Gerber, Mike
f2ed0b5cbf
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4 years ago | |
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| data@bd1628e1ae | 4 years ago | |
| ocrd-bugs | 5 years ago | |
| .gitignore | 4 years ago | |
| .gitmodules | 5 years ago | |
| .travis.yml | 4 years ago | |
| Dockerfile-core | 4 years ago | |
| Dockerfile-dinglehopper | 4 years ago | |
| Dockerfile-ocrd_calamari | 4 years ago | |
| Dockerfile-ocrd_cis | 4 years ago | |
| Dockerfile-ocrd_fileformat | 4 years ago | |
| Dockerfile-ocrd_olena | 4 years ago | |
| Dockerfile-ocrd_tesserocr | 4 years ago | |
| Dockerfile-sbb_binarization | 4 years ago | |
| Dockerfile-sbb_textline_detector | 4 years ago | |
| README-DEV.md | 4 years ago | |
| README.md | 4 years ago | |
| build | 4 years ago | |
| my_ocrd_workflow | 4 years ago | |
| ocrd-workspace-from-images | 4 years ago | |
| ppn2ocr | 4 years ago | |
| qurator_data_lib.sh | 4 years ago | |
| requirements-ppn2ocr.txt | 4 years ago | |
| run | 4 years ago | |
| run-docker-hub | 4 years ago | |
| run-docker-hub-update | 4 years ago | |
| zdb2ocr | 4 years ago | |
README.md
ocrd-galley
A Dockerized test environment for OCR-D processors 🚢
WIP. Given a OCR-D workspace with document images in the OCR-D-IMG file group, the example workflow produces:
- Binarized images
- Line segmentation
- OCR text (using Calamari and Tesseract, both with GT4HistOCR models)
- (Given ground truth in OCR-D-GT-PAGE, also an OCR text evaluation report)
If you're interested in the exact processors, versions and parameters, please take a look at the script and possibly the individual Dockerfiles.
Goal
Provide a test environment to produce OCR output for historical prints, using OCR-D, especially ocrd_calamari and sbb_textline_detection, including all dependencies in Docker.
How to use
It's easiest to use it as pre-built containers. To run the containers on an example workspace:
# Update to the latest stable containers
(cd ~/devel/ocrd-galley/; ./run-docker-hub-update)
# Download an example workspace
cd /tmp
wget https://qurator-data.de/examples/actevedef_718448162.first-page.zip
unzip actevedef_718448162.first-page.zip
# Run the workflow on it
cd actevedef_718448162.first-page
~/devel/ocrd-galley/run-docker-hub
Build the containers yourself
To build the containers yourself using Docker:
cd ~/devel/ocrd-galley/
./build
You may then use the script run to use your self-built containers, analogous to
the example above.
Viewing results
You may then examine the results using PRImA's PAGE Viewer:
java -jar /path/to/JPageViewer.jar \
--resolve-dir . \
OCR-D-OCR-CALAMARI/OCR-D-OCR-CALAMARI_00000024.xml
The example workflow also produces OCR evaluation reports using dinglehopper, if ground truth was available:
firefox OCR-D-OCR-CALAMARI-EVAL/OCR-D-OCR-CALAMARI-EVAL_00000024.html
ppn2ocr
The ppn2ocr script produces a workspace and METS file with the best images for
a given document in the State Library Berlin (SBB)'s digitized collection.
Install it with an up-to-date pip (otherwise this will fail due to a opencv-python-headless build failure):
pip install -r ~/devel/ocrd-galley/requirements-ppn2ocr.txt
The document must be specified by its PPN, for example:
~/devel/ocrd-galley/ppn2ocr PPN77164308X
cd PPN77164308X
~/devel/ocrd-galley/run-docker-hub -I BEST --skip-validation
This produces a workspace directory PPN77164308X with the OCR results in it;
the results are viewable as explained above.
ppn2ocr requires properly set up environment variables for the proxy
configuration. At SBB, please read howto/docker-proxy.md and
howto/proxy-settings-for-shell+python.md (in qurator's mono-repo).
ocrd-workspace-from-images
The ocrd-workspace-from-images script produces a OCR-D workspace (incl. METS)
for the given images.
~/devel/ocrd-galley/ocrd-workspace-from-images 0005.png
cd workspace-xxxxx # output by the last command
~/devel/ocrd-galley/run-docker-hub
This produces a workspace from the files and then runs the OCR workflow on it.