Tesseract Ocr Tessdata Download
Berniece Rybacki
tessdata_best is for people willing to trade a lot of speed for slightly better accuracy. It is alsothe only set of files which can be used for certain retraining scenarios for advanced users.
The third set in tessdata is the only one that supports the legacy recognizer. The 4.00 files from November 2016 have both legacy and older LSTM models. The current set of files in tessdata have the legacy models and newer LSTM models (integer versions of 4.00.00 alpha models in tessdata_best).
The traineddata file for each language is an archive file in a Tesseract specific format. It contains several uncompressed component files which are needed by the Tesseract OCR process. The program combine_tessdata is used to create a tessdata file from the component files and can also extract them again like in the following examples:
I have been using pytesseract inside conda environment for quite some but there is a need to improve the accuracy and I found out that tessdata_best gives you the best accuracy. How can I install and use that version? I am using Ubuntu 18 and have to work with pytesseract.
Third and last thing is that I have my language.trainedata files at /home/deshwal/anaconda3/envs/py36/share/tessdata/eng.traineddata. Do I need to paste the tessdata_best at this location too? Becuse when I try to change the language dir, it gives me error as as:
/home/deshwal/anaconda3/envs/py36/share/tessdata/equ.traineddata Please make sure the TESSDATA_PREFIX environment variable is set to your "tessdata" directory. Failed loading language \'equ\' Tesseract couldn\'t load any languages! Could not initialize tesseract.'
As in this post: pytesseract using tesseract 4.0 numbers only not working Described, its possible to detect numbers with the eng.traineddata file but if I want to detect only numbers, this isn't possible with this file. Even if you define tessedit_char_whitelist=0123456789 it doesn't recognize anything.
After issuing "pacman -Syu" one of the repos requires to install tesseract, which is a hand-writing recognition software (?). I have been using arch for a little while but i cant figure out more about this. If i ignore new packages and just update the currently installed i.e. "pacman -Sua" then the tesseract requirement goes away. So its a new package that requires tesseract which is odd. It also warns about a cyclic dependency
I had similar issue just now and I was trying to find the culprit myself without luck. pacman -Qi or -Si on tessdata meta package did not bring anything, same as checking tesseract-data-afr.
How to check which package (indeed mupdf-gl in my case) depends on packages to be installed in -Syu? Teach a man to fish....
I had the same problem, I did a fair bit of looking around for a solution and these looked complicated but not always successful - then I realised that the problem was actually rather simple, a quick fix was right there in that the error message is explicit about where the files are expected to be, in the parent folder of tessdata.
You seem to have not set the TESSDATA_PREFIX variable.Edit /.bashrc with any text editor, eg. nano /.bashrc' and add a line export TESSDATA_PREFIX='' where I suppose tessdata refers to the folder you have mentioned.
I tried understanding it on stack overflow but no dice. I'm not sure what to do because I don't even know what all this is supposed to mean. Can someone explain it and walk me through it like i'm 5 years old? What is a TESSDATA_PREFIX environment variable, and how do I access it, and how do I set it to my "tessdata" directory? I've never heard of this stuff before.
On Gentoo the package app-text/tessdata_fast, which app-text/tesseract depends on, handles Tesseract languages.It accepts USE flags to select what languages should be installed, these can be set in /etc/portage/package.use.Alternatively one can globally set the L10N use extension in /etc/portage/make.conf.This enables these languages for all packages (e.g. including aspell).
The Tesseract installer provided by Chocolatey currently includes only English language.To install other languages, download the respective language pack (.traineddata file)from -ocr/tessdata/ and place it inC:\\Program Files\\Tesseract-OCR\\tessdata (or wherever Tesseract OCR is installed).
I'm trying to get Tesseract to work using the example script here: -tesseract-simple-example/ Downloading the script and running it with the example image just gives me a blank readout. Someone else had the same problem here: -single-dll-file-for-ocr/#comment-1263034 but doesn't provide an explanation of how they fixed it. Has anyone else experienced this problem and know of a fix?
tesseract will not update due to conflict, output below. Getting around this for now by excluding it when updating the system. Been seeing this for about a month to 6 weeks now. Anyone idea how to fix this please?
I have my types of font which used in application. Those are not standard font , but modified one. When I use .text() and Region.click ("String") command then sometimes it fail to recognize the string and hence I decided to train the OCR for my types of fonts. I have trained it manually first and replaced trainedData from C:\Users\Admin\AppData\Roaming\Sikulix\SikulixTesseract\tessdata by trainedData that I have created, but sikuli crashed when I execute the command .text() or Region.click("String") command.
Then I trained OCR by using jTessBoxEditor-1.4 tool and and kept it in previous said location. Sikuli worked this time but results are worse than what had seen by original trained data.
I want to know how you have trained OCR, by using what images/ fonts and dictionary files ? This will help me to train OCR to detect my types of fonts.
If you have your own trained data, you have to add it to SikuliX's tessdata folder according to the rules of Tesseract.
Currently there is only one option in that you can select the language to be used at runtime, but this can also be hacked, by renaming the language set to the eng version.
Warning: You are running an unsupported version of Tesseract. Expecting version 3.03, your version is: 3.02.02 Error opening data file /usr/local/share/tessdata/lus.traineddata Please make sure the TESSDATA_PREFIX environment variable is set to the parent directory of your "tessdata" directory. Failed loading language 'lus' Tesseract couldn't load any languages! Segmentation fault (core dumped)
Currently we are making .war file for our Tesseract API and we can make the
program to find tessdata. We have it in resources folder and when we
referenced it simply by path it gave us the following error:
But tessdata can be anywhere on the local filesystem. You will need to call setDatapath or set the TESSDATA_PREFIX environment variable accordingly to tell Tesseract where to find the .traineddata language packs.
This time it was Engine mode 1 with best_traineddata and we thought we referenced path to tessdata but it cant find it. Can you just show me an example how would you reference tessdata folder, which is located in src/main/resources/ ? In the meantime i will try to figure your other answer out.
This plugins adds tesseract-standalone directory to your build with its executable, libs and tessdata and convenience script tesseract to the root of your project. You may call it directly or add it to path:
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