Python 基于百度 AI 开放平台 图片识别 封装使用 (验证码识别)
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2022-04-05 19:42:36
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百度AI开放平台链接:https://ai.baidu.com/
图片识别API文档链接:https://ai.baidu.com/docs#/OCR-API-GeneralBasic/db0895e7
应用注册链接:https://console.bce.baidu.com/ai/?fromai=1#/ai/ocr/app/list
#coding=utf-8
__author__ = 'kai.yang'
__date__ = '2019/10/16 22:53'
import requests
import json
import base64
import time
class baiduCode(object):
@classmethod
def get_token(cls):
"""
当前函数只用调用一次,用来获取当前账号的token
:return:
"""
# 标记当前精准识别是否使用完
cls.curr_url = ''
cls.basic_flag = False
cls.max_num = 5
cls.login_url = 'https://aip.baidubce.com/oauth/2.0/token'
cls.login_params = {
'grant_type': 'client_credentials',
'client_id': 'xxxxxxxxxxxxxxxxxxxxxxxx',
'client_secret': 'xxxxxxxxxxxxxxxxxxxxxxxx'
}
cls.headers = {
'Content-Type': 'application/x-www-form-urlencoded'
}
response = requests.post(cls.login_url, params=cls.login_params, headers=cls.headers)
result = json.loads(response.text)
cls.token = result['access_token']
@classmethod
def get_code(cls, path='', url=''):
cls.num = 0
# 普通图片识别的请求链接,正确率50%(测试了500张图片)
cls.general_basic_url = 'https://aip.baidubce.com/rest/2.0/ocr/v1/general_basic'
# 高精度图片识别的请求链接,正确率80%(测试了500张图片)
cls.accurate_basic_url = 'https://aip.baidubce.com/rest/2.0/ocr/v1/accurate_basic'
if path:
if not cls.basic_flag:
cls.curr_url = cls.accurate_basic_url
with open(path, 'rb') as f:
base64_data = base64.b64encode(f.read())
base = base64_data.decode()
cls.basic_params = {
'image': base,
'access_token': cls.token
}
elif url:
cls.curr_url = cls.general_basic_url
cls.basic_params = {
'url': url,
'access_token': cls.token
}
else:
raise ValueError('当前path和url参数均错误')
time.sleep(0.5)
while True:
try:
response = requests.post(cls.curr_url, params=cls.basic_params, headers=cls.headers)
result = json.loads(response.text)
# 判断当前精准识别是否被使用完
try:
result['words_result']
except Exception as e:
print(e)
cls.num += 1
if cls.num > cls.max_num:
raise ValueError('当前尝试的错误次数超过%d次,请重新调用'%(cls.max_num))
cls.basic_flag = True
cls.curr_url = cls.general_basic_url
continue
code = result['words_result'][0]['words']
return code
break
except Exception as e:
print('error: ', e)
cls.num += 1
if cls.num > cls.max_num:
raise ValueError('当前尝试的错误次数超过%d次,请重新调用'%(cls.max_num))
if __name__ == '__main__':
# 当前获取token的函数只用调用一次
baiduCode.get_token()
# 直接传图片的地址就好
code = baiduCode.get_code(path='image/22.png')
print(code)
code = baiduCode.get_code(url='https://www.showapi.com/auth/checkCode?t=1571279918029')
print(code)
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