Different behaviour on Ubuntu with tesseract cf0b378 and Mac OS X with tesseract 3.05.01

[David Sixela]

I recently changed my computer from a PC running Ubuntu 16.04 to a MacBook Pro with Mac Os X 10.12.6.

I'm working on a program using tesseract (pytesseract 0.1.7) and opencv 3.3.0 for automatic text extraction on Id cards.

The problem that i'm facing right now is that my program doesn't work properly, the OCR is completely false on my MacBook and i don't get why. I'd like to know what i should do to make it work on MacBook Pro the same way it works on Ubuntu. Should i downgrade? if yes how. Is there new parameters on the new version 3.05.01 ?

configuration :

-Ubuntu 16.04:

  tesseract was build from source

  tesseract --version :

  tesseract cf0b378

    leptonica -1.74.1

      libjpeg 8d (libjpeg-turbo 1.4.2): libpng 1.2.54 : libtiff 4.0.6 : zlib 1.2.8

    FOUND AVX

    FOUND SSE

-MacBook os X 10.12.6 :

  tesseract installed via Homebrew

  tesseract --version:

  tesseract 3.05.01

    leptonica-1.74.4

      libjpeg 9b : libpng 1.6.32 : libtiff 4.0.8 : zlib 1.2.8

Example:

on this particular image :

The output of this command 

tesseract image.jpg stdout

on Ubuntu's configuration : 

Gabo / M

MacBook Pro 's configuration: 

GM!"

[ShreeDevi Kumar]

you can build 4.o on macos

$ brew update
$ brew install tesseract --HEAD

ShreeDevi
____________________________________________________________
भजन - कीर्तन - आरती @ http://bhajans.ramparivar.com

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[David Sixela]

Thanks for your answer, i'm going to try that. But do you think this will solve that issue? what's wrong with 3.05.01?

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[ShreeDevi Kumar]

I thought you wanted to match the version you had built from source. 

3.05.01 uses legacy tesseract engine.

building from source in master branch will give you 4.00.00alpha - LSTM based OCR. It has not been released yet.

See https://github.com/tesseract-ocr/tesseract/issues/864 for more details

ShreeDevi
____________________________________________________________
भजन - कीर्तन - आरती @ http://bhajans.ramparivar.com

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[David Sixela]

I just ran into errors while trying to install tesseract --HEAD:

Error: Failed to download resource "tesseract--tessdata-head"

Failure while executing: git clone --depth 1 --branch master https://github.com/tesseract-ocr/tessdata.git /Users/drnnokc/Library/Caches/Homebrew/tesseract--tessdata-head--git

[ShreeDevi Kumar]

sorry, can't help as I do not have a mac.

Please post on the related issue - maybe @stweil can help.

ShreeDevi
____________________________________________________________
भजन - कीर्तन - आरती @ http://bhajans.ramparivar.com

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[David Sixela]

Thanks for your help, i'll look deeper and see what i can do.

[David Sixela]

I solved this error just by doing 

brew update
brew install tesseract --HEAD

Now everything works perfectly. Thank you @shree