Removing diagonal Text that intersect with the horizontal text I want to read.

[Mark Heere]

Is there a way to remove the diagonal letters from this page? I'm trying to send it through tesseract but I'm getting a  bunch of garbage where the watermark is meeting the letters in the image. I used GhostScript to convert the original PDF image into the PNG file.

Thanks in advance for your help!

[Lakshay Saini]

Hi Mark,

That's a very difficult task to do, and I don't think it can be done with a code. Instead, you can try removing the background using imagemagick. It increases the transparency of the background. For more information: http://www.imagemagick.org/discourse-server/viewtopic.php?t=24959

Regards
Lakshay

[Zdenko Podobny]

Can you share original pdf to investigate if the problem could not be solved on pdf level (e.g. extract image from pdf without watermark) ?

Your problem is not related to tesseract (or other way - tesseract is not tool that helps you remove watermark), so better option would be to post in on stackoverflow.

I found several examples how remove watermark, but unfortunately non of them works with your image. 

Just for inspiration what is possible:

https://stackoverflow.com/questions/50792812/how-to-remove-watermark-background-in-image-python

http://davidsteccieblog.blogspot.com/2017/10/removing-watermarks.html

https://stackoverflow.com/questions/32125281/removing-watermark-out-of-an-image-using-opencv?noredirect=1&lq=1 

https://magda.space/removing-circles-lines-patterns-part-1/

https://magda.space/removing-circles-lines-patterns-part-1-5/

https://magda.space/removing-circles-lines-patterns-part-2/

Zdenko

pi 7. 2. 2020 o 17:11 Mark Heere <mark....@gmail.com> napísal(a):

Is there a way to remove the diagonal letters from this page? I'm trying to send it through tesseract but I'm getting a  bunch of garbage where the watermark is meeting the letters in the image. I used GhostScript to convert the original PDF image into the PNG file.

Thanks in advance for your help!

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