├── .DS_Store
├── Makefile
├── README.md
├── main
├── main.cpp
└── main.o


/.DS_Store:
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https://raw.githubusercontent.com/ayoungprogrammer/WebcamCodeScanner/c287eece9e6a7963f99ff32e8ccd38465b1a1634/.DS_Store


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/Makefile:
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 1 | CC=g++
 2 | ARCH=-arch x86_64
 3 | 
 4 | 
 5 | INCLUDE_FLAGS=-I/usr/local/include
 6 | CFLAGS=-c -Wall $(INCLUDE_FLAGS)
 7 | LDFLAGS= -L/usr/local/lib -lopencv_core -lopencv_highgui -lopencv_imgproc -lzbar
 8 | 
 9 | SOURCES = main.cpp
10 | OBJECTS=$(SOURCES:.cpp=.o)
11 | 
12 | EXECUTABLE=main
13 | 
14 | all : $(SOURCES) $(EXECUTABLE)
15 | 
16 | $(EXECUTABLE) : $(OBJECTS) Makefile
17 | 	$(CC) $(ARCH) $(LDFLAGS) $(OBJECTS) -o $@
18 | 
19 | .cpp.o:
20 | 	$(CC) $(CFLAGS) $< -o $@


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/README.md:
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1 | WebcamCodeScanner
2 | =================
3 | 
4 | Scan and read QR / Barcodes in real time
5 | 
6 | [Blog Post](http://blog.ayoungprogrammer.com/2014/04/real-time-qr-code-bar-code-detection.html)
7 | 


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/main:
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https://raw.githubusercontent.com/ayoungprogrammer/WebcamCodeScanner/c287eece9e6a7963f99ff32e8ccd38465b1a1634/main


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/main.cpp:
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 1 | #include <opencv2/highgui/highgui.hpp>
 2 | #include <opencv2/imgproc/imgproc.hpp>
 3 | #include <zbar.h>
 4 | #include <iostream>
 5 | 
 6 | using namespace cv;
 7 | using namespace std;
 8 | using namespace zbar;
 9 | 
10 | //g++ main.cpp /usr/local/include/ /usr/local/lib/ -lopencv_highgui.2.4.8 -lopencv_core.2.4.8
11 | 
12 | int main(int argc, char* argv[])
13 | {
14 |     VideoCapture cap(0); // open the video camera no. 0
15 | 
16 |    // cap.set(CV_CAP_PROP_FRAME_WIDTH,800);
17 |    // cap.set(CV_CAP_PROP_FRAME_HEIGHT,640);
18 | 
19 |     if (!cap.isOpened())  // if not success, exit program
20 |     {
21 |         cout << "Cannot open the video cam" << endl;
22 |         return -1;
23 |     }
24 | 
25 | 
26 |     ImageScanner scanner;  
27 |       scanner.set_config(ZBAR_NONE, ZBAR_CFG_ENABLE, 1);  
28 | 
29 |    double dWidth = cap.get(CV_CAP_PROP_FRAME_WIDTH); //get the width of frames of the video
30 |    double dHeight = cap.get(CV_CAP_PROP_FRAME_HEIGHT); //get the height of frames of the video
31 | 
32 |     cout << "Frame size : " << dWidth << " x " << dHeight << endl;
33 | 
34 |     namedWindow("MyVideo",CV_WINDOW_AUTOSIZE); //create a window called "MyVideo"
35 | 
36 |     while (1)
37 |     {
38 |         Mat frame;
39 | 
40 |         bool bSuccess = cap.read(frame); // read a new frame from video
41 | 
42 |          if (!bSuccess) //if not success, break loop
43 |         {
44 |              cout << "Cannot read a frame from video stream" << endl;
45 |              break;
46 |         }
47 | 
48 |         Mat grey;
49 |         cvtColor(frame,grey,CV_BGR2GRAY);
50 | 
51 |         int width = frame.cols;  
52 |         int height = frame.rows;  
53 |         uchar *raw = (uchar *)grey.data;  
54 |         // wrap image data  
55 |         Image image(width, height, "Y800", raw, width * height);  
56 |         // scan the image for barcodes  
57 |         int n = scanner.scan(image);  
58 |         // extract results  
59 |         for(Image::SymbolIterator symbol = image.symbol_begin();  
60 |         symbol != image.symbol_end();  
61 |         ++symbol) {  
62 |                 vector<Point> vp;  
63 |         // do something useful with results  
64 |         cout << "decoded " << symbol->get_type_name()  << " symbol \"" << symbol->get_data() << '"' <<" "<< endl;  
65 |            int n = symbol->get_location_size();  
66 |            for(int i=0;i<n;i++){  
67 |                 vp.push_back(Point(symbol->get_location_x(i),symbol->get_location_y(i))); 
68 |            }  
69 |            RotatedRect r = minAreaRect(vp);  
70 |            Point2f pts[4];  
71 |            r.points(pts);  
72 |            for(int i=0;i<4;i++){  
73 |                 line(frame,pts[i],pts[(i+1)%4],Scalar(255,0,0),3);  
74 |            }  
75 |            //cout<<"Angle: "<<r.angle<<endl;  
76 |         }  
77 | 
78 |         imshow("MyVideo", frame); //show the frame in "MyVideo" window
79 | 
80 |         if (waitKey(30) == 27) //wait for 'esc' key press for 30ms. If 'esc' key is pressed, break loop
81 |        {
82 |             cout << "esc key is pressed by user" << endl;
83 |             break; 
84 |        }
85 |     }
86 |     return 0;
87 | 
88 | }


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/main.o:
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https://raw.githubusercontent.com/ayoungprogrammer/WebcamCodeScanner/c287eece9e6a7963f99ff32e8ccd38465b1a1634/main.o


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