I cannot use traineddata downloaded from Data Files

[坂本聖]

Hi,

I want to use tesseract for Chinese words. So, first I tried to execute the command 

sudo apt install tesseract-ocr-chi-sim 

And, I can find chi_sim.traineddata in /usr/share/tesseract-ocr/4.00/tessdata and can check like this (I also downloaded chi_tra and jpn.)

$ tesseract --list-langs

List of available languages (5):

chi_sim

chi_tra

eng

jpn

osd

Actually, I can use tesseract, but I want to do ocr more accurately, so I want to use chi_sim.traineddata downloaded from here.

https://github.com/tesseract-ocr/tessdata/blob/master/chi_sim.traineddata

After I executed the command

sudo apt remove tesseract-ocr-chi-sim

I put the new chi_sim.traineddata in /usr/share/tesseract-ocr/4.00/tessdata, and I tried to use tesseract. However I cannot like this.

$ tesseract 0.jpeg output -l chi_sim

Error opening data file /usr/share/tesseract-ocr/4.00/tessdata/chi_sim.traineddata

Please make sure the TESSDATA_PREFIX environment variable is set to your "tessdata" directory.

Failed loading language 'chi_sim'

Tesseract couldn't load any languages!

Could not initialize tesseract.

Then, I tried like this, but I cannot.

$ tesseract 0.jpeg output -l chi_sim --tessdata-dir /usr/share/tesseract-ocr/4.00/tessdata

Error opening data file /usr/share/tesseract-ocr/4.00/tessdata/chi_sim.traineddata

Please make sure the TESSDATA_PREFIX environment variable is set to your "tessdata" directory.

Failed loading language 'chi_sim'

Tesseract couldn't load any languages!

Could not initialize tesseract.

Then, I tried to connect path to /usr/share/tesseract-ocr/4.00/tessdata and tried again, but I cannot.

$ export TESSDATA_PREFIX=/usr/share/tesseract-ocr/4.00/tessdata/

$ tesseract 0.jpeg output -l chi_sim

Error opening data file /usr/share/tesseract-ocr/4.00/tessdata/chi_sim.traineddata

Please make sure the TESSDATA_PREFIX environment variable is set to your "tessdata" directory.

Failed loading language 'chi_sim'

Tesseract couldn't load any languages!

Could not initialize tesseract.

If I execute the language list, I can find chi_sim.traineddata again.

$ tesseract --list-langs

List of available languages (5):

chi_sim

chi_tra

eng

jpn

osd

Please tell me why I cannot use the traineddata downloaded from https://github.com/tesseract-ocr/tessdata/blob/master/chi_sim.traineddata? Did I make a mistake?

[NY C]

Try to set TESSDATA_PREFIX environment variable.

1. Go to Control Panel -> System -> Advanced System Settings -> Advanced tab -> Environment Variables... button
2. In System variables window scroll down to TESSDATA_PREFIX. If it's not right, select and click Edit...

坂本聖於 2019年12月8日星期日 UTC+8上午12時34分26秒寫道：

[Zdenko Podobny]

How did you downloaded files from repository?

Please check files in  /usr/share/tesseract-ocr/4.00/tessdata/ if there have the same size as in repository.

Zdenko

so 7. 12. 2019 o 17:34 坂本聖 <eclipse.alg...@gmail.com> napísal(a):

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[坂本聖]

Thanks for your advice, however I am using ubuntu on wsl (windows subsystem for linux), and I have already tried to set TESSDATA_PEREFIX by executing $ export TESSDATA_PREFIX=/usr/share/tesseract-ocr/4.00/tessdata/  .

But, I cannot use tesseract.

If I use the traineddata downloaded from sudo apt install tesseract-ocr-chi-sim, I can use tesseract with the data downloaded from data Data files.

Cannot I use tesseract on wsl (Ubuntu)? 

2019年12月8日日曜日 11時06分58秒 UTC+9 NY C:

[坂本聖]

Thanks for your advice.

I downdloaded files by clicking the "download" button in https://github.com/tesseract-ocr/tessdata/blob/master/chi_sim.traineddata.

And I moved the chi_sim.traineddata file to  /usr/share/tesseract-ocr/4.00/tessdata/ , and checked the file (which size is 42.3MB)  exactly there.

But, I cannot use tesseract.

As I said, I can use tesseract with the file downloaded by executing sudo apt install tesseract-ocr-chi-sim, but the data downloaded from Data files did not work.

I cannot understand why it did not work.

2019年12月8日日曜日 23時15分31秒 UTC+9 zdenop:

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[Zdenko Podobny]

what is output of:

 tesseract --version

Zdenko

ne 8. 12. 2019 o 15:55 坂本聖 <eclipse.alg...@gmail.com> napísal(a):

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[坂本聖]

The output is this one.

$ tesseract --version

tesseract 4.0.0-beta.1

leptonica-1.75.3

libgif 5.1.4 : libjpeg 8d (libjpeg-turbo 1.5.2) : libpng 1.6.34 : libtiff 4.0.9 : zlib 1.2.11 : libwebp 0.6.1 : libopenjp2 2.3.0

 Found AVX2

 Found AVX

 Found SSE

2019年12月9日月曜日 1時43分52秒 UTC+9 zdenop:

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