Legacy ImageMagick Discussions Archive

try using -threshold and -morphology convert test.png -threshold 75% -morphology open square:1 result.png see http://www.imagemagick.org/Usage/morphology/ Or try multiple iterations of -despeckle (and possible threshold afterwards) convert test.png -despeckle -despeckle -despeckle -despeckle ...

I've developed a script to process scanned documents that carry a QR code on them. When the original is scanned, I apply median 2 and noise 2 and the QR decoding library (zxing more used for android), and normally it decodes ok. The problem is when somebody scan a not original document. I've tried ...