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#!/usr/bin/env python3
import io
import argparse
import unicodedata
from PIL import Image
import sys
import codecs
sys.stdout = codecs.getwriter('utf8')(sys.stdout)
sys.stderr = codecs.getwriter('utf8')(sys.stderr)
#
# command line arguments
#
arg_parser = argparse.ArgumentParser('''Creates tesseract box files for given (line) image text pairs''')
# Text ground truth
arg_parser.add_argument('-t', '--txt', nargs='?', metavar='TXT', help='Line text (GT)', required=True)
# Image file
arg_parser.add_argument('-i', '--image', nargs='?', metavar='IMAGE', help='Image file', required=True)
args = arg_parser.parse_args()
#
# main
#
# load image
with open(args.image, "rb") as f:
width, height = Image.open(f).size
# load gt
with io.open(args.txt, "r", encoding='utf-8') as f:
lines = f.read().strip().split('\n')
for line in lines:
if line.strip():
for i in range(1, len(line)):
char = line[i]
prev_char = line[i-1]
if unicodedata.combining(char):
print(u"%s %d %d %d %d 0" % ((prev_char + char), 0, 0, width, height))
elif not unicodedata.combining(prev_char):
print(u"%s %d %d %d %d 0" % (prev_char, 0, 0, width, height))
if not unicodedata.combining(line[-1]):
print(u"%s %d %d %d %d 0" % (line[-1], 0, 0, width, height))
print(u"%s %d %d %d %d 0" % ("\t", width, height, width+1, height+1))
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