Use hough lines detector to detect the lines and draw a thick white line over them.
https://opencv-python-tutroals.readthedocs.io/en/latest/py_tutorials/py_imgproc/py_houghlines/py_houghlines.html Or use MSER to detect blobs of the appropriate size. https://answers.opencv.org/question/19015/how-to-use-mser-in-python/ https://stackoverflow.com/questions/40078625/opencv-mser-detect-text-areas-python Lorenzo Il giorno lun 16 nov 2020 alle ore 14:30 agentbond009 <kshitij1...@gmail.com> ha scritto: > Thanks Martin Läuter for the tutorial. But still i am gonna use > tesseract for this bc i don't think my PC will handle tenserflow. > > On Sunday, 15 November 2020 at 20:56:35 UTC+5:30 Martin Läuter wrote: > >> Hi, >> Someone did some (apparently) solid sudoku solving without tesseract, >> see https://blog.scottlogic.com/2020/01/03/webassembly-sudoku-solver.html. >> And the explanation is not bad either. >> Hope that helps, >> Martin. >> On Sunday, November 15, 2020 at 12:25:49 PM UTC+1 agentbond009 wrote: >> >>> [image: sudoku_output.jpg]yes i think the image is always the same >>> size but i am not able to cut out the columns(still figuring out ). Like >>> the image below is the result after thresholding. The problem is to reduce >>> the noise(all depends on quality) like for example if the pic is of bad >>> quality like this one, then i think the ocr will mess it up. >>> there are two pics for comparision. >>> On Friday, 6 November 2020 at 20:56:25 UTC+5:30 Jean-Marc Spaggiari >>> wrote: >>> >>>> Is the image always the same size? Can you cut the columns to remove >>>> them and keep just the numbers? >>>> >>>> Le ven. 6 nov. 2020 à 10:21, agentbond009 <kshit...@gmail.com> a >>>> écrit : >>>> >>>>> sorry for the late reply >>>>> I have done the thresholding part by using opencv and converted the >>>>> whole image to gray >>>>> and still stuck with recognising the digits. i was thinking to use >>>>> clear_border from skimage. >>>>> >>>>> On Friday, 30 October 2020 at 19:57:19 UTC+5:30 Jean-Marc Spaggiari >>>>> wrote: >>>>> >>>>>> Hi, >>>>>> >>>>>> Did you give it a try? >>>>>> >>>>>> Try to have the numbers in white in black in a withe background. Are >>>>>> you able to get each cell separately? >>>>>> >>>>>> JM >>>>>> >>>>>> Le ven. 30 oct. 2020 à 10:22, agentbond009 <kshit...@gmail.com> a >>>>>> écrit : >>>>>> >>>>>>> hello. I am working on a project, i was wondering if tesseract is an >>>>>>> OCR can it read the no.s from a sudoku. >>>>>>> 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 tesseract-oc...@googlegroups.com. >>>>>>> To view this discussion on the web visit >>>>>>> https://groups.google.com/d/msgid/tesseract-ocr/4abe9a73-9543-4a5b-b29e-a917874378f8n%40googlegroups.com >>>>>>> <https://groups.google.com/d/msgid/tesseract-ocr/4abe9a73-9543-4a5b-b29e-a917874378f8n%40googlegroups.com?utm_medium=email&utm_source=footer> >>>>>>> . >>>>>>> >>>>>> -- >>>>> 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 tesseract-oc...@googlegroups.com. >>>>> >>>> To view this discussion on the web visit >>>>> https://groups.google.com/d/msgid/tesseract-ocr/f2c178b6-5861-49be-8b23-3506f58c14edn%40googlegroups.com >>>>> <https://groups.google.com/d/msgid/tesseract-ocr/f2c178b6-5861-49be-8b23-3506f58c14edn%40googlegroups.com?utm_medium=email&utm_source=footer> >>>>> . >>>>> >>>> -- > 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 tesseract-ocr+unsubscr...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/tesseract-ocr/c66465e3-3640-4daa-9ae4-52ae2dbc8451n%40googlegroups.com > <https://groups.google.com/d/msgid/tesseract-ocr/c66465e3-3640-4daa-9ae4-52ae2dbc8451n%40googlegroups.com?utm_medium=email&utm_source=footer> > . > -- 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 tesseract-ocr+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/tesseract-ocr/CAMgOLLydD2SuhLcssM6vyhdj79KGy919gD5VCrvyLCwvVsNNFg%40mail.gmail.com.
