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Mac Installation Instructions

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brew install tesseract tesseract-

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lang

Issues with Installing via Brew

If you have trouble installing via Brew, some options to try:

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, you can

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try

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installing Tesseract from source.

Tesseract won't work with TIFF files

If you are having trouble getting Tesseract to work with TIFF files, read this link. Summary:

1. uninstall tesseract: brew uninstall tesseract
2. 2. uninstall leptonica brew uninstall leptonica
3. 3. install leptonica with tiff support brew install leptonica --with-libtiff 4.
4. install tesseract brew install tesseract --with-all-languages --with-serial-num-packtesseract-lang

Installing Tesseract on RHEL

1. Add "epel" to your yum repositories if it isn't already installed
   1a. wget https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm (or appropriate version)
   1b. rpm -Uvh epel-release-latest-7.noarch.rpm
   2. yum install tesseract 3. To add language packs, see what's available yum search tesseract then, e.g. yum install tesseract-langpack-ara

Installing Tesseract on Ubuntu

1. sudo apt-get update
2. 2. sudo apt-get install tesseract-ocr
3. 3. To add language packs, see what's available then, e.g. sudo apt-get install tesseract-ocr-fra
   
   

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• Tesseract installation path = ""
• Language dictionary = "eng"
• Page Segmentation Mode = "1"
• Minmum file size = 0
• Maximum file size = 2147483647
• Timeout = 120

To changes these settings you can either modify the existing TesseractOCRConfig.properties file in tika-parser/src/main/resources/org/apache/tika/parser/ocr, or overriding it by creating your own and placing it in the package org/apache/tika/parser/ocr on your classpath.

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