Python借助于AI来实现验证码识别,内含python3示例

2021-09-02|

借助于AI工具来实现验证码识别,内含python3示例
验证码识别的场景十分常见
本文主要讨论作为普通开发者(缺乏/没有Ai学术(教育/实践)背景)的前提下,来低成本快速实现验证码识别

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本次测试的验证码主要有两种
1. 无干扰的纯数字验证码


2. 有干扰的数字加字母验证码


1. 百度AI大脑

https://ai.baidu.com/tech/ocr/general


下边我用python3来示例在

https://console.bce.baidu.com/ai/?fromai=1#/ai/ocr/app/list

这里新建应用


记录appid, apikey, secret key

 复制代码 隐藏代码
import requests 
import base64
import shortuuid
from pprint import pprint

#填上自己的app 信息
appid = ""
key = ""
secret = ""

def Token():
    host = 'https://aip.baidubce.com/oauth/2.0/token?grant_type=client_credentials&client_id={}&client_secret={}'.format(key, secret)
    response = requests.get(host)
    # if response:
        # pprint(response.json())
    return response.json()['access_token']

token =  Token()

request_url = "https://aip.baidubce.com/rest/2.0/ocr/v1/general_basic"
f = open('./code/code.png', 'rb')
img = base64.b64encode(f.read())
params = {"image":img,"language_type":"CHN_ENG"}
# access_token = '[调用鉴权接口获取的token]'
request_url = request_url + "?access_token=" + token
headers = {'content-type': 'application/x-www-form-urlencoded'}
response = requests.post(request_url, data=params, headers=headers)
pprint (response.json())


2 腾讯AI

https://ai.qq.com/product/ocr.shtml#common


腾讯ocr示例在这里新建应用

https://ai.qq.com/console/application/create-app


记录以上app信息 APP_ID,APP_Key

 复制代码 隐藏代码
import base64, hashlib, json, random, string, time
from urllib import parse
import requests
from pprint import pprint

# 填写app信息
app_id = ""
app_key = ""

def GetAccessToken(formdata, app_key):
    dic = sorted(formdata.items(), key=lambda d: d[0])
    sign = parse.urlencode(dic) + '&app_key=' + app_key
    m = hashlib.md5()
    m.update(sign.encode('utf8'))
    return m.hexdigest().upper()

def RecogniseGeneral(app_id, time_stamp, nonce_str, image, app_key):
    host = 'https://api.ai.qq.com/fcgi-bin/ocr/ocr_generalocr'
    formdata = {'app_id': app_id, 'time_stamp': time_stamp, 'nonce_str': nonce_str, 'image': image}
    app_key = app_key
    sign = GetAccessToken(formdata=formdata, app_key=app_key)
    formdata['sign'] = sign
    try:
        r = requests.post(url=host, data=formdata, timeout=20)
    except requests.exceptions.ReadTimeout:
        r = requests.post(url=host, data=formdata, timeout=20)
    if (r.status_code == 200):
        return r.json()
    else:
        print(r.text)

def Recognise(img_path):
    with open(file=img_path, mode='rb') as file:
        base64_data = base64.b64encode(file.read())
    nonce = ''.join(random.sample(string.digits + string.ascii_letters, 32))
    stamp = int(time.time())
    recognise = RecogniseGeneral(app_id=app_id, time_stamp=stamp, nonce_str=nonce, image=base64_data,
                                 app_key=app_key) 
    # for k, v in recognise.items():
    #     print(k, v)
    return recognise

img_path = "./code/code.png"
response = Recognise(img_path)
pprint(response)
code = response['data']['item_list'][0]['itemstring'].replace(" ", "")

print(code)

标签: app response key formdata requests Token import pprint 验证 Recognise
出处: https://www.toutiao.com/a7002456432461447713/

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