tesseract: Tesseract Engine

Description Usage Arguments Details References See Also Examples

Description

Create an OCR engine for a given language and control parameters. This can be used by the ocr and ocr_data functions to recognize text.

Usage

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tesseract(language = NULL, datapath = NULL, configs = NULL,
  options = NULL, cache = TRUE)

tesseract_params(filter = "")

tesseract_info()

Arguments

language

string with language for training data. Usually defaults to eng

datapath

path with the training data for this language. Default uses the system library.

configs

character vector with files, each containing one or more parameter values. These config files can exist in the current directory or one of the standard tesseract config files that live in the tessdata directory. See details.

options

a named list with tesseract parameters. See details.

cache

speed things up by caching engines

filter

only list parameters containing a particular string

Details

Tesseract control parameters can be set either via a named list in the options parameter, or in a config file text file which contains the parameter name followed by a space and then the value, one per line. Use tesseract_params() to list or find parameters. Note that that some parameters are only supported in certain versions of libtesseract, and that invalid parameters can sometimes cause libtesseract to crash.

References

tesseract wiki: control parameters

See Also

Other tesseract: ocr, tesseract_download

Examples

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tesseract documentation built on March 18, 2018, 2:30 p.m.