面部识别----考勤打卡、注册登录、面部支付等等...感觉很高大上，又很方便，下面用python中的框架--django完成一个注册登录的功能，调用百度AI的接口，面部识别在网上也有好多教程，可以自己建模，训练模型，但是这都需要大量的数据去提高模型的准确度，我们直接用了百度AI的接口，十分的快捷、高效、准确，下来码一下代码啦！！
首先需要在百度AI官网注册一个应用，免费，并提供强大的人脸库。
1.注册表单
<div class="tab-content">
<div class="tab-content-inner active" data-content="signup">
<!-- <form action="{% url 'regist' %}" method="POST"> -->
<div class="row form-group">
<div class="col-md-12">
<input type="text" class="form-control" id="username" placeholder="用户名">
</div>
</div>
<div class="row form-group">
<div class="col-md-12">
<input type="text" class="form-control" id="mobile" placeholder="手机号">
</div>
</div>
<div class="row form-group">
<div class="col-md-12">
<input type="password" class="form-control" id="password" placeholder="密码">
</div>
</div>
<div class="row form-group">
<div class="col-md-12">
<!-- <input type="text" class="form-control" id="mobile_code" placeholder="验证码">
<input type="button" value=" 获取验证码" id="zphone"> -->
</div>
</div>
<div class="row form-group">
<div class="col-md-12">
<label for="password2"><font color='green'>新用户点击注册会有面部特征收集哦！</font></label>
</div>
</div>
<div class="row form-group">
<div class="col-md-12">
<input type="submit" class="btn btn-primary" value="注册" id="regist">
</div>
</div>
<!-- </form> -->
</div>
2.注册时调用摄像头，ajax封装给后端的数据
<!-- jQuery -->
<script src="../static/assets/js/jquery.min.js"></script>
<!-- jQuery Easing -->
<script src="../static/assets/js/jquery.easing.1.3.js"></script>
<!-- Bootstrap -->
<script src="../static/assets/js/bootstrap.min.js"></script>
<!-- Waypoints -->
<script src="../static/assets/js/jquery.waypoints.min.js"></script>
<!-- Carousel -->
<script src="../static/assets/js/owl.carousel.min.js"></script>
<!-- countTo -->
<script src="../static/assets/js/jquery.countTo.js"></script>
<!-- Magnific Popup -->
<script src="../static/assets/js/jquery.magnific-popup.min.js"></script>
<script src="../static/assets/js/magnific-popup-options.js"></script>
<!-- Main -->
<script src="../static/assets/js/main.js"></script>
<script>
!(function () {
// 老的浏览器可能根本没有实现 mediaDevices，所以我们可以先设置一个空的对象
if (navigator.mediaDevices === undefined) {
navigator.mediaDevices = {};
}
if (navigator.mediaDevices.getUserMedia === undefined) {
navigator.mediaDevices.getUserMedia = function (constraints) {
// 首先，如果有getUserMedia的话，就获得它
var getUserMedia = navigator.webkitGetUserMedia || navigator.mozGetUserMedia || navigator.msGetUserMedia;
// 一些浏览器根本没实现它 - 那么就返回一个error到promise的reject来保持一个统一的接口
if (!getUserMedia) {
return Promise.reject(new Error('getUserMedia is not implemented in this browser'));
}
// 否则，为老的navigator.getUserMedia方法包裹一个Promise
return new Promise(function (resolve, reject) {
getUserMedia.call(navigator, constraints, resolve, reject);
});
}
}
const constraints = {
video: true,
audio: false
};
videoPlaying = false;
v = document.getElementById('v');
promise = navigator.mediaDevices.getUserMedia(constraints);
promise.then(stream => {
// 旧的浏览器可能没有srcObject
if ("srcObject" in v) {
v.srcObject = stream;
} else {
// 防止再新的浏览器里使用它，应为它已经不再支持了
v.src = window.URL.createObjectURL(stream);
}
v.onloadedmetadata = function (e) {
v.play();
videoPlaying = true;
};
}).catch(err => {
console.error(err.name + ": " + err.message);
})
document.getElementById('regist').addEventListener('click', function () {
if (videoPlaying) {
mycanvas = document.getElementById('canvas');
mycanvas.width = v.videoWidth;
mycanvas.height = v.videoHeight;
mycanvas.getContext('2d').drawImage(v, 0, 0);
// 图片数据转换成数组
data = mycanvas.toDataURL('image/webp');
document.getElementById('photo').setAttribute('src', data);
// ajax提交数据到后台
$.ajax({
type:"POST",
url:'http://127.0.0.1:8000/regist/',
data:{username:$("#username").val(),mobile:$('#mobile').val(),password:$('#password').val(),mobile_code:$('#mobile_code').val(),imagecontent:data},
dataType:"json",
success:function(data){
alert(data.result)
$('#resText').text(data['result']);
if(data.code == 200){
window.location.href='http://127.0.0.1:8000/home/'
}else{
alert(data.result);
}
}
})
}
}, false);
3.将已经注册的应用中的各种id和key贴上来
# 导入百度AI from django.apps import AppConfig from aip import AipFace import json # django内置事务 from django.db import transaction # 导入状态码 from jyapp.ErrorCode import * # 官网给出的状态码，通过pandas读出保存到 # 百度AI基本信息 class AppConfig(AppConfig): name = '' APP_ID = '' API_KEY = '' SECRECT_KEY = '' client = AipFace(APP_ID,API_KEY,SECRECT_KEY) client.setConnectionTimeoutInMillis(1000*5) client.setSocketTimeoutInMillis(1000*5)
4.注册接口，按照接口文档传入必须的参数，手机验证码功能已在本文中注释掉，需要时自行百度。
# 注册
class Regist(View):
def get(self,request):
return render(request,'moban_index.html')
