void QRScanner::init(char *raw, int width,int height){
// create a reader
ImageScanner scanner;
// configure the reader
scanner.set_config(ZBAR_NONE, ZBAR_CFG_ENABLE, 1);
myImage = new Image(width, height, "Y800", raw, width * height);
// scan the image for barcodes
numLines = scanner.scan(*myImage);
}
/**
* This is a (modified) test program written by Michael Young
* (https://github.com/ayoungprogrammer/WebcamCodeScanner). It was modified to
* work with the Raspicam.
*/
int main(int argc, char* argv[])
{
PiCamera cam; // open the video camera no. 0
ImageScanner scanner;
scanner.set_config(ZBAR_NONE, ZBAR_CFG_ENABLE, 1);
namedWindow("MyVideo",CV_WINDOW_AUTOSIZE); //create a window called "MyVideo"
while (1)
{
Mat frame = cam.Snap();
Mat grey;
cvtColor(frame,grey,CV_BGR2GRAY);
int width = frame.cols;
int height = frame.rows;
uchar *raw = (uchar *)grey.data;
// wrap image data
zbar::Image image(width, height, "Y800", raw, width * height);
// scan the image for barcodes
int n = scanner.scan(image);
// extract results
for(Image::SymbolIterator symbol = image.symbol_begin();
symbol != image.symbol_end();
++symbol) {
vector<Point> vp;
// do something useful with results
cout << "decoded " << symbol->get_type_name() << " symbol \"" << symbol->get_data() << '"' <<" "<< endl;
int n = symbol->get_location_size();
for(int i=0;i<n;i++){
vp.push_back(Point(symbol->get_location_x(i),symbol->get_location_y(i)));
}
RotatedRect r = minAreaRect(vp);
Point2f pts[4];
r.points(pts);
for(int i=0;i<4;i++){
line(frame,pts[i],pts[(i+1)%4],Scalar(255,0,0),3);
}
}
imshow("MyVideo", frame); //show the frame in "MyVideo" window
if (waitKey(30) == 27) //wait for 'esc' key press for 30ms. If 'esc' key is pressed, break loop
{
cout << "esc key is pressed by user" << endl;
break;
}
}
return 0;
}
MainWindow::MainWindow(QWidget *parent) :
QMainWindow(parent),
ui(new Ui::MainWindow)
{
ui->setupUi(this);
ImageScanner scanner;
//scanner.set_config(ZBAR_NONE, ZBAR_CFG_ENABLE, 1);
scanner.set_config(ZBAR_QRCODE, ZBAR_CFG_ENABLE, 1);
QImage qimage;
bool imgLoaded = qimage.load("C:/Users/emi/Dropbox/projekts/qt/zBar_32bit/codePictures/qrCode3.png");
if(imgLoaded == false)
{
qDebug() << "error loading image";
}
QImage convertedImage = qimage.convertToFormat(QImage::Format_Grayscale8,Qt::MonoOnly);
int width = convertedImage.width();
int height= convertedImage.height();
unsigned char * data = convertedImage.bits();
Image image(width, height, "Y800" , data, width*height);
// Image image(width, height, "GRAY" , data, width*height);
// scan the image for barcodes
int n = scanner.scan(image);
// extract results
for(Image::SymbolIterator symbol = image.symbol_begin();
symbol != image.symbol_end();
++symbol)
{
// do something useful with results
qDebug() << "decoded " << QString::fromStdString(symbol->get_type_name())
<< " symbol \"" << QString::fromStdString(symbol->get_data()) << '"' << endl;
}
// clean up
image.set_data(NULL, 0);
}
QString ZBarReaderTest::decode(const QImage &image)
{
Image zbarImg(image.width(), image.height(), "Y800", image.bits(), image.bytesPerLine() * image.height());
QString line;
ImageScanner scanner;
scanner.set_config(ZBAR_NONE, ZBAR_CFG_ENABLE, 1);
scanner.scan(zbarImg);
SymbolSet s = scanner.get_results();
int resSize = s.get_size();
if (resSize > 0) {
mTotalRead++;
for (SymbolIterator symbol = scanner.get_results().symbol_begin(); symbol != scanner.get_results().symbol_end(); ++symbol) {
if (QString::compare("QR-Code ", QString(symbol->get_type_name().data()).trimmed()))
line += " | " + QString(symbol->get_data().data()).replace("\n", "<br>");
}
}
return line;
}
int main (int argc, char **argv)
{
unsigned long nowTime = getCurrentTime();
// std::cout<<"nowTime: "<<getCurrentTime()<<"\n";
if(argc < 2) return(1);
