Thanks for your quick response. The problem occurred while I am using textfairy which is distributed as mobile application, and there was image pre-processing step in my opinion. Is there any other android project alternative to textfairy?
On Friday, April 2, 2021 at 3:53:12 PM UTC+8 zdenop wrote: > Can you please first read documentation before posting to the forum? > You can start with > https://github.com/tesseract-ocr/tessdoc/blob/master/ImproveQuality.md > > Hint: you can have a look at leptonica pixAutoPhotoinvert() > > https://github.com/DanBloomberg/leptonica/blob/f7a4bdc48f54c973e6b7c47b9181ac0ef0bd2089/src/pageseg.c#L2370 > > Zdenko > > > št 1. 4. 2021 o 16:00 two way <twowa...@gmail.com> napísal(a): > >> I've found a serious problem while I am testing with two images like >> below. >> >> [image: img1.png] >> [image: img2.png] >> >> It is working well with first image which has light background and dark >> letters. >> As you can see, the second image is the inverted color of the first image. >> So I expected the two images to produce the same result. >> However, none of the letters were properly detect in the second image. >> >> Thanks for reading my suggestion. >> Regards. >> XueQing >> >> -- >> 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/73f9dbf2-751c-4b0e-9cbc-64889ae84d3bn%40googlegroups.com >> >> <https://groups.google.com/d/msgid/tesseract-ocr/73f9dbf2-751c-4b0e-9cbc-64889ae84d3bn%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/a869ae01-6eaa-4cd0-9fdd-39a7913bb262n%40googlegroups.com.
