Please be careful with the Otsu algorithm, because we use only one threshold value for whole image.
No method is best for all cases J. You should do and compare the results between Otsu algorithm and adaptive threshold algorithm. About adaptive threshold algorithm, you can be based on integral image (known by Paul Viola et. al) to increase performance. Cong. From: tesseract-ocr@googlegroups.com [mailto:tesseract-ocr@googlegroups.com] On Behalf Of Saurabh Gandhi Sent: Wednesday, March 02, 2011 3:34 PM To: tesseract-ocr@googlegroups.com Cc: Bikash Bag Subject: Re: image binarization You can use Otsu's binarisation algorithm: http://www.sas.bg/code-snippets/image-binarization-the-otsu-method.html -- Regards, Saurabh Gandhi On Wed, Mar 2, 2011 at 1:45 PM, Bikash Bag <bikash...@gmail.com> wrote: Hi, I am new to OCR, can anyone please tell me a good image binarization algorithm. regards, bikash -- You received this message because you are subscribed to the Google Groups "tesseract-ocr" group. To post to this group, send email to tesseract-ocr@googlegroups.com. To unsubscribe from this group, send email to tesseract-ocr+unsubscr...@googlegroups.com <mailto:tesseract-ocr%2bunsubscr...@googlegroups.com> . For more options, visit this group at http://groups.google.com/group/tesseract-ocr?hl=en. -- You received this message because you are subscribed to the Google Groups "tesseract-ocr" group. To post to this group, send email to tesseract-ocr@googlegroups.com. To unsubscribe from this group, send email to tesseract-ocr+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/tesseract-ocr?hl=en. -- You received this message because you are subscribed to the Google Groups "tesseract-ocr" group. To post to this group, send email to tesseract-ocr@googlegroups.com. To unsubscribe from this group, send email to tesseract-ocr+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/tesseract-ocr?hl=en.