def post(self,request):
# 获取前端数据
imagecontent = request.POST.get('imagecontent')
username = request.POST.get('username')
mobile = request.POST.get('mobile')
password = request.POST.get('password')
# mobile_code = request.POST.get('mobile_code')
# print(imagecontent,username,mobile,password,mobile_code)
# mobile_code_right = request.session.get('message_code')
if not all([imagecontent,username,mobile,password]):
return JsonResponse({'result':'注册信息不能为空'})
# if mobile_code != mobile_code_right:
# return JsonResponse({'result':'请输入正确的验证码'})
else:
# 验证该用户是否存在
user = models.User.objects.filter(mobile=mobile)
if user:
return JsonResponse({'result':'该用户已存在，请直接登录'})
else:
try:
# 引入事务
with transaction.atomic():
# 分割字符串
base_data = imagecontent.split(',')[1]
# base64解码
base64_decode = base64.b64decode(base_data)
# 图片写入本地
with open('static/image/'+mobile+'.jpeg', 'wb') as f:
f.write(base64_decode)
# 添加到mysql数据库
models.User.objects.create(
imagecontent = 'static/image/'+mobile+'.jpeg', # 可以根据需求是否保存注册照片到数据库，也可以通过百度AI人脸库查看
username = username,
mobile = mobile,
password = password,
)
imageType = 'BASE64'
groupId = 'usergroup' # 自定义
userId = mobile
# 加入可选参数
options = {}
options['user_info'] = username
options['quality_control'] = 'NORMAL'
options['liveness_control'] = 'LOW'
result = AppConfig.client.addUser(base_data,imageType,groupId,userId,options)
print(result)
error_code = result['error_code']
if isinstance(error_code,int) and error_code == 0:
request.session['mobile'] = mobile
return JsonResponse({'code':200,'result':'注册成功'})
# return JsonResponse({'result':'注册成功'})
else:
error = ErrorCode().getErrorInfo(error_code)
return JsonResponse({'result':'{}'.format(error)})
except:
return JsonResponse({'result':'注册失败'})
5.登录.html
<div class="tab-content-inner" data-content="login">
<!-- <form action="{% url 'login' %}" method="POST"> -->
<div class="row form-group">
<div class="col-md-12">
<input type="text" class="form-control" id="mobile1" placeholder="请输入手机号">
</div>
</div>
<div class="row form-group">
<div class="col-md-12">
<input type="password" class="form-control" id="password1" placeholder="请输入密码">
</div>
</div>
<div class="row form-group">
<div class="col-md-12">
<input type="submit" class="btn btn-primary" value="密码登陆" id="login">
<input type="submit" class="btn btn-primary" value="人脸登陆" id="login_face">
</div>
</div>
<!-- </form> -->
</div>
6.ajax封装登录信息
document.getElementById('login_face').addEventListener('click', function () {
if (videoPlaying) {
mycanvas = document.getElementById('canvas');
mycanvas.width = v.videoWidth;
mycanvas.height = v.videoHeight;
mycanvas.getContext('2d').drawImage(v, 0, 0);
data = mycanvas.toDataURL('image/webp');
document.getElementById('photo').setAttribute('src', data);
$.ajax({
type:"POST",
url:'http://127.0.0.1:8000/login_face/',
data:{mobile:$('#mobile1').val(),imagecontent:data},
dataType:"json",
success:function(data){
$('#resText').text(data['result']);
document.getElementById('photo').setAttribute('src','static/'+data['point72src']);
console.log(data['point72src'])
if(data.code == 200){
alert(data.result)
window.location.href='http://127.0.0.1:8000/idcard/'
}else{
alert(data.result);
}
}
})
}
}, false);
7.人脸快速登录
class Login_face(View):
def get(self,request):
return render(request,'moban_index.html')
def post(self,request):
imagecontent = request.POST.get('imagecontent')
mobile = request.POST.get('mobile')
if not all([imagecontent,mobile]):
return JsonResponse({'code':100,'result':'登录信息不能为空'})
else:
user = models.User.objects.filter(mobile=mobile)
if not user:
return JsonResponse({'code':113,'result':'用户不存在'})
else:
base_data = imagecontent.split(',')[1]
imageType = 'BASE64'
groupIdList = 'usergroup'
# 加入可选参数
options = {}
options['max_user_num'] = 1
options['quality_control'] = 'NORMAL'
options['liveness_control'] = 'LOW'
# options['user_id'] = mobile
result = AppConfig.client.search(base_data,imageType,groupIdList,options)
print(result)
error_code = result['error_code']
try:
user_id = result['result']['user_list'][0]['user_id']
score = result['result']['user_list'][0]['score']
if isinstance(error_code,int) and error_code == 0 and user_id == mobile and score >= 90:
request.session['mobile'] = mobile
return JsonResponse({'code':200,'result':'快速登录成功'})
else:
error = ErrorCode().getErrorInfo(error_code)
return JsonResponse({'result':'{}'.format(error)})
except:
error = ErrorCode().getErrorInfo(error_code)
return JsonResponse({'result':'{}'.format(error)})
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持自学编程网。
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