public string DecodeQrImage(string fileName)
{
System.Drawing.Image img = System.Drawing.Image.FromFile(fileName);
Bitmap bmap = new Bitmap(img);
LuminanceSource source = new RGBLuminanceSource(bmap, bmap.Width, bmap.Height);
BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));
Result result = new MultiFormatReader().Decode(bitmap);
return result.Text;
}
private Result DecodeInternal(BinaryBitmap image)
{
int size = readers.Count;
for (int i = 0; i < size; i++)
{
Reader reader = (Reader)readers[i];
try
{
return(reader.Decode(image, hints));
}
catch (ReaderException)
{
// continue
}
}
throw ReaderException.Instance;
}
private Result DecodeInternal(BinaryBitmap image)
{
int size = readers.Count;
for (int i = 0; i < size; i++)
{
Reader reader = (Reader) readers[i];
try
{
return reader.Decode(image, hints);
}
catch (ReaderException)
{
// continue
}
}
throw ReaderException.Instance;
}
/// <summary> Decode an image using the state set up by calling setHints() previously. Continuous scan
/// clients will get a <b>large</b> speed increase by using this instead of decode().
///
/// </summary>
/// <param name="image">The pixel data to decode
/// </param>
/// <returns> The contents of the image
/// </returns>
/// <throws> ReaderException Any errors which occurred </throws>
public Result DecodeWithState(BinaryBitmap image)
{
// Make sure to set up the default state so we don't crash
if (readers == null)
{
Hints = null;
}
return DecodeInternal(image);
}
/// <summary> Decode an image using the hints provided. Does not honor existing state.
///
/// </summary>
/// <param name="image">The pixel data to decode
/// </param>
/// <param name="hints">The hints to use, clearing the previous state.
/// </param>
/// <returns> The contents of the image
/// </returns>
/// <throws> ReaderException Any errors which occurred </throws>
public Result Decode(BinaryBitmap image, System.Collections.Hashtable hints)
{
Hints = hints;
return DecodeInternal(image);
}
/// <summary> This version of decode honors the intent of Reader.decode(BinaryBitmap) in that it
/// passes null as a hint to the decoders. However, that makes it inefficient to call repeatedly.
/// Use setHints() followed by decodeWithState() for continuous scan applications.
///
/// </summary>
/// <param name="image">The pixel data to decode
/// </param>
/// <returns> The contents of the image
/// </returns>
/// <throws> ReaderException Any errors which occurred </throws>
public Result Decode(BinaryBitmap image)
{
Hints = null;
return DecodeInternal(image);
}
/// <summary> Decode an image using the hints provided. Does not honor existing state.
///
/// </summary>
/// <param name="image">The pixel data to decode
/// </param>
/// <param name="hints">The hints to use, clearing the previous state.
/// </param>
/// <returns> The contents of the image
/// </returns>
/// <throws> ReaderException Any errors which occurred </throws>
public Result Decode(BinaryBitmap image, System.Collections.Hashtable hints)
{
Hints = hints;
return(DecodeInternal(image));
}
/// <summary> This version of decode honors the intent of Reader.decode(BinaryBitmap) in that it
/// passes null as a hint to the decoders. However, that makes it inefficient to call repeatedly.
/// Use setHints() followed by decodeWithState() for continuous scan applications.
///
/// </summary>
/// <param name="image">The pixel data to decode
/// </param>
/// <returns> The contents of the image
/// </returns>
/// <throws> ReaderException Any errors which occurred </throws>
public Result Decode(BinaryBitmap image)
{
Hints = null;
return(DecodeInternal(image));
}
