Python-图片文字识别

  百度AI接口(手写文字识别):https://ai.baidu.com/docs#/OCR-API/9ef46660

  实现效果:

      

  步骤一:接入接口

  进入上述网站申请账号,然后运行相关代码,获取 access_token 即算完成(由于百度json每30天更新一次,故代码中进行日期更新了的,如何获取accss_token也可见代码)

  

  步骤二:功能介绍:用户输入的图片路径可为网络上的url,也可为本机上的地址,为图省事,图片名称为 ValidateCode.jpg ,由于本人接入的的百度AI接口的手写文字识别,所以一般的验证码应该都可以通过,如果想加入其它功能,那么返回json数据就会有所改变,具体可以见API接口,本人是为了简化理解百度文档介绍

     1 request.urlretrieve(imagepath, 'ValidateCode.jpg') # 下载图片 

    更新access_json:因为百度API规定:30天更新一次,所以我就把时间提前了。(别乱搞我的密钥呀,我也是为了分享呀QAQ)

 2   def accesjson():
 3     flag = 0
 4     fromtime = 1546061002    #起始时间
 5     nowtime = int(time.time())
 6 
 7     #2592000恰好为30天,故提前
 8     if nowtime - fromtime > 2000000:
 9         flag = 1
10         gcontext = ssl.SSLContext(ssl.PROTOCOL_TLSv1)
11         # client_id 为官网获取的AK, client_secret 为官网获取的SK
12         host = 'https://aip.baidubce.com/oauth/2.0/token?grant_' \
13                'type=client_credentials&client_id=Ooj730ZD0Rm7E1dmcPwoZX9s&client_secret=dr5T1icZGqK8ZFyTr4wi2AWbtNKMIsNd'
14         req = request.Request(host)
15         response = request.urlopen(req, context=gcontext).read().decode('UTF-8')
16         result = json.loads(response)
17     if flag == 1:
18         return result
19     else:
20         return None

    图片正式识别:注意,接入功能不一样,放回json数据不一样,具体看返回json就明白了

    

 1 #返回图片验证码
 2 def vercode():
 3     f = open('ValidateCode.jpg', 'rb')
 4     img = base64.b64encode(f.read())
 5     #不同百度API接口不一样,传递参数不一样,返回json也不一样
 6     host = 'https://aip.baidubce.com/rest/2.0/ocr/v1/handwriting'
 7     headers = {
 8         'Content-Type': 'application/x-www-form-urlencoded'
 9     }
10     #更换json
11     if accesjson() == None:
12         access_token = '24.18591b2e4c97956e0f830db9f66e5373.2592000.1548646630.282335-15301065'
13     else:
14         access_token = accesjson()
15         print('已更换最新json,欢迎继续使用!')
16     host = host + '?access_token=' + access_token
17 
18     data = {}
19     data['access_token'] = access_token
20     data['image'] = img
21     res = requests.post(url=host, headers=headers, data=data)
22     req = res.json()
23     return req['words_result'][0]['words']

    完整代码:目前可实现的功能就是网络上面的文字图片识别,或本机图片识别(和之前的抖音图片加载类似。)

    拓展:https://ai.qq.com/   (啥B腾讯的API接口,全是PHP,用都知道怎么用,凉凉。)

 1 #!/usr/bin/env python 
 2 # -*- coding: utf-8 -*- 
 3 # @Time : 2018/12/29 10:48 
 4 # @Author : Empirefree 
 5 # @File : 17-2-验证码.py 
 6 # @Software: PyCharm Community Edition
 7 
 8 import base64
 9 import requests
10 from urllib import request
11 import os
12 import ssl
13 import json
14 import time
15 import re
16 
17 def IsHttp(imagepath):
18     if re.search('http', imagepath) != None:
19         return 1
20     else:
21         return 0
22 
23 #下载验证码
24 def downloadpic(imagepath):
25     # imagepath = "http://210.42.38.26:84/jwc_glxt/ValidateCode.aspx"
26     if IsHttp(imagepath):
27         request.urlretrieve(imagepath, 'ValidateCode.jpg')  # 下载图片
28 
29     print(os.path.abspath('ValidateCode.jpg'))
30 
31 #百度限制,每30天更换一次access_json
32 def accesjson():
33     flag = 0
34     fromtime = 1546061002    #起始时间
35     nowtime = int(time.time())
36 
37     #2592000恰好为30天,故提前
38     if nowtime - fromtime > 2000000:
39         flag = 1
40         gcontext = ssl.SSLContext(ssl.PROTOCOL_TLSv1)
41         # client_id 为官网获取的AK, client_secret 为官网获取的SK
42         host = 'https://aip.baidubce.com/oauth/2.0/token?grant_' \
43                'type=client_credentials&client_id=Ooj730ZD0Rm7E1dmcPwoZX9s&client_secret=dr5T1icZGqK8ZFyTr4wi2AWbtNKMIsNd'
44         req = request.Request(host)
45         response = request.urlopen(req, context=gcontext).read().decode('UTF-8')
46         result = json.loads(response)
47     if flag == 1:
48         return result
49     else:
50         return None
51 
52 #返回图片验证码
53 def vercode():
54     f = open('ValidateCode.jpg', 'rb')
55     img = base64.b64encode(f.read())
56     #不同百度API接口不一样,传递参数不一样,返回json也不一样
57     host = 'https://aip.baidubce.com/rest/2.0/ocr/v1/handwriting'
58     headers = {
59         'Content-Type': 'application/x-www-form-urlencoded'
60     }
61     #更换json
62     if accesjson() == None:
63         access_token = '24.18591b2e4c97956e0f830db9f66e5373.2592000.1548646630.282335-15301065'
64     else:
65         access_token = accesjson()
66         print('已更换最新json,欢迎继续使用!')
67     host = host + '?access_token=' + access_token
68 
69     data = {}
70     data['access_token'] = access_token
71     data['image'] = img
72     res = requests.post(url=host, headers=headers, data=data)
73     req = res.json()
74     return req['words_result'][0]['words']
75 
76 def checkcode():
77     imagepath = input('请输入您的图片路径: ')
78     downloadpic(imagepath)
79     str = vercode()
80     return str
81 
82 if __name__ == '__main__':
83 
84     str = checkcode()
85     print(str)
View Code

猜你喜欢

转载自www.cnblogs.com/meditation5201314/p/10235717.html