// create a reader
ImageScanner scanner;
// // configure the reader
scanner.set_config(ZBAR_NONE, ZBAR_CFG_ENABLE, 1);
/* obtain image data */
int width = 1920, height = 1080;
char *raw = (char*)malloc(width*height);
get_yuv_data(argv[1], width, height, raw);
// wrap image data
Image image(width, height, "Y800", raw, width * height);
// scan the image for barcodes
int n = scanner.scan(image);
if(0==n||-1==n)
{
printf("no symbols were found or -1 if an error occurs");
return -1;
}
// extract results
for(Image::SymbolIterator symbol = image.symbol_begin();
symbol != image.symbol_end();
++symbol)
{
// do something useful with results
cout << "decoded " << symbol->get_type_name()
<< " symbol \"" << symbol->get_data() << '"' << endl;
}
// clean up
image.set_data(NULL, 0);
free(raw);
std::cout<<getCurrentTime()-nowTime<<"\n";
return(0);
}
QString ZBarReaderTest::decodeIterative(const QImage &image)
{
Image zbarImg(image.width(), image.height(), "Y800", image.bits(), image.bytesPerLine() * image.height());
QString line;
ImageScanner scanner;
scanner.set_config(ZBAR_NONE, ZBAR_CFG_ENABLE, 1);
scanner.scan(zbarImg);
SymbolSet s = scanner.get_results();
int resSize = s.get_size();
if (resSize == 0) {
int fib1 = 1, fib2 = 1;
int fib;
for (fib = fib1 + fib2; fib < 11; fib = fib1 + fib2) {
int roiWidth = (1. / fib) * image.width(), roiHeight = (1. / fib) * image.height();
for (int x = 0; x < image.width(); x += 50) {
for (int y = 0; y < image.height(); y += 50) {
// qDebug () << "roiWidth" << roiWidth << "roiHeight" << roiHeight;
QImage img = image.copy(x, y, roiWidth, roiHeight);
Image i(img.width(), img.height(), "Y800", img.bits(), img.bytesPerLine() * img.height());
scanner.scan(i);
}
}
int temp = fib1;
fib1 = fib;
fib2 = temp;
}
}
SymbolSet s2 = scanner.get_results();
resSize = s2.get_size();
if (resSize > 0) {
mTotalRead++;
for (SymbolIterator symbol = scanner.get_results().symbol_begin(); symbol != scanner.get_results().symbol_end(); ++symbol) {
if (QString::compare("QR-Code ", QString(symbol->get_type_name().data()).trimmed()))
line += " | " + QString(symbol->get_data().data()).replace("\n", "<br>");
}
}
return line;
}
void code_qr::decoder(Mat& img_qr, string& message){
ImageScanner scanner;
scanner.set_config(ZBAR_NONE, ZBAR_CFG_ENABLE, 1);
Mat img;
img_qr.copyTo(img);
//if( !img.data ){
//return 0;
//}
Mat imgout;
cvtColor(img,imgout,CV_GRAY2RGB);
int width = img.cols;
int height = img.rows;
uchar *raw = (uchar *)img.data;
Image image(width, height, "Y800", raw, width * height);
int n = scanner.scan(image);
for(Image::SymbolIterator symbol = image.symbol_begin(); symbol != image.symbol_end(); ++symbol) {
message = symbol->get_data();
//cout << "decoded " << symbol->get_type_name()<< " symbol \"" << symbol->get_data() << '"' <<" "<< endl;
}
image.set_data(NULL, 0);
}
int main(int argc, char **argv) {
int cam_idx = 0;
if (argc == 2) {
cam_idx = atoi(argv[1]);
}
VideoCapture cap(cam_idx);
if (!cap.isOpened()) {
cerr << "Could not open camera." << endl;
exit(EXIT_FAILURE);
}
//cap.set(CV_CAP_PROP_FRAME_WIDTH, 640);
//cap.set(CV_CAP_PROP_FRAME_HEIGHT, 480);
namedWindow("captured", CV_WINDOW_AUTOSIZE);
// Create a zbar reader
ImageScanner scanner;
// Configure the reader
scanner.set_config(ZBAR_NONE, ZBAR_CFG_ENABLE, 1);
for (;;) {
// Capture an OpenCV frame
cv::Mat frame, frame_grayscale;
cap >> frame;
// Convert to grayscale
cvtColor(frame, frame_grayscale, CV_BGR2GRAY);
// Obtain image data
int width = frame_grayscale.cols;
int height = frame_grayscale.rows;
uchar *raw = (uchar *)(frame_grayscale.data);
// Wrap image data
Image image(width, height, "Y800", raw, width * height);
// Scan the image for barcodes
//int n = scanner.scan(image);
scanner.scan(image);
// Extract results
int counter = 0;
