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Extract text from an image using the tesseract package.

Usage

image_ocr(image, language = "eng", HOCR = FALSE, ...)

image_ocr_data(image, language = "eng", ...)

Arguments

image

magick image object returned by image_read() or image_graph()

language

passed to tesseract. To install additional languages see instructions in tesseract_download().

HOCR

if TRUE return results as HOCR xml instead of plain text

...

additional parameters passed to tesseract

Details

To use this function you need to tesseract first:

install.packages("tesseract")

Best results are obtained if you set the correct language in tesseract. To install additional languages see instructions in tesseract_download().

Examples

if(require("tesseract")){
img <- image_read("http://jeroen.github.io/images/testocr.png")
image_ocr(img)
image_ocr_data(img)
}
#> Loading required package: tesseract
#> # A tibble: 60 × 3
#>    word  confidence bbox          
#>    <chr>      <dbl> <chr>         
#>  1 This        96.6 36,92,96,116  
#>  2 is          96.9 109,92,129,116
#>  3 a           96.3 141,98,156,116
#>  4 lot         96.3 169,92,201,116
#>  5 of          96.5 212,92,240,116
#>  6 12          96.5 251,92,282,116
#>  7 point       96.5 296,92,364,122
#>  8 text        96.5 374,93,427,116
#>  9 to          96.9 437,93,463,116
#> 10 test        97.0 474,93,526,116
#> # … with 50 more rows