private void RecognizeButton_Click(object sender, System.EventArgs e)
{
try
{
string output = "";
TextView licensePlateTV = FindViewById <TextView>(Resource.Id.licensePlateTextview);
OpenALPR_Results results = OpenALPRInstance.Recognize(TestImagePath);
if (results.DidErrorOccur == false)
{
foreach (var rr in results.FoundLicensePlates)
{
output += "Best: " + rr.BestLicensePlate + "(" + rr.Confidence + "%)\n";
foreach (var rc in rr.OtherCandidates)
{
output += "- " + rc.LicensePlate + "(" + rc.Confidence + "%)\n";
}
}
}
else
{
output = results.Error.Message + ", " + results.Error.Stacktrace;
}
licensePlateTV.Text = output;
Toast.MakeText(this, output, ToastLength.Long).Show();
}
catch (Exception ex)
{
Toast.MakeText(this, ex.Message + ", " + ex.StackTrace, ToastLength.Long).Show();
}
}
private void StartCaptureSession()
{
sessionTask = Task.Factory.StartNew(async() =>
{
while (Interlocked.CompareExchange(ref sessionIsActive, ACTIVE, ACTIVE) == ACTIVE)
{
var imageBytes = await TakePhoto();
var file = SavePhoto(imageBytes);
var results = OpenALPRInstance.Recognize(file.AbsolutePath, 10);
string output = "";
if (results.DidErrorOccur == false)
{
foreach (var rr in results.FoundLicensePlates)
{
output += "Best: " + rr.BestLicensePlate + "(" + rr.Confidence + "%)\n";
ShowToast(output);
}
}
var delete = true;
if (delete)
{
System.IO.File.Delete(file.AbsolutePath);
}
}
});
}
public AlprKennzeichenEntity Recognize(string imagePath)
{
var result = new AlprKennzeichenEntity()
{
TimeStamp = DateTime.Now
};
try
{
if (System.IO.File.Exists(imagePath))
{
var recognitionResults = _openALPRInstance.Recognize(imagePath, 5);
if (!recognitionResults.DidErrorOccur)
{
result.FoundLicenses = new List <AlprKennzeichen>();
foreach (var rr in recognitionResults.FoundLicensePlates)
{
var foundPlate = new AlprKennzeichen()
{
LicensePlate = rr.BestLicensePlate, Confidence = rr.Confidence
};
result.FoundLicenses.Add(foundPlate);
}
}
else
{
result.ErrorOccured = true;
result.ErrorMessage = recognitionResults.Error.Message + ", " + recognitionResults.Error.Stacktrace;
}
}
else
{
result.ErrorOccured = true;
result.ErrorMessage = "Image-Datei wurde nicht gefunden";
}
}
catch (Exception ex)
{
result.ErrorOccured = true;
result.ErrorMessage = ex.Message;
}
return(result);
}