Open GoogleCodeExporter opened 8 years ago
I have found other collateral effect of this problem. It causes some barcodes
to be corrupted, since some bars are black rectangles, they become with white
inside, instead of a full black.
Original comment by rei...@gmail.com
on 11 Jul 2012 at 10:56
The implementation of the Bradley thresholding algorithm in AForge.NET
framework just follows the referenced publication. Nothing more or less - just
implementation of the algorithm as in paper.
You may try playing with parameters of the algorithm (WindowSize and
PixelBrightnessDifferenceLimit) to see if those make any difference.
Also you are welcome to read the referenced paper to get more understanding of
the algorithm.
However, if you cannot find anything wrong in the implementation itself, then
there is not much we can do. If there is a problem in the algorithm itself,
then it is not AForge.NET framework's fault.
So, if you find a bug/error in the implementation, then we can fix it. If not,
then you may search/suggest another algorithm.
Original comment by andrew.k...@gmail.com
on 11 Jul 2012 at 11:18
Andrew, Thanks for your feedback. I understood your point, but I don't have
enough knowledge to say your implementation of the Bradley algorithm is correct
or not. The only thing that I know it is I can't use this because I have black
rectangles and black corners in the image and barcode I can't corrupt.
I have tried to play with PixelBrightnessDifferenceLimit and couldn't see any
improvement. Instead of Bradley, I am using OTSU now and it is fine to my
needs.
Thank you very much for such great job... I hope you can find time to continue
to improve this API.
regards,
Robson Reis
Original comment by rei...@gmail.com
on 11 Jul 2012 at 5:54
Original issue reported on code.google.com by
rei...@gmail.com
on 10 Jul 2012 at 8:00Attachments: