Hello Jaspreet, Do you know of resources / documentation that explain step by step how to correctly use those box files, with ground truth files? I know jsTextEditor can help out with that, but I never been able to correctly use those box files, after. I cannot find a good article to explain how to generate the grouns truth files either.
PS: I know how to generate the box files and how to change them correctly. Last time I did it, I was doing it on per letter, rather than words. Thanks for feedback. On Sat, Sep 3, 2022, 05:26 Jaspreet Kaur <jaspreet....@gmail.com> wrote: > Preprocessing helps when your images are not clear to enhance the image > quality. You can also work with box file by correcting the box files and > put right characters into it. > > On Wed, Aug 31, 2022 at 8:40 PM Adrian Paul Ciobanita < > adrian.cioban...@gmail.com> wrote: > >> Can you recomend tutorials, or books avout how to do image pre-processing >> effectively and efficiently? >> >> Do we need to do different types of image pre-processing for each image? >> If we have 100+ images, how do we ensure that the pre-processing is helping >> the prediction accuracy 100%? >> >> On Wed, Aug 31, 2022, 18:04 Zdenko Podobny <zde...@gmail.com> wrote: >> >>> Trained data from tesseract 5 are compatible with 4, so definitely I >>> would suggest using the latest tesseract version for training - there was a >>> lot of bug fixing and speed improvements. >>> >>> IMO tesseract training has never been easy. I always suggest focusing on >>> image preprocessing rather than training. >>> Following an easy looking training tutorial could also mean you are on >>> the wrong path (=> you waste your time and it increases your frustration). >>> For example:Tesseract 4 has 2 engines LSTM and legacy engine. In this >>> particular video, for which engine is that training? For hints see[1]. Did >>> you plan to train that engine or other one? >>> >>> [1] >>> https://tesseract-ocr.github.io/tessdoc/tess5/TrainingTesseract-5.html#overview-of-training-process >>> >>> Zdenko >>> >>> >>> st 31. 8. 2022 o 15:40 John Alway <jal...@gmail.com> napísal(a): >>> >>>> "First of all: if you follow any tutorial on internet - report the >>>> problem to the author of the tutorial." >>>> Next: use official documentation for training. I see there are a bunch >>>> of folks just "generating content" - to gain an audience. Without insight >>>> and therefore also without support, using old/outdated information..." >>>> >>>> People are trying to find a nice, easy tutorial to help them get >>>> through the forest. I think that's the bottom line. Thanks for the >>>> link. >>>> >>>> 'Tesseract 4 was released 29 Oct 2018. Almost 4 year ago! The recent >>>> tesseract version is 5.2 and training process was also improved: >>>> https://github.com/tesseract-ocr/tesstrain"; >>>> >>>> I understand this, but I'm using C# .Net, and I don't think version 5 >>>> is available in C#. Unless I'm mistaken? There are costly packages, such >>>> as IronOcr which uses tesseract 5, but there is no way I can take that >>>> route. >>>> >>>> Regards, >>>> ...John >>>> >>>> >>>> >>>> [image: width=] >>>> <http://www.avg.com/email-signature?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail> >>>> Virus-free.www.avg.com >>>> <http://www.avg.com/email-signature?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail> >>>> <#m_-6844377726572713331_m_6355754896298224251_m_3887433753171410442_m_4818300399805832802_m_6502694561301915279_DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2> >>>> >>>> On Wed, Aug 31, 2022 at 3:27 AM Zdenko Podobny <zde...@gmail.com> >>>> wrote: >>>> >>>>> First of all: if you follow any tutorial on internet - report the >>>>> problem to the author of the tutorial. >>>>> Next: use official documentation for training. I see there are a bunch >>>>> of folks just "generating content" - to gain an audience. Without insight >>>>> and therefore also without support, using old/outdated information... >>>>> Tesseract 4 was released 29 Oct 2018. Almost 4 year ago! The recent >>>>> tesseract version is 5.2 and training process was also improved: >>>>> https://github.com/tesseract-ocr/tesstrain >>>>> >>>>> Zdenko >>>>> >>>>> >>>>> st 31. 8. 2022 o 0:18 John Alway <jal...@gmail.com> napísal(a): >>>>> >>>>>> Hello, >>>>>> >>>>>> I've been following a tutorial on youtube titled "Tesseract OCR - >>>>>> Lesson 2: Training Tesseract for new font" here: >>>>>> https://www.youtube.com/watch?v=1v8BPw0Dn0I&ab_channel=TheCode >>>>>> >>>>>> I'm using tesseract 4.0 on Window 10. >>>>>> >>>>>> I went through the steps he used, and everything seems to go smoothly >>>>>> until I get to the actual training. When I run "mftraining" the >>>>>> program >>>>>> hangs. It seems to get stuck and doesn't indicate why are what it's >>>>>> doing. >>>>>> >>>>>> I'm using a set of fonts in an image. I have the full alphabet upper >>>>>> and lower case and the numbers 0 to 9 on the png image. I've attached >>>>>> the >>>>>> image. Unlike him, I'm using the English. I don't know the font, so I'm >>>>>> just calling it tiktok to give it a name. My training file is called >>>>>> *eng.tiktok.exp0.tr >>>>>> <http://eng.tiktok.exp0.tr> * >>>>>> >>>>>> I used* jTessBoxEditor* to correct mistakes and set the box sizes >>>>>> and positions precisely. >>>>>> >>>>>> >>>>>> When I run this command: >>>>>> *mftraining -F font_properties -U unicharset -O eng.unicharset >>>>>> eng.tiktok.exp0.tr <http://eng.tiktok.exp0.tr>* >>>>>> >>>>>> The program just hangs. I've waited over twenty minutes. >>>>>> >>>>>> Should I wait longer? What could cause it to hang? >>>>>> >>>>>> >>>>>> >>>>>> Thanks! >>>>>> ...John >>>>>> >>>>>> -- >>>>>> 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/534c3f74-420b-4c96-83dd-609bcb002f81n%40googlegroups.com >>>>>> <https://groups.google.com/d/msgid/tesseract-ocr/534c3f74-420b-4c96-83dd-609bcb002f81n%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/CAJbzG8w5MX1XchQp6jfu2Vz06zWp82HxbDHrgp7%2BQ_Neh%2BDeug%40mail.gmail.com >>>>> <https://groups.google.com/d/msgid/tesseract-ocr/CAJbzG8w5MX1XchQp6jfu2Vz06zWp82HxbDHrgp7%2BQ_Neh%2BDeug%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/CAN7TTkEYLexQwmN9y3qO6cwqGoW72HoaEj8XksAgTwb3qVSNPA%40mail.gmail.com >>>> <https://groups.google.com/d/msgid/tesseract-ocr/CAN7TTkEYLexQwmN9y3qO6cwqGoW72HoaEj8XksAgTwb3qVSNPA%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/CAJbzG8wt1fjKy66uZ9-sEAqUkEwagLAZhFxcDV_8QLuPgk%3DnvQ%40mail.gmail.com >>> <https://groups.google.com/d/msgid/tesseract-ocr/CAJbzG8wt1fjKy66uZ9-sEAqUkEwagLAZhFxcDV_8QLuPgk%3DnvQ%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/CADB4xcjLwGXFqNFnxwFVWcOXAtztmd3aLrs4G6AnzXawWYwf_A%40mail.gmail.com >> <https://groups.google.com/d/msgid/tesseract-ocr/CADB4xcjLwGXFqNFnxwFVWcOXAtztmd3aLrs4G6AnzXawWYwf_A%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/CAFoW%2BHKtr99dFPBZUH%2B-NZc7xeJ4fpwvXgqgLdobDuTLOSgzRQ%40mail.gmail.com > <https://groups.google.com/d/msgid/tesseract-ocr/CAFoW%2BHKtr99dFPBZUH%2B-NZc7xeJ4fpwvXgqgLdobDuTLOSgzRQ%40mail.gmail.com?utm_medium=email&utm_source=footer> > . > -- You received this message because you are subscribed to the Google Groups "tesseract-ocr" group. 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