I tried doing the threshold method but it screws up the ice.png text. On Monday, February 24, 2020 at 1:33:06 PM UTC+2, Lorenzo Blz wrote: > > Do a threshold (otsu), count the white and black pixels, this will tell > you if you have white text on dark background or the opposite. > If necessary, negate the image so to have a dark text on bright background. > > The images are very small, you want al least 35/50px. Try to have them > larger if possible otherwise upscale might help. Sharpening or other steps > might help before the threshold. > > > Lorenzo > > > Il giorno dom 23 feb 2020 alle ore 12:29 Jonathan Dahan <[email protected] > <javascript:>> ha scritto: > >> Hi, I would love to know which type of custom preprocessing these images >> would go through in order to be the best to successfully read them. Note >> that the filter/preprocess needs to be generic which means to work across >> all four images. >> >> https://i.stack.imgur.com/4N62x.png >> https://i.stack.imgur.com/3upPM.png >> https://i.stack.imgur.com/WcrGU.png >> https://i.stack.imgur.com/ymhv6.png >> >> Thanks. >> >> -- >> You received this message because you are subscribed to the Google Groups >> "tesseract-ocr" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected] <javascript:>. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/tesseract-ocr/05373fc0-d380-4aaa-a2ef-6d9538601ab0%40googlegroups.com >> >> <https://groups.google.com/d/msgid/tesseract-ocr/05373fc0-d380-4aaa-a2ef-6d9538601ab0%40googlegroups.com?utm_medium=email&utm_source=footer> >> . >> >
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