
#endif
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