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Author Topic: Using Tesseract without installation on Linux  (Read 778 times)

backprop

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Using Tesseract without installation on Linux
« on: October 12, 2024, 08:40:38 am »
Anyone know what is necessary to have in order to use tesseract without installation on Linux? I'm using TTesseractOCR4.

But in general, tesseract is quite unstable... Is there other, more stable free OCR supported with lazarus/fpc?

My OCR requirements are minimal, just to recognize standard English character fonts and numbers. But to do that correctly, not to mix 5 and 3, letters with numbers etc.

That is probably because NN is trained with numbers and letters together, which is big mistake anyway, then all become quite unstable...
« Last Edit: October 12, 2024, 10:06:09 am by backprop »

Tony Stone

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Re: Using Tesseract without installation on Linux
« Reply #1 on: January 20, 2025, 02:55:05 am »
I am curious if you ever found any good OCR solutions?  I have been using Tesseract. I use it to gather some information from screen shots but it is pretty slow.  Just to process this browser window it will take up to 25 seconds. 

Thaddy

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  • Kallstadt seems a good place to evict Trump to.
Re: Using Tesseract without installation on Linux
« Reply #2 on: January 20, 2025, 07:41:06 am »
Both libre office and open office install OCR support as part of the scanner options.
I don't think it is possible to use OCR without installing something, though.
There is no native Pascal solution yet.

BTW if Tesseract is unstable for you, you must be doing something very wrong or your hardware does not properly support it. In the latter case, buy a new scanner from HP, Cannon or Epson. Those are reliable options for 40-50 euro and with those brands almost all their newer models support Linux.
Tesseract only has problems with older (more than 10 year old) scanners and Windows printer/scanner drivers on Wine.
« Last Edit: January 20, 2025, 07:55:24 am by Thaddy »
But I am sure they don't want the Trumps back...

backprop

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Re: Using Tesseract without installation on Linux
« Reply #3 on: January 26, 2025, 10:26:03 am »
Both libre office and open office install OCR support as part of the scanner options.
I don't think it is possible to use OCR without installing something, though.
There is no native Pascal solution yet.

BTW if Tesseract is unstable for you, you must be doing something very wrong or your hardware does not properly support it. In the latter case, buy a new scanner from HP, Cannon or Epson. Those are reliable options for 40-50 euro and with those brands almost all their newer models support Linux.
Tesseract only has problems with older (more than 10 year old) scanners and Windows printer/scanner drivers on Wine.

Taddy, didn't I tell you already not to reply on my posts - ever! You just trolling and this have nothing related to what I wrote.
« Last Edit: January 26, 2025, 10:29:30 am by backprop »

backprop

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Re: Using Tesseract without installation on Linux
« Reply #4 on: January 26, 2025, 10:35:44 am »
I am curious if you ever found any good OCR solutions?  I have been using Tesseract. I use it to gather some information from screen shots but it is pretty slow.  Just to process this browser window it will take up to 25 seconds.

I have heard EasyOCR is quite good, but... It is based on Python, AI and several support libraries. That is quite big infrastructure just to OCR screenshot...

 

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