public void ExplicitlyDetectAndDecode()
{
using var obj = new QRCodeDetector();
int x = 100;
int y = 200;
using var withQr = ImageWithQrCode(x, y, out int w, out int h);
using var pointsMat = new Mat();
ShowImagesWhenDebugMode(withQr);
bool detected = obj.Detect(withQr, out var points);
Assert.True(detected);
Assert.Equal(4, points.Length);
Assert.Equal(102, points[0].X);
Assert.Equal(201, points[0].Y);
Assert.Equal(199, points[1].X);
Assert.Equal(201, points[1].Y);
Assert.Equal(199, points[2].X);
Assert.Equal(299, points[2].Y);
Assert.Equal(102, points[3].X);
Assert.Equal(299, points[3].Y);
using var straightQrCode = new Mat();
obj.Decode(withQr, points);
var decodedString = obj.Decode(withQr, points, straightQrCode);
Assert.False(straightQrCode.Empty());
Assert.Equal("https://github.com/opencv/opencv", decodedString);
}
void OnNewSample(Frame frame)
{
if (isDetecting)
{
return;
}
using (var frameSet = frame.AsFrameSet())
{
using (var colorFrame = frameSet.ColorFrame)
{
if (colorFrame == null)
{
return;
}
// set isDetecting true to avoid crashes
isDetecting = true;
int cfWidth = colorFrame.Width;
int cfHeight = colorFrame.Height;
// transform realsense frame into cv mat format
using (var image = new Mat(cfHeight, cfWidth, MatType.CV_8UC3, colorFrame.Data))
{
using (qrCodeDetector = new QRCodeDetector())
{
// Show generated Image in separate window
// Window.ShowImages(image);
// check frame if qrcode is existing
bool detected = qrCodeDetector.Detect(image, out var points);
if (detected)
{
using (var straightQrCode = new Mat())
{
qrCodeDetector.Decode(image, points);
var decodedString = qrCodeDetector.Decode(image, points, straightQrCode);
if (!string.IsNullOrEmpty(decodedString))
{
if (decodedString == "tiger")
{
actionEventQueue.Enqueue("spawnTiger");
}
if (decodedString == "house")
{
actionEventQueue.Enqueue("spawnHouse");
}
}
}
}
isDetecting = false;
}
}
}
}
}
private string RecongizeQRCode(Mat mat)
{
Mat dstMat = new Mat();
QRCodeDetector QRdetecter = new QRCodeDetector();
bool res = QRdetecter.Detect(mat, dstMat); //检测
string str = QRdetecter.Decode(mat, dstMat); //解码
return(str);
}
