python实现验证码识别功能

from PIL import Image 
from aip import AipOcr 
 
file='1-1-7' 
 
# 二值化处理,转化为黑白图片 
def two_value(): 
 for i in range(1, 5): 
 # 打开文件夹中的图片 
 image = Image.open(file+'.jpg') 
 # 灰度图 
 lim = image.convert('L') 
 # 灰度阈值设为165，低于这个值的点全部填白色 
 threshold = 165 
 table = [] 
 
 for j in range(256): 
  if j < threshold: 
  table.append(0) 
  else: 
  table.append(1) 
 
 bim = lim.point(table, '1') 
 bim.save(file+'.1.jpg') 
 
two_value() 
 
# 去除干扰线 
im = Image.open(file+'.1.jpg') 
# 图像二值化 
data = im.getdata() 
w, h = im.size 
black_point = 0 
 
for x in range(1, w - 1): 
 for y in range(1, h - 1): 
 mid_pixel = data[w * y + x] # 中央像素点像素值 
 if mid_pixel < 50: # 找出上下左右四个方向像素点像素值 
  top_pixel = data[w * (y - 1) + x] 
  left_pixel = data[w * y + (x - 1)] 
  down_pixel = data[w * (y + 1) + x] 
  right_pixel = data[w * y + (x + 1)] 
 
  # 判断上下左右的黑色像素点总个数 
  if top_pixel < 5: #小于5比小于10更精确 
  black_point += 1 
  if left_pixel < 5: 
  black_point += 1 
  if down_pixel < 5: 
  black_point += 1 
  if right_pixel < 5: 
  black_point += 1 
  if black_point < 1: 
  im.putpixel((x, y), 255) 
  # print(black_point) 
  black_point = 0 
 
im.save(file+'.2.jpg') 
 
# 去除干扰线 
im = Image.open(file+'.2.jpg') 
# 图像二值化 
data = im.getdata() 
w, h = im.size 
black_point = 0 
 
for x in range(1, w - 1): 
 for y in range(1, h - 1): 
 if x < 2 or y < 2: 
  im.putpixel((x - 1, y - 1), 255) 
 if x > w - 3 or y > h - 3: 
  im.putpixel((x + 1, y + 1), 255) 
 
im.save(file+'.3.jpg') 
 
# 定义常量 
APP_ID = '11352343' 
API_KEY = 'Nd5Z1NkGoLDvHwBnD2bFLpCE' 
SECRET_KEY = 'A9FsnnPj1Ys2Gof70SNgYo23hKOIK8Os' 
 
# 初始化AipFace对象 
aipOcr = AipOcr(APP_ID, API_KEY, SECRET_KEY) 
 
# 读取图片 
filePath=file+'.3.jpg' 
def get_file_content(filePath): 
 with open(filePath, 'rb') as fp: 
 return fp.read() 
 
# 定义参数变量 
options = { 
 'detect_direction': 'true', 
 'language_type': 'CHN_ENG', 
} 
 
# 调用通用文字识别接口 
result = aipOcr.basicGeneral(get_file_content(filePath), options) 
print(result) 
words_result=result['words_result'] 
for i in range(len(words_result)): 
 print(words_result[i]['words'].replace(' ','').replace('.','')) #去掉可能被识别的空格与.