/// <summary>
/// This Methode decodes the given Image and updates the outputs and presentation.
/// </summary>
/// <param name="image"></param>
public void ProcessImage(byte[] image)
{
DecoderItem decoderResult = null;
//if ocr is selected, use the orcdecoder, else use the codetypeHandler
decoderResult = settings.DecoderType == VisualDecoderSettings.DecoderTypes.OCR
? ORCDecoder.Decode(image, settings)
: codeTypeHandler[settings.CodeType].Decode(image, settings);
if (decoderResult != null) //input is valid and has been decoded
{
//update Presentation
presentation.Dispatcher.BeginInvoke(DispatcherPriority.Normal, (SendOrPostCallback)(state =>
{
try
{
presentation.SetImages(decoderResult.BitmapWithMarkedCode);
presentation.SetData(decoderResult.CodePayload, decoderResult.CodeType);
}
catch (Exception e)
{
GuiLogMessage(e.Message, NotificationLevel.Error);
}
}), null);
//update output
OutputData = decoderResult.CodePayload;
OnPropertyChanged("OutputData");
//update Progress
ProgressChanged(1, 1);
codeFound = true;
}
else
{
//reset metadata and set image
presentation.Dispatcher.BeginInvoke(DispatcherPriority.Normal, (SendOrPostCallback)(state =>
{
try
{
presentation.ClearPresentation();
presentation.SetImages(PictureInput);
}
catch (Exception e)
{
GuiLogMessage(e.Message, NotificationLevel.Error);
}
}), null);
}
}
public override DecoderItem Decode(byte[] input, VisualDecoderSettings settings)
{
var result = new DecoderItem();
var language = settings.OCRLanguage.ToString();
//use eng if the user dont know the language
if (language.Equals(VisualDecoderSettings.OCRLanguages.unkown.ToString()))
{
language = VisualDecoderSettings.OCRLanguages.eng.ToString();
}
using (var ocr = new tessnet2.Tesseract()){
try
{
ocr.Init(TessractData, language, settings.NumericMode);
List <tessnet2.Word> r1 = ocr.DoOCR(ByteArrayToImage(input), Rectangle.Empty);
//aggregate resultTest
string resultText = "";
int lc = tessnet2.Tesseract.LineCount(r1);
for (int i = 0; i < lc; i++)
{
resultText += tessnet2.Tesseract.GetLineText(r1, i) + "\n";
}
//fill result
result.CodePayload = resultText;
result.CodeType = "none";
result.BitmapWithMarkedCode = input;
ocr.Clear();
}
catch (Exception) // well, the ocr lib sucks... it sometimes trows memory leaks.
// But it is the best opensource lib available.
{
}
}
return(result);
}
