Visual Servoing Platform version 3.5.0
vpDetectorQRCode.cpp
1/****************************************************************************
2 *
3 * ViSP, open source Visual Servoing Platform software.
4 * Copyright (C) 2005 - 2019 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
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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 http://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
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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 * Authors:
35 * Fabien Spindler
36 *
37 *****************************************************************************/
38
39#include <visp3/core/vpConfig.h>
40
41#ifdef VISP_HAVE_ZBAR
42
43#include <visp3/detection/vpDetectorQRCode.h>
44
49{
50 // configure the reader
51 m_scanner.set_config(zbar::ZBAR_NONE, zbar::ZBAR_CFG_ENABLE, 1);
52}
53
61{
62 bool detected = false;
63 m_message.clear();
64 m_polygon.clear();
65 m_nb_objects = 0;
66
67 m_scanner.set_config(zbar::ZBAR_NONE, zbar::ZBAR_CFG_ENABLE, 1);
68 unsigned int width = I.getWidth();
69 unsigned int height = I.getHeight();
70
71 // wrap image data
72 zbar::Image img(width, height, "Y800", I.bitmap, (unsigned long)(width * height));
73
74 // scan the image for barcodes
75 m_nb_objects = (size_t)m_scanner.scan(img);
76
77 // extract results
78 for (zbar::Image::SymbolIterator symbol = img.symbol_begin(); symbol != img.symbol_end(); ++symbol) {
79 m_message.push_back(symbol->get_data());
80 detected = true;
81
82 std::vector<vpImagePoint> polygon;
83 for (unsigned int i = 0; i < (unsigned int)symbol->get_location_size(); i++) {
84 polygon.push_back(vpImagePoint(symbol->get_location_y(i), symbol->get_location_x(i)));
85 }
86 m_polygon.push_back(polygon);
87 }
88
89 // clean up
90 img.set_data(NULL, 0);
91
92 return detected;
93}
94#elif !defined(VISP_BUILD_SHARED_LIBS)
95// Work arround to avoid warning: libvisp_core.a(vpDetectorQRCode.cpp.o) has
96// no symbols
97void dummy_vpDetectorQRCode(){};
98#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: vpImagePoint.h:88
unsigned int getWidth() const
Definition: vpImage.h:246
Type * bitmap
points toward the bitmap
Definition: vpImage.h:143
unsigned int getHeight() const
Definition: vpImage.h:188