User:Sagsaw

Tesseract Gimp Plug-in

I threw together this python-fu gimp plug-in which OCR's the selected portion of an image using tesserect and then opens the resulting text in open office.

#!/usr/bin/env python
import os
import tempfile
import time
import gimpfu
import gimp
import subprocess

def do_ocr(Image, Drawable):
    #Create a new image from the selection
    gimpfu.pdb.gimp_edit_copy(Drawable)
    NewImage = gimpfu.pdb.gimp_edit_paste_as_new()
    #Convert image to grayscale and flatten
    if gimpfu.pdb.gimp_drawable_is_gray(NewImage.active_layer) == 0:
        gimpfu.pdb.gimp_image_convert_grayscale(NewImage)
    NewLayer = gimpfu.pdb.gimp_image_flatten(NewImage)
    #Save as tiff in a temporary file
    TempDir = tempfile.mkdtemp()
    print TempDir
    try:
        gimpfu.pdb.file_tiff_save(NewImage, NewLayer, "%s/image.tif" % TempDir, "%s/image.tif" % TempDir, 0)
        try:
            print ["tesseract", "%s/image.tif" % TempDir, "%s/image" % TempDir]
            gimpfu.pdb.gimp_progress_set_text("Performing optical character regognition.")
            retval = subprocess.call(["tesseract", "%s/image.tif" % TempDir, "%s/image" % TempDir])
            try:
                if retval != 0:
                    gimpfu.pdb.gimp_message("OCR failed with error code %d" % retval)
                else:
                    subprocess.Popen(["/usr/bin/ooffice", "-write", "%s/image.txt" % TempDir])
                    #Allow time for open office to open.
                    time.sleep(5)
                    
            finally:
                #pass
                os.remove("%s/image.txt" % TempDir)
        finally:
            #pass
            os.remove("%s/image.tif" % TempDir)
    finally:
        #pass
        os.rmdir(TempDir)

gimpfu.register(
               "tesseract_ocr",
               "Extract text from the selection using OCR.",
               "Extract text from the selection using OCR.",
               "Mark Moss",
               "Mark Moss",
               "2008-2009",
               "<Image>/Tools/OC_R",
               "RGB*, GRAY*",
               [],
               [],
               do_ocr)

gimpfu.main()