MacPorts is an open-source software package management tool that makes it relatively easy for Mac users to compile, install and upgrade open-source software and their dependencies. It's a great first step in installing Tesseract on a Mac.
Optical character recognition (OCR) is the process of extracting written or typed text from images such as photos and scanned documents into machine-encoded text. The new rOpenSci package brings one of the best open-source OCR engines to R. This enables researchers or journalists, for example, to search and analyze vast numbers of documents that are only available in printed form. People looking to extract text and metadata from pdf files in R should try our package. Getting Started The package links to the libtesseract C library and works out of the box on Windows and Mac without installing any third party software.
Install.packages('tesseract') On Linux you first need to install libtesseract which ships with every popular distribution (Debian, Ubuntu, Fedora, CentOS, etc). The package itself is very simple. The ocr function takes a URL or path or raw vector with image data. On most platforms the image should either be in png or jpeg or tiff format. Library(tesseract) text.
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