Why is a black background a problem? One of the advertised features of tesseract is that it works equally well for black-on-white and white-on-black text.
Marcus On Tuesday, December 4, 2012 11:11:36 AM UTC+1, zdenop wrote: > > Search forum. I remember discussion about similar topic. > AFAIR: tesseract has problem with letter(symbol) that consists of several > not connected parts (e.g. dots, lines) - solution should be to preprocess > image (blur). > > Generally: black background is problem. Quality of image is too low (JPEG, > quality: 75), there is no information about DPI... Anyway this "LED" font > is not standard font, so maybe training will be need. > > -- > Zdenko > > On Tue, Dec 4, 2012 at 12:43 AM, mike oldfield > <[email protected]<javascript:> > > wrote: > >> >> <https://lh5.googleusercontent.com/-Ly6oR_Rmkag/UL04-iH5XaI/AAAAAAAAAAU/J-T592D8834/s1600/1.jpg> >> Hello >> >> I`d like to recognize LED-like numbers/digits. >> I attached image (jpg, 680x320, brightness 65%, contrast 100%). >> Is there any libraries or presets to decode these digits? For example >> googledocuments conversion and free-ocr.com doesn`t work. >> >> >> >> >> >> -- >> 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]<javascript:> >> To unsubscribe from this group, send email to >> [email protected] <javascript:> >> 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 [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