for (Image::SymbolIterator symbol = image.symbol_begin(); symbol != image.symbol_end(); ++symbol) {
time_t now;
tm *current;
now = time(0);
current = localtime(&now);
// do something useful with results
cout << "[" << current->tm_hour << ":" << current->tm_min << ":" << setw(2) << setfill('0') << current->tm_sec << "] " << counter << " "
<< "decoded " << symbol->get_type_name()
<< " symbol \"" << symbol->get_data() << '"' << endl;
//cout << "Location: (" << symbol->get_location_x(0) << "," << symbol->get_location_y(0) << ")" << endl;
//cout << "Size: " << symbol->get_location_size() << endl;
// Draw location of the symbols found
if (symbol->get_location_size() == 4) {
//rectangle(frame, Rect(symbol->get_location_x(i), symbol->get_location_y(i), 10, 10), Scalar(0, 255, 0));
line(frame, Point(symbol->get_location_x(0), symbol->get_location_y(0)), Point(symbol->get_location_x(1), symbol->get_location_y(1)), Scalar(0, 255, 0), 2, 8, 0);
line(frame, Point(symbol->get_location_x(1), symbol->get_location_y(1)), Point(symbol->get_location_x(2), symbol->get_location_y(2)), Scalar(0, 255, 0), 2, 8, 0);
line(frame, Point(symbol->get_location_x(2), symbol->get_location_y(2)), Point(symbol->get_location_x(3), symbol->get_location_y(3)), Scalar(0, 255, 0), 2, 8, 0);
line(frame, Point(symbol->get_location_x(3), symbol->get_location_y(3)), Point(symbol->get_location_x(0), symbol->get_location_y(0)), Scalar(0, 255, 0), 2, 8, 0);
}
// Get points
/*for (Symbol::PointIterator point = symbol.point_begin(); point != symbol.point_end(); ++point) {
cout << point << endl;
} */
counter++;
}
// Show captured frame, now with overlays!
imshow("captured", frame);
// clean up
image.set_data(NULL, 0);
waitKey(30);
}
return 0;
}
JNIEXPORT void JNICALL Java_com_example_qr_MainActivity_nativeDetect(
JNIEnv * jenv, jclass, jlong imageGray) {
LOGD(
"Java_org_opencv_samples_facedetect_DetectionBasedTracker_nativeDetect enter");
try {
vector<Rect> RectFaces;
// ((DetectionBasedTracker*)thiz)->process(*((Mat*)imageGray));
// ((DetectionBasedTracker*)thiz)->getObjects(RectFaces);
// vector_Rect_to_Mat(RectFaces, *((Mat*)faces));
Mat img = *((Mat*) imageGray);
Mat imgout;
cvtColor(img, imgout, CV_GRAY2RGB);
int width = img.cols;
int height = img.rows;
uchar *raw = (uchar *) img.data;
// uchar *raw = (uchar *) imageGray;
// wrap image data
Image image(width, height, "Y800", raw, width * height);
// scan the image for barcodes
ImageScanner scanner;
scanner.set_config(ZBAR_NONE, ZBAR_CFG_ENABLE, 1);
int n = scanner.scan(image);
// extract results
for (Image::SymbolIterator symbol = image.symbol_begin();
symbol != image.symbol_end(); ++symbol) {
vector<Point> vp;
// do something useful with results
cout << "decoded " << symbol->get_type_name() << " symbol \""
<< symbol->get_data() << '"' << " " << endl;
int n = symbol->get_location_size();
for (int i = 0; i < n; i++) {
vp.push_back(
Point(symbol->get_location_x(i),
symbol->get_location_y(i)));
}
RotatedRect r = minAreaRect(vp);
Point2f pts[4];
r.points(pts);
for (int i = 0; i < 4; i++) {
line(imgout, pts[i], pts[(i + 1) % 4], Scalar(255, 0, 0), 3);
}
cout << "Angle: " << r.angle << endl;
}
imshow("imgout.jpg", imgout);
// clean up
image.set_data(NULL, 0);
waitKey();
} catch (cv::Exception& e) {
LOGD("nativeCreateObject caught cv::Exception: %s", e.what());
jclass je = jenv->FindClass("org/opencv/core/CvException");
if (!je)
je = jenv->FindClass("java/lang/Exception");
jenv->ThrowNew(je, e.what());
} catch (...) {
LOGD("nativeDetect caught unknown exception");
jclass je = jenv->FindClass("java/lang/Exception");
jenv->ThrowNew(je,
"Unknown exception in JNI code DetectionBasedTracker.nativeDetect()");
}
LOGD(
"Java_org_opencv_samples_facedetect_DetectionBasedTracker_nativeDetect exit");
}