Zxing.Net中GenericMultipleBarcodeReader的自动旋转选项

Question

How can I set the hint 'AutoRotate' for 'GenericMultipleBarcodeReader' in Zxing.net. I have set Try_Harder = true. But no results for detecting multiple 1d/2d barcodes from a rotated image. If the image is aligned properly it gives the results.

Edit: In 'GenericMultipleBarcodeReader' I am using 'ByQuadrantReader'. This could detect barcodes and QR codes from properly aligned images. For a rotated image it could not find anything.

MultiFormatReader multiReader = new MultiFormatReader();
ZXing.Multi.GenericMultipleBarcodeReader byquadReader = new ZXing.Multi.GenericMultipleBarcodeReader(new ByQuadrantReader(multiReader));              
Dictionary<DecodeHintType, object> hints = new Dictionary<DecodeHintType, object>();
hints.Add(DecodeHintType.TRY_HARDER, true);
List<BarcodeFormat> formats = new List<BarcodeFormat>();
formats.Add(BarcodeFormat.All_1D);
formats.Add(BarcodeFormat.QR_CODE);
hints.Add(DecodeHintType.POSSIBLE_FORMATS, formats);
****
byquadresults = byquadReader.decodeMultiple(binaryBitmap, hints);

Could any one please help me.

Answer 1

AutoRotate can only be used with the BarcodeReader class.

     var bitmap = (Bitmap)Bitmap.FromFile("<path to your image file>");
     var reader = new BarcodeReader
     {
        AutoRotate = true,
        Options = new DecodingOptions
        {
           TryHarder = true,
           PossibleFormats = new List<BarcodeFormat>
           {
              BarcodeFormat.All_1D,
              BarcodeFormat.QR_CODE
           }
        }
     };

     var results = reader.DecodeMultiple(bitmap);

If you want to use the ByQuadrantReader you have to replace the line

var reader = new BarcodeReader...

with

var reader = new BarcodeReader(new ByQuadrantReader(new MultiFormatReader()), null, null)...