JeVoisBase  1.17
JeVois Smart Embedded Machine Vision Toolkit Base Modules
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QRcode.H
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1 // ///////////////////////////////////////////////////////////////////////////////////////////////////////////////////
2 //
3 // JeVois Smart Embedded Machine Vision Toolkit - Copyright (C) 2016 by Laurent Itti, the University of Southern
4 // California (USC), and iLab at USC. See http://iLab.usc.edu and http://jevois.org for information about this project.
5 //
6 // This file is part of the JeVois Smart Embedded Machine Vision Toolkit. This program is free software; you can
7 // redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software
8 // Foundation, version 2. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
9 // without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
10 // License for more details. You should have received a copy of the GNU General Public License along with this program;
11 // if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
12 //
13 // Contact information: Laurent Itti - 3641 Watt Way, HNB-07A - Los Angeles, CA 90089-2520 - USA.
14 // Tel: +1 213 740 3527 - itti@pollux.usc.edu - http://iLab.usc.edu - http://jevois.org
15 // ///////////////////////////////////////////////////////////////////////////////////////////////////////////////////
16 /*! \file */
17 
18 #pragma once
19 
21 #include <jevois/GPU/GUIhelper.H>
22 #include <zbar.h>
23 
24 namespace jevois { class StdModule; }
25 
26 namespace qrcode
27 {
28  static jevois::ParameterCategory const ParamCateg("QRcode/Barcode Options");
29 
30  //! Parameter \relates QRcode
31  JEVOIS_DECLARE_PARAMETER_WITH_CALLBACK(symbol, std::string, "Type(s) of QR code / barcode symbols searched for, "
32  "multiple entries are possible and should be separated by / characters. "
33  "Selecting many symbol types or ALL will slow down processing. Supported "
34  "symbols are: QRCODE, EAN2, EAN5, EAN8, EAN13, UPCE, UPCA, ISBN10, ISBN13, "
35  "COMPOSITE, I25, DATABAR, DATABAREXP, CODABAR, CODE39, PDF417, CODE93, "
36  "and CODE128",
37  "ALL", ParamCateg);
38 
39  //! Parameter \relates QRcode
40  JEVOIS_DECLARE_PARAMETER(xdensity, int, "Scanner vertical scan density (pixel stride), or 0 to disable",
41  1, ParamCateg);
42 
43  //! Parameter \relates QRcode
44  JEVOIS_DECLARE_PARAMETER(ydensity, int, "Scanner horizontal scan density (pixel stride), or 0 to disable",
45  1, ParamCateg);
46 }
47 
48 //! QRcode and Barcode detection using ZBar
49 /*! This is drectly modeled after the scan_image.cpp ZBar example code. \ingroup components */
50 class QRcode : public jevois::Component,
51  public jevois::Parameter<qrcode::symbol, qrcode::xdensity, qrcode::ydensity>
52 {
53  public:
54  //! Constructor
55  QRcode(std::string const & instance);
56 
57  //! Destructor
58  ~QRcode();
59 
60  //! Process a greayscale image
61  /*! Results will be stored in the image */
62  void process(zbar::Image & image);
63 
64  //! Process a greayscale image
65  /*! Results will be stored in the provided vector */
66  void process(zbar::Image & image, std::vector<std::string> & results);
67 
68  //! Draw any markers previously detected by process()
69  /*! If txtx,txty are positive, also print a text string there */
70  void drawDetections(jevois::RawImage & outimg, int txtx, int txty, zbar::Image & zgray, int w, int h, size_t nshow);
71 
72 #ifdef JEVOIS_PRO
73  //! Draw any markers previously detected by process()
74  void drawDetections(jevois::GUIhelper & helper, zbar::Image & zgray, int w, int h);
75 #endif
76 
77  //! Send serial messages about our detections
78  void sendSerial(jevois::StdModule * mod, zbar::Image & img, unsigned int camw, unsigned int camh);
79 
80  protected:
81  //! Parse symbol config strings when they change
82  void onParamChange(qrcode::symbol const & param, std::string const & newval) override;
83 
84  std::shared_ptr<zbar::ImageScanner> itsScanner;
85 };
QRcode::~QRcode
~QRcode()
Destructor.
Definition: QRcode.C:31
QRcode::QRcode
QRcode(std::string const &instance)
Constructor.
Definition: QRcode.C:24
jevois::GUIhelper
JEVOIS_DECLARE_PARAMETER
JEVOIS_DECLARE_PARAMETER(thresh1, double, "First threshold for hysteresis", 50.0, ParamCateg)
jevois::Component
QRcode::onParamChange
void onParamChange(qrcode::symbol const &param, std::string const &newval) override
Parse symbol config strings when they change.
Definition: QRcode.C:35
QRcode::sendSerial
void sendSerial(jevois::StdModule *mod, zbar::Image &img, unsigned int camw, unsigned int camh)
Send serial messages about our detections.
Definition: QRcode.C:126
jevois::RawImage
jevois::ParameterCategory
QRcode::itsScanner
std::shared_ptr< zbar::ImageScanner > itsScanner
Definition: QRcode.H:84
jevois
JEVOIS_DECLARE_PARAMETER_WITH_CALLBACK
JEVOIS_DECLARE_PARAMETER_WITH_CALLBACK(l2grad, bool, "Use more accurate L2 gradient norm if true, L1 if false", false, ParamCateg)
Component.H
QRcode
QRcode and Barcode detection using ZBar.
Definition: QRcode.H:50
QRcode::process
void process(zbar::Image &image)
Process a greayscale image.
Definition: QRcode.C:94
QRcode::drawDetections
void drawDetections(jevois::RawImage &outimg, int txtx, int txty, zbar::Image &zgray, int w, int h, size_t nshow)
Draw any markers previously detected by process()
Definition: QRcode.C:148
h
int h
qrcode
Definition: QRcode.H:26
jevois::StdModule
GUIhelper.H