The ocreval consist of 17 tools for measuring the performance of and experimenting with OCR output. See the user guide for more information.

ocreval is a modern port of the ISRI Analytic Tools for OCR Evaluation, with UTF-8 support and other improvements.

See the archived Google Code repository of the original project!

Using Homebrew:

brew install eddieantonio/eddieantonio/ocreval 

To build the library and all of the programs, ensure that you have all required dependencies.

ocreval requires utf8proc to build from source.

Using Homebrew:

brew install utf8proc 

You may need to install make and a C compiler:

sudo apt install build-essential 

Then install, libutf8proc-dev:

sudo apt install libutf8proc-dev 

If libutf8proc-dev cannot be installed using apt, follow Other Linux below

Install libutf8proc-dev manually:

curl -OL https://github.com/JuliaStrings/utf8proc/archive/v1.3.1.tar.gz tar xzf v1.3.1.tar.gz cd utf8proc-1.3.1/ make sudo make install # Rebuild the shared object cache - needed to load the library # at runtime <http://linux.die.net/man/8/ldconfig> sudo ldconfig cd - 

Once all dependencies are installed, you may compile all of the utilities using make:

make 

Install to /usr/local/:

sudo make install 

Note: You will not need sudo on macOS if you have brew installed.

This will not copy any files at all, but instead create the appropriate shell commands to add all executables, man pages, and libraries to the correct path (replace ~/.bashrc with your start-up file):

make exports >> ~/.bashrc 

Ported by Eddie Antonio Santos, 2015, 2016. See NOTICE for copyright information regarding the original code.

@inproceedings{santos-2019-ocr, title = "{OCR} evaluation tools for the 21st century", author = "Santos, Eddie Antonio", booktitle = "Proceedings of the 3rd Workshop on the Use of Computational Methods in the Study of Endangered Languages Volume 1 (Papers)", month = feb, year = "2019", address = "Honolulu", publisher = "Association for Computational Linguistics", url = "https://www.aclweb.org/anthology/W19-6004", pages = "23--27", }

See: https://www.aclweb.org/anthology/W19-6004/

Copyright 2015–2017 Eddie Antonio Santos

Copyright © 2018–2021 National Research Council Canada

Copyright 1996 The Board of Regents of the Nevada System of Higher Education, on behalf, of the University of Nevada, Las Vegas, Information Science Research Institute

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.