#include <opencv2/opencv.hpp>

#include <zbar.h>

using namespace cv;

using namespace std;

using namespace zbar;

typedef struct

{

string type;

string data;

vector <Point> location;

} decodedObject;

// Find and decode barcodes and QR codes

void decode(Mat &im, vector<decodedObject>&decodedObjects)

{

// Create zbar scanner

ImageScanner scanner;

// Configure scanner

scanner.set_config(ZBAR_NONE, ZBAR_CFG_ENABLE, 1);

// Convert image to grayscale

Mat imGray;

cvtColor(im, imGray,CV_BGR2GRAY);

// Wrap image data in a zbar image

Image image(im.cols, im.rows, "Y800", (uchar *)imGray.data, im.cols * im.rows);

// Scan the image for barcodes and QRCodes

int n = scanner.scan(image);

// Print results

for(Image::SymbolIterator symbol = image.symbol_begin(); symbol != image.symbol_end(); ++symbol)

{

decodedObject obj;

obj.type = symbol->get_type_name();

obj.data = symbol->get_data();

// Print type and data

cout << "Type : " << obj.type << endl;

cout << "Data : " << obj.data << endl << endl;

// Obtain location

for(int i = 0; i< symbol->get_location_size(); i++)

{

obj.location.push_back(Point(symbol->get_location_x(i),symbol->get_location_y(i)));

}

decodedObjects.push_back(obj);

}

}

// Display barcode and QR code location

void display(Mat &im, vector<decodedObject>&decodedObjects)

{

// Loop over all decoded objects

for(int i = 0; i < decodedObjects.size(); i++)

{

vector<Point> points = decodedObjects[i].location;

vector<Point> hull;

// If the points do not form a quad, find convex hull

if(points.size() > 4)

convexHull(points, hull);

else

hull = points;

// Number of points in the convex hull

int n = hull.size();

for(int j = 0; j < n; j++)

{

line(im, hull[j], hull[ (j+1) % n], Scalar(255,0,0), 3);

}

}

// Display results

imshow("Results", im);

waitKey(0);

}

int main(int argc, char* argv[])

{

// Read image

Mat im = imread("zbar-test.jpg");

// Variable for decoded objects

vector<decodedObject> decodedObjects;

// Find and decode barcodes and QR codes

decode(im, decodedObjects);

// Display location

display(im, decodedObjects);

return EXIT_SUCCESS;

}