Visual Servoing Platform version 3.6.0
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vpDetectorQRCode.cpp
1/****************************************************************************
2 *
3 * ViSP, open source Visual Servoing Platform software.
4 * Copyright (C) 2005 - 2023 by Inria. All rights reserved.
5 *
6 * This software is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 * See the file LICENSE.txt at the root directory of this source
11 * distribution for additional information about the GNU GPL.
12 *
13 * For using ViSP with software that can not be combined with the GNU
14 * GPL, please contact Inria about acquiring a ViSP Professional
15 * Edition License.
16 *
17 * See https://visp.inria.fr for more information.
18 *
19 * This software was developed at:
20 * Inria Rennes - Bretagne Atlantique
21 * Campus Universitaire de Beaulieu
22 * 35042 Rennes Cedex
23 * France
24 *
25 * If you have questions regarding the use of this file, please contact
26 * Inria at visp@inria.fr
27 *
28 * This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
29 * WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
30 *
31 * Description:
32 * Base class for bar code detection.
33 *
34*****************************************************************************/
35
36#include <visp3/core/vpConfig.h>
37
38#ifdef VISP_HAVE_ZBAR
39
40#include <visp3/detection/vpDetectorQRCode.h>
41
46{
47 // configure the reader
48 m_scanner.set_config(zbar::ZBAR_NONE, zbar::ZBAR_CFG_ENABLE, 1);
49}
50
58{
59 bool detected = false;
60 m_message.clear();
61 m_polygon.clear();
62 m_nb_objects = 0;
63
64 m_scanner.set_config(zbar::ZBAR_NONE, zbar::ZBAR_CFG_ENABLE, 1);
65 unsigned int width = I.getWidth();
66 unsigned int height = I.getHeight();
67
68 // wrap image data
69 zbar::Image img(width, height, "Y800", I.bitmap, (unsigned long)(width * height));
70
71 // scan the image for barcodes
72 m_nb_objects = (size_t)m_scanner.scan(img);
73
74 // extract results
75 for (zbar::Image::SymbolIterator symbol = img.symbol_begin(); symbol != img.symbol_end(); ++symbol) {
76 m_message.push_back(symbol->get_data());
77 detected = true;
78
79 std::vector<vpImagePoint> polygon;
80 for (unsigned int i = 0; i < (unsigned int)symbol->get_location_size(); i++) {
81 polygon.push_back(vpImagePoint(symbol->get_location_y(i), symbol->get_location_x(i)));
82 }
83 m_polygon.push_back(polygon);
84 }
85
86 // clean up
87 img.set_data(NULL, 0);
88
89 return detected;
90}
91#elif !defined(VISP_BUILD_SHARED_LIBS)
92// Work around to avoid warning: libvisp_core.a(vpDetectorQRCode.cpp.o) has
93// no symbols
94void dummy_vpDetectorQRCode(){};
95#endif
std::vector< std::string > m_message
Message attached to each object.
std::vector< std::vector< vpImagePoint > > m_polygon
For each object, defines the polygon that contains the object.
size_t m_nb_objects
Number of detected objects.
zbar::ImageScanner m_scanner
QR code detector.
bool detect(const vpImage< unsigned char > &I)
Class that defines a 2D point in an image. This class is useful for image processing and stores only ...
Definition of the vpImage class member functions.
Definition vpImage.h:135
unsigned int getWidth() const
Definition vpImage.h:242
Type * bitmap
points toward the bitmap
Definition vpImage.h:139
unsigned int getHeight() const
Definition vpImage.h:184