> Bizarrely, this simple code finds the page numbers at the bottom of the page perfectly happily, whereas the tesseract executable did not. This is good news - though confusing...
IIRC, the library has the psm default set to PSM_SINGLE_BLOCK = 6, while tesseract CLI sets psm to PSM_AUTO = 3 when you don't specify it explicitly, hence two different psm 'defaults', which may well explain the discrepancy you observe. On Sunday, July 14, 2024 at 9:20:59 AM UTC+2 ia...@idcl.co.uk wrote: > I have FINALLY got the c++ samples working in Visual Studio 2022. The code > I am using is the first tesseract sample code from here > <https://tesseract-ocr.github.io/tessdoc/Examples_C++.html> . > > Bizarrely, this simple code finds the page numbers at the bottom of the > page perfectly happily, whereas the tesseract executable did not. This is > good news - though confusing... > > Thanks to all for your input on this - I think for the moment I'm enough > ahead that I can call this issue closed. I will be seeing if I can > replicate this in c# which is a more productive environment for me than C++. > > Iain > > > On Sunday, July 14, 2024 at 7:47:47 AM UTC+1 Iain Downs wrote: > >> Apologies. Python file in the google groups but for some reason didn’t >> come down with the email. >> >> >> >> Also, I now have a sample program (nearly) working in C++. My last step >> was to copy all the dlls from the vcpkg install into the source directory, >> otherwise they weren’t found when running. I’m left with setting the >> location of the language file and it should work. But the python will be >> helpful nonetheless. >> >> >> >> Iain >> >> >> >> *From:* tesser...@googlegroups.com [mailto:tesser...@googlegroups.com] *On >> Behalf Of *Dominic Mukilan >> *Sent:* 13 July 2024 17:42 >> *To:* tesser...@googlegroups.com >> *Subject:* Re: [tesseract-ocr] Tessarct won't recognise single characters >> >> >> >> Attaching the python file, the supporting files, and requirements.txt >> >> >> >> On Sat, 13 Jul 2024 at 21:56, Iain Downs <ia...@idcl.co.uk> wrote: >> >> Can you give me some example code? I'm currently trying to get tesseract >> working for C++ in Visual Studio and it's a bit of a nightmare. python >> seems easier though it's not one of my main languages - I can try it out >> though! >> >> >> >> Iain >> >> On Saturday, July 13, 2024 at 11:20:54 AM UTC+1 renec...@gmail.com wrote: >> >> Hi, >> >> I try your example with tesseract for python - it works well >> >> >> >> Le jeu. 11 juil. 2024 à 20:35, Iain Downs <ia...@idcl.co.uk> a écrit : >> >> I'm trying to extract page numbers from scanned pages of text. Page >> Numbers are either at the top or at the bottom - sometimes with titles / >> authors / chapters. Occasionally elsewhere, but I don't care about the >> exceptions. >> >> >> >> I've loaded tesseract 5.4 (windows) and run some tests using the >> executable. I'm finding that if the page number is a single digit on the >> line, tesseract ignores it (but otherwise does a fantastic job of OCR even >> with skewed and noisy images). >> >> >> >> I've isolated the single line used that as input and tesseract tells me >> 'the page is empty'. >> >> >> >> Here is a sample of a single line with a '1' in it resolution is 300dpi. >> >> [image: Image removed by sender. 101_bottom.jpg] >> >> >> >> Ultimately I would be writing a program using tesseract, but in the first >> instance I'd like to see it work with the exe. >> >> >> >> So, can I tell tesseract to be less fussy with individual characters and >> if not how would I do so programatically - if possible? >> >> >> >> Thanks >> >> >> >> Iain >> >> -- >> 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/c42d435c-4db5-48b5-94d3-5b761d340731n%40googlegroups.com >> >> <https://groups.google.com/d/msgid/tesseract-ocr/c42d435c-4db5-48b5-94d3-5b761d340731n%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/2e56b599-4dcf-4b93-8e1b-40a57b36d3e9n%40googlegroups.com >> >> <https://groups.google.com/d/msgid/tesseract-ocr/2e56b599-4dcf-4b93-8e1b-40a57b36d3e9n%40googlegroups.com?utm_medium=email&utm_source=footer> >> . >> >> -- >> You received this message because you are subscribed to a topic in the >> Google Groups "tesseract-ocr" group. >> To unsubscribe from this topic, visit >> https://groups.google.com/d/topic/tesseract-ocr/AI48y7_QMlg/unsubscribe. >> To unsubscribe from this group and all its topics, send an email to >> tesseract-oc...@googlegroups.com. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/tesseract-ocr/CAOrS2tW_CUVUsOv%3DAXanD2947Q29xC8hO1z6kzXLciix8XHbJA%40mail.gmail.com >> >> <https://groups.google.com/d/msgid/tesseract-ocr/CAOrS2tW_CUVUsOv%3DAXanD2947Q29xC8hO1z6kzXLciix8XHbJA%40mail.gmail.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/add62795-e1d2-47e9-a8b0-43bcc3f9832fn%40googlegroups.com.
