c# - Convert color scan image to grayscale image for PDF417 decoder xzing -
i'm decoding pdf417 2d barcode in scanned image using zxing.net library. far, have found gray-scale scanned image(8bit depth) working fine , color scanned image(24 bit depth) not working. tried covert color scanned image gray-scale image using below method.
private bitmapsource convertgray(bitmapsource bi) { formatconvertedbitmap newformatedbitmapsource = new formatconvertedbitmap(); newformatedbitmapsource.begininit(); newformatedbitmapsource.source = bi; newformatedbitmapsource.destinationformat = pixelformats.gray8; newformatedbitmapsource.endinit(); return newformatedbitmapsource; }
but, zxing.net not detect pdf417 2d barcode in converted gray-scale image. how can convert color scanned image gray-scale image same format gray-scale scanned image.
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