tess_text_box(
    inst::TessInst,
    page::Integer = Int32(1)
)::Union{String, Nothing}

Retrieve the boxes for the identified characters on the page. If there is an error 'nothing' is returned.

Arguments:

Details:

This method will call tess_recognize() if it has not been called yet for the image. The results are primarly useful for training purposes.

Each line in the result is a character identified with 6 values:

• The character that was recognized.
• The left edge of the character measured in pixels from the left edge.
• The bottom edge of the character measured in pixels from the bottom of the image.
• The right edge of the character measured in pixels from the left edge.
• The top edge of the character measured in pixels from the bottom of the image.
• The page used in the recogniztion 0 based.

Example:

using Tesseract

download_languages()

instance = TessInst()
pix = sample_pix()

tess_image(instance, pix)
tess_resolution(instance, 72)

box = tess_text_box(instance)

for line in split(box, '\n'; keepempty = false)[1:5]
  println(line)
end

# output

N 11 580 17 591 0
o 19 580 25 588 0
o 35 580 41 588 0
n 43 580 49 588 0
e 51 580 57 588 0

See also: tess_unlv, tess_lstm_box, tess_word_box