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.

  language = NULL,
  datapath = NULL,
  configs = NULL,
  options = NULL,
  cache = TRUE

tesseract_params(filter = "")




string with language for training data. Usually defaults to eng


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


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.


a named list with tesseract parameters. See details.


speed things up by caching engines


only list parameters containing a particular string


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.


tesseract wiki: control parameters

See also

Other tesseract: ocr(), tesseract_download()


#> # A tibble: 66 x 3 #> param default desc #> * <chr> <chr> <chr> #> 1 editor_dbwin_xpos 50 Editor debug window X Pos #> 2 editor_dbwin_ypos 500 Editor debug window Y Pos #> 3 editor_dbwin_height 24 Editor debug window height #> 4 editor_dbwin_width 80 Editor debug window width #> 5 textord_debug_tabfind 0 Debug tab finding #> 6 textord_debug_bugs 0 Turn on output related to bugs in tab fi… #> 7 textord_testregion_left -1 Left edge of debug reporting rectangle #> 8 textord_testregion_top -1 Top edge of debug reporting rectangle #> 9 textord_testregion_right 2147483647 Right edge of debug rectangle #> 10 textord_testregion_bott… 2147483647 Bottom edge of debug rectangle #> # … with 56 more rows