Tesseract.tess_pipeline_lstm_box

Tesseract.tess_pipeline_lstm_box — Function

tess_pipeline_lstm_box(
    pipe::TessPipeline,
    filename::AbstractString
)::Bool

Generate a LSTM BOX file from the pipeline and save it to the specified file. Returns false if there is a problem adding the LSTM BOX generator to the output.

Arguments:

T	Name	Default	Description
R	pipe		The pipline to collect the LSTM BOX from.
R	filename		The file to write the LSTM BOX to.

Details:

If the file exists it will be overwritten.

Examples:

using Tesseract

# Generate some pages to load.
write("page01.tiff", sample_tiff())
write("page02.tiff", sample_tiff())
write("page03.tiff", sample_tiff())

download_languages() # Make sure we have the data files.

instance = TessInst()
pipeline = TessPipeline(instance)

tess_pipeline_lstm_box(pipeline, "My Book.box")

tess_run_pipeline(pipeline, "My First Book") do add
    add(pix_read("page01.tiff"), 72)
    add(pix_read("page02.tiff"), 72)
    add(pix_read("page03.tiff"), 72)
    true
end

for line in readlines("My Book.box")[1:10]
    println(line)
end

# output

N 11 577 422 591 0
o 11 577 422 591 0
  11 577 422 591 0
o 11 577 422 591 0
n 11 577 422 591 0
e 11 577 422 591 0
  11 577 422 591 0
w 11 577 422 591 0
o 11 577 422 591 0
u 11 577 422 591 0

source

tess_pipeline_lstm_box(
    pipe::TessPipeline
)::Union{TessOutput{String}, Nothing}

Generate a LSTM BOX file from the pipeline and save it to a string. Returns nothing if there is a problem adding the LSTM BOX generator to the output.

Arguments:

T	Name	Default	Description
R	pipe		The pipline to collect the LSTM BOX data from.

Examples:

using Tesseract

# Generate some pages to load.
write("page01.tiff", sample_tiff())
write("page02.tiff", sample_tiff())
write("page03.tiff", sample_tiff())

download_languages() # Make sure we have the data files.

instance = TessInst()
pipeline = TessPipeline(instance)

book = tess_pipeline_lstm_box(pipeline)

tess_run_pipeline(pipeline, "My First Book") do add
    add(pix_read("page01.tiff"), 72)
    add(pix_read("page02.tiff"), 72)
    add(pix_read("page03.tiff"), 72)
end

for line in split(book[], "\n")[1:10]
    println(line)
end

# output

N 11 577 422 591 0
o 11 577 422 591 0
  11 577 422 591 0
o 11 577 422 591 0
n 11 577 422 591 0
e 11 577 422 591 0
  11 577 422 591 0
w 11 577 422 591 0
o 11 577 422 591 0
u 11 577 422 591 0

source

tess_pipeline_lstm_box(
    func::Function,
    pipe::TessPipeline
)::Bool

Generate a LSTM BOX file from the pipeline and pass it back to the client via a callback. Returns false if there is a problem adding the LSTM BOX generator to the output.

Arguments:

T	Name	Default	Description
R	func		The function to call with the lines of text.
R	pipe		The pipline to collect the LSTM BOX data from.

Details:

The text will be passed to the caller one line at a time. The "\n" line terminator will be included with the text.

Examples:

using Tesseract

# Generate some pages to load.
write("page01.tiff", sample_tiff())
write("page02.tiff", sample_tiff())
write("page03.tiff", sample_tiff())

download_languages() # Make sure we have the data files.

instance = TessInst()
pipeline = TessPipeline(instance)

count = 0
tess_pipeline_lstm_box(pipeline) do line
    global count
    if count < 10
        print(line)
    end
    count += 1
end

tess_run_pipeline(pipeline, "My First Book") do add
    add(pix_read("page01.tiff"), 72)
    add(pix_read("page02.tiff"), 72)
    add(pix_read("page03.tiff"), 72)
end

# output

N 11 577 422 591 0
o 11 577 422 591 0
  11 577 422 591 0
o 11 577 422 591 0
n 11 577 422 591 0
e 11 577 422 591 0
  11 577 422 591 0
w 11 577 422 591 0
o 11 577 422 591 0
u 11 577 422 591 0
true

source