python 利用百度API识别图片文字（多线程版）

#!/usr/bin/env python3
# -*- coding: utf-8 -*-
"""
Created on Tue Jun 12 09:37:38 2018
利用百度api实现图片文本识别
@author: XnCSD
"""

import glob
from os import path
import os
from aip import AipOcr
from PIL import Image
from queue import Queue
import threading
import datetime

def convertimg(picfile, outdir):
  '''调整图片大小，对于过大的图片进行压缩
  picfile:  图片路径
  outdir：  图片输出路径
  '''
  img = Image.open(picfile)
  width, height = img.size
  while (width * height > 4000000): # 该数值压缩后的图片大约 两百多k
    width = width // 2
    height = height // 2
  new_img = img.resize((width, height), Image.BILINEAR)
  new_img.save(path.join(outdir, os.path.basename(picfile)))


def baiduOCR(ts_queue):
  """利用百度api识别文本，并保存提取的文字
  picfile:  图片文件名
  outfile:  输出文件
  """
  while not ts_queue.empty():
    picfile = ts_queue.get()
    filename = path.basename(picfile)
    outfile = 'D:\Study\pythonProject\scrapy\IpProxy\port_zidian.txt'
    APP_ID = '' # 刚才获取的 ID，下同
    API_KEY = ''
    SECRECT_KEY = ''
    client = AipOcr(APP_ID, API_KEY, SECRECT_KEY)

    i = open(picfile, 'rb')
    img = i.read()
    print("正在识别图片：\t" + filename)
    message = client.basicGeneral(img) # 通用文字识别，每天 50 000 次免费
    # message = client.basicAccurate(img)  # 通用文字高精度识别，每天 800 次免费
    #print("识别成功！")
    i.close()
    try:
      filename1 = filename.split('.')[0]
      filename1 = ''.join(filename1)
      with open(outfile, 'a+') as fo:
        for text in message.get('words_result'):
          fo.writelines('\'' + filename1 + '\'' + ':' + text.get('words') + ',')
          fo.writelines('\n')
        # fo.writelines("+" * 60 + '\n')
        # fo.writelines("识别图片：\t" + filename + "\n" * 2)
        # fo.writelines("文本内容：\n")
        # # 输出文本内容
        # for text in message.get('words_result'):
        #   fo.writelines(text.get('words') + '\n')
        # fo.writelines('\n' * 2)
      os.remove(filename)
      print("识别成功！")
    except:
      print('识别失败')



    print("文本导出成功！")
    print()
def duqu_tupian(dir):
  ts_queue = Queue(10000)

  outdir = dir
  # if path.exists(outfile):
  #   os.remove(outfile)
  if not path.exists(outdir):
    os.mkdir(outdir)
  print("压缩过大的图片...")
  # 首先对过大的图片进行压缩，以提高识别速度，将压缩的图片保存与临时文件夹中
  try:
    for picfile in glob.glob(r"D:\Study\pythonProject\scrapy\IpProxy\端口\*"):
      convertimg(picfile, outdir)
    print("图片识别...")
    for picfile in glob.glob("tmp/*"):
      ts_queue.put(picfile)
      #baiduOCR(picfile, outfile)
      #os.remove(picfile)
    print('图片文本提取结束！文本输出结果位于文件中。' )
    #os.removedirs(outdir)
    return ts_queue
  except:
    print('失败')

if __name__ == "__main__":

  start = datetime.datetime.now().replace(microsecond=0)
  t = 'tmp'
  s = duqu_tupian(t)
  threads = []
  for i in range(100):
    t = threading.Thread(target=baiduOCR, name='th-' + str(i), kwargs={'ts_queue': s})
    threads.append(t)
  for t in threads:
    t.start()
  for t in threads:
    t.join()
  end = datetime.datetime.now().replace(microsecond=0)
  print('删除耗时：' + str(end - start))