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main.py
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main.py
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#!/usr/env/bin python3
"""
Generate training and test images.
"""
import traceback
import numpy as np
import multiprocessing as mp
from itertools import repeat
import os
import cv2
from libs.config import load_config
from libs.timer import Timer
from parse_args import parse_args
import libs.utils as utils
import libs.font_utils as font_utils
from textrenderer.corpus import RandomCorpus, ChnCorpus, EngCorpus, get_corpus
from textrenderer.renderer import Renderer
from tenacity import retry
lock = mp.Lock()
counter = mp.Value('i', 0)
STOP_TOKEN = 'kill'
flags = parse_args()
cfg = load_config(flags.config_file)
fonts = font_utils.get_font_paths(flags.fonts_dir)
bgs = utils.load_bgs(flags.bg_dir)
corpus = get_corpus(flags.corpus_mode, flags.chars_file, flags.corpus_dir, flags.length)
renderer = Renderer(corpus, fonts, bgs, cfg,
height=flags.img_height,
width=flags.img_width,
clip_max_chars=flags.clip_max_chars,
debug=flags.debug,
gpu=flags.gpu,
strict=flags.strict)
def start_listen(q, fname):
""" listens for messages on the q, writes to file. """
f = open(fname, mode='a', encoding='utf-8')
while 1:
m = q.get()
if m == STOP_TOKEN:
break
try:
f.write(str(m) + '\n')
except:
traceback.print_exc()
with lock:
if counter.value % 1000 == 0:
f.flush()
f.close()
@retry
def gen_img_retry(renderer):
try:
return renderer.gen_img()
except Exception:
print("Retry gen_img")
raise Exception
def generate_img(img_index, q):
global flags, lock, counter
# Make sure different process has different random seed
np.random.seed()
im, word = gen_img_retry(renderer)
base_name = '{:08d}'.format(img_index)
if not flags.viz:
fname = os.path.join(flags.save_dir, base_name + '.jpg')
cv2.imwrite(fname, im)
label = "{} {}".format(base_name, word)
q.put(label)
with lock:
counter.value += 1
print_end = '\n' if counter.value == flags.num_img else '\r'
if counter.value % 100 == 0 or counter.value == flags.num_img:
print("{}/{} {:2d}%".format(counter.value,
flags.num_img,
int(counter.value / flags.num_img * 100)),
end=print_end)
else:
utils.viz_img(im)
def sort_labels(tmp_label_fname, label_fname):
lines = []
with open(tmp_label_fname, mode='r', encoding='utf-8') as f:
lines = f.readlines()
lines = sorted(lines)
with open(label_fname, mode='w', encoding='utf-8') as f:
for line in lines:
f.write(line[9:])
def restore_exist_labels(label_path):
# 如果目标目录存在 labels.txt 则向该目录中追加图片
start_index = 0
if os.path.exists(label_path):
start_index = len(utils.load_chars(label_path))
print('Generate more text images in %s. Start index %d' % (flags.save_dir, start_index))
else:
print('Generate text images in %s' % flags.save_dir)
return start_index
if __name__ == "__main__":
if flags.viz == 1:
flags.num_processes = 1
tmp_label_path = os.path.join(flags.save_dir, 'tmp_labels.txt')
label_path = os.path.join(flags.save_dir, 'labels.txt')
manager = mp.Manager()
q = manager.Queue()
start_index = restore_exist_labels(label_path)
timer = Timer(Timer.SECOND)
timer.start()
with mp.Pool(processes=flags.num_processes) as pool:
if not flags.viz:
pool.apply_async(start_listen, (q, tmp_label_path))
pool.starmap(generate_img, zip(range(start_index, start_index + flags.num_img), repeat(q)))
q.put(STOP_TOKEN)
pool.close()
pool.join()
timer.end("Finish generate data")
if not flags.viz:
sort_labels(tmp_label_path, label_path)