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55 lines
1.9 KiB
Markdown
55 lines
1.9 KiB
Markdown
# Language tests.
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The scripts in this directory make it possible to test Accuracy of Tesseract for different languages.
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## Setup
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### Step 1: If not already installed, download the modified ISRI toolkit,
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make and install the tools in /usr/local/bin.
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```
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git clone https://github.com/Shreeshrii/ocr-evaluation-tools.git
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cd ~/ocr-evaluation-tools
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sudo make install
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```
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### Step 2: If not alrady built, Build tesseract.
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Use binaries from the tesseract/src/api and tesseract/src/training directory.
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### Step 3
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Download images and corresponding ground truth text for the language to be tested.
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Each testset should have only one kind of images (eg. tif, png, jpg etc).
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The ground truth text files should have the same base filename with txt extension.
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As needed, modify the filenames and create the `pages` file for each testset.
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Instructions for testing Fraktur and Sanskrit languages are given below as an example.
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## Testing for Fraktur - frk and script/Fraktur
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### Download the images and groundtruth, modify to required format.
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```
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bash -x frk_setup.sh
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```
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### Run tests for Fraktur - frk and script/Fraktur
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```
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bash -x frk_test.sh
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```
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## Testing for Sanskrit - san and script/Devanagari
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### Download the images and groundtruth, modify to required format.
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```
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bash -x deva_setup.sh
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```
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### Run tests
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```
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bash -x deva_test.sh
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```
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### Notes from Nick White regarding wordacc
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If you just want to remove all lines which have 100% recognition,
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you can add a 'awk' command like this:
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ocrevalutf8 wordacc ground.txt ocr.txt | awk '$3 != 100 {print $0}'
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results.txt
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or if you've already got a results file you want to change, you can do this:
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awk '$3 != 100 {print $0}' results.txt newresults.txt
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If you only want the last sections where things are broken down by
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word, you can add a sed commend, like this:
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ocrevalutf8 wordacc ground.txt ocr.txt | sed '/^ Count Missed %Right $/,$
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!d' | awk '$3 != 100 {print $0}' results.txt
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