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OCR-D wiki

Welcome to the OCR-D wiki, a companion to the OCR-D website.

Here, we want to collect documentation, scripts, projects, tutorials, reviews etc. from OCR-D users.

Feel free to add links to the Wiki homepage or create a new wiki page. Drop a line in the OCR-D gitter chat if you do so to inform your fellow OCR-D users.

Official OCR-D links

• OCR-D Website
• OCR-D Ground Truth Guidelines
• OCR-D gitter chat
• OCR-D GitHub organization
• OCR-D Support Call in preparation of phase 3 of OCR-D
• Letters of Intent of projects for phase 3 of OCR-D

GitHub projects and wikis

• tesseract-ocr/tesstrain - Makefile-based approach to training Tesseract 4+
• tesseract-ocr/tesstrain wiki - Contains tutorials how to train tesseract with various datasets
• cneud/ocr-gt - Collection of Ground Truth datasets usable for OCR training and evaluation
• kba/awesome-ocr - Collection of various OCR and OCR-related projects

Articles and tutorials

• Running OCR-D on different versions of Debian and Ubuntu
• Running OCR-D on macOS
• Running OCR-D in Windows 10 with Windows Subsystem for Linux
• Running OCR-D on POWER8 (IBM pSeries)
• Running browse-ocrd in a Docker container
• OCR-D Installation on NVIDIA Jetson Nano and Xavier
• Mapping between PAGE and ALTO
• Comparison of OCR formats (outdated)
• A Practitioner's View on Binarization
• How to use the bulk-add command to generate workspaces from existing files
• Evaluation of (intermediary) steps of an OCR workflow
• A quickstart guide to ocrd workspace
• Introduction to parameters in OCR-D
• Introduction to OCR-D processors
• Introduction to OCR-D workflows
• Visualizing (intermediate) OCR-D-results
• Guide to updating ocrd workspace calls for 2.15.0+
• Introduction to Docker in OCR-D
• How to import Abbyy-generated ALTO
• How to create searchable full-text data for DFG Viewer
• How to create ALTO for DFG Viewer
• Setup native CUDA Toolkit for Qurator tools on Ubuntu 18.04
• OCR-D Code Review Guidelines
• OCR-D Recommendations for Using CI in Your Repository

Discussions

• Open Tech Call - APIs - 2020-08-06
• Open Tech Call - API / Workflows - 2020-08-20

Section on OCR-D-workflows

Particular workflow steps

The following wiki pages are used to build the OCR-D website.

• Workflow Guide: preprocessing
• Workflow Guide: binarization
• Workflow Guide: cropping
• Workflow Guide: denoising
• Workflow Guide: deskewing
• Workflow Guide: dewarping
• Workflow Guide: region-segmentation
• Workflow Guide: clipping
• Workflow Guide: line-segmentation
• Workflow Guide: resegmentation
• Workflow Guide: text-recognition
• Workflow Guide: text-alignment
• Workflow Guide: post-correction
• Workflow Guide: ocr-evaluation
• Workflow Guide: adaptation-of-coordinates
• Workflow Guide: generic-transformations
• Workflow Guide: dummy-processing
• Workflow Guide: format-conversion
• Workflow Guide: archiving
• Workflow Guide: recommended workflows

Recommended workflows

• Successful Workflows for Particular Material (Template)
• Selection of OCR-D workflows

Videos

• How to recognize text from images (Tesseract training with OCR-D)
• How to recognize text from images (Tesseract training with OCR-D) - Part 2
• How to recognize text from images (Tesseract training with OCR-D) - Part 3

Section on Ground Truth

Questions and answers about special problems

• How to write a question on Ground Truth (Guideline)
• GT Guide Currency symbol
• GT Guide Transcription of incunabula
• GT Guide Transcription of incunabula some problems with words
• GT Guide Use special fonts