eddiec, use mogrify to convert the image to grayscale instead of plain black- white.
On Jun 16, 10:12 pm, Ray Smith <[email protected]> wrote: > Tesseract still threshold before recognition. You need a really good > adaptive thresholding, possibly combined with prescaling.There would have to > be a lot of major changes to support "native" greyscale recognition. > Ray. > > On Sun, Jun 14, 2009 at 1:25 PM, nguyenq <[email protected]> wrote: > > > You can try VietOCR, a frontend program to Tesseract OCR engine. > > >http://vietocr.sf.net > > > On Jun 14, 8:00 am, eddiec <[email protected]> wrote: > > > Hi, > > > > I have some scanned images I am trying to OCR. The images are > > > grayscale and scanned from microfilm. The packages I have tried to OCR > > > the images with first convert the images to black and white and then > > > OCR. The problem is that the B&W images are far less legible than the > > > grayscale images and therefore the OCR has a low accuracy rate. > > > > Is there any way to OCR a grayscale image natively? > > > > TIA > > > > eddiec :-) --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "tesseract-ocr" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/tesseract-ocr?hl=en -~----------~----~----~----~------~----~------~--~---
