本文实例为大家分享了python实现人脸签到系统的具体代码，供大家参考，具体内容如下

简易版人脸签到/签退系统

管理员可进行录入人脸操作，以及导出各类签到情况表；

普通学生只可人脸识别进行签到签退操作。

face_Recognizer.py

import cv2
import os
import numpy as np
from PIL import Image #pillow
import pyttsx3
import sys
import test.student_sql as connect #导入py
import test.recognizer_sql as baseConnect #导入py
import time
import json

def makeDir(engine):
 flag= 0
 if not os.path.exists("face_trainer"):
  print("创建预训练环境")
  engine.say('检测到第一次启动，未检测到环境，正在创建环境')
  engine.say('正在创建预训练环境')
  os.mkdir("face_trainer")
  engine.say('创建成功')
  engine.runAndWait()
  flag=1
 if not os.path.exists("Facedata"):
  print("创建训练环境")
  engine.say('正在创建训练环境')
  os.mkdir("Facedata")
  engine.say('创建成功')
  engine.runAndWait()
  flag=1
 return flag

def getFace(cap,path_id):
 # 调用笔记本内置摄像头，所以参数为0，如果有其他的摄像头可以调整参数为1，2
 #cap = cv2.VideoCapture(0)
 #xml文件为自己的文件路径
 face_detector = cv2.CascadeClassifier(r'F:\npyWorkspace\venv\Lib\site-packages\cv2\data\haarcascade_frontalface_default.xml')
 #face_id = input('\n enter user id:')
 print('\n Initializing face capture. Look at the camera and wait ...')
 count = 0
 while True:
  # 从摄像头读取图片
  sucess, img = cap.read()
  # 转为灰度图片
  gray = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY)
  # 检测人脸
  faces = face_detector.detectMultiScale(gray, 1.3, 5)
  for (x, y, w, h) in faces:
   cv2.rectangle(img, (x, y), (x+w, y+w), (255, 0, 0))
   count += 1
   # 保存图像
   cv2.imwrite("Facedata/User." + str(path_id) + '.' + str(count) + '.jpg', gray[y: y + h, x: x + w])
   cv2.imshow('image', img)
  # 保持画面的持续。
  k = cv2.waitKey(1)
  if k == 27: # 通过esc键退出摄像
   break
  elif count >= 100: # 得到1000个样本后退出摄像
   break
 cv2.destroyAllWindows()

def getImagesAndLabels(path, detector):
 imagePaths = [os.path.join(path, f) for f in os.listdir(path)] # join函数的作用
 faceSamples = []
 ids = []
 for imagePath in imagePaths:
  PIL_img = Image.open(imagePath).convert('L') # convert it to grayscale
  img_numpy = np.array(PIL_img, 'uint8')
  id = int(os.path.split(imagePath)[-1].split(".")[1])
  faces = detector.detectMultiScale(img_numpy)
  for (x, y, w, h) in faces:
   faceSamples.append(img_numpy[y:y + h, x: x + w])
   ids.append(id)
 return faceSamples, ids


def trainFace():
 # 人脸数据路径
 path = 'Facedata'
 recognizer = cv2.face.LBPHFaceRecognizer_create()
 detector = cv2.CascadeClassifier(r'F:\npyWorkspace\venv\Lib\site-packages\cv2\data\haarcascade_frontalface_default.xml')
 print('Training faces. It will take a few seconds. Wait ...')
 faces, ids = getImagesAndLabels(path, detector)
 recognizer.train(faces, np.array(ids))
 recognizer.write(r'face_trainer\trainer.yml')
 print("{0} faces trained. Exiting Program".format(len(np.unique(ids))))

def checkFace(cam,names,engine,sign_flag):
 sex = {"female":"女士","male":"先生"}
 recognizer = cv2.face.LBPHFaceRecognizer_create()
 recognizer.read('face_trainer/trainer.yml')
 cascadePath = r"F:\npyWorkspace\venv\Lib\site-packages\cv2\data\haarcascade_frontalface_default.xml"
 faceCascade = cv2.CascadeClassifier(cascadePath)
 font = cv2.FONT_HERSHEY_SIMPLEX
 idnum = 0
 names = ['yumengzhen', 'dujuanjuan','litingting','kangming','wangyizhe']
 #cam = cv2.VideoCapture(0)
 minW = 0.1 * cam.get(3)
 minH = 0.1 * cam.get(4)
 while True:
  ret, img = cam.read()
  gray = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY)
  faces = faceCascade.detectMultiScale(
   gray,
   scaleFactor=1.2,
   minNeighbors=5,
   minSize=(int(minW), int(minH))
  )
  for (x, y, w, h) in faces:
   cv2.rectangle(img, (x, y), (x + w, y + h), (0, 255, 0), 2)
   idnum, confidence = recognizer.predict(gray[y:y + h, x:x + w])
   if confidence < 100:
    Name =connect.readName(idnum) #connect 传入ID 学生信息表找到 返回 name
    Sex =connect.readSex(idnum) #connect ID 学生信息表找到 返回 Sex
    StudentID =connect.readStudentID(idnum) #connect ID 学生信息表找到 返回 studentID
    #idnum = names[idnum] #利用数据库 读取学生信息表 该id 对应的name
    confidence = "{0}%".format(round(100 - confidence))
    if sign_flag=='0': #签到
     say(engine, "欢迎   "+Name+ sex[Sex]+"   签到成功 ")
     baseConnect.insertd(idnum,Name,StudentID,Sex) #签到表中 插入签到信息
     print("欢迎  "+Name+ sex[Sex] + "签到成功 ")
    else :
     say(engine, "欢迎   "+Name+ sex[Sex]+"   签退成功 ")
     baseConnect.insertt(idnum,Name,StudentID,Sex) #签到表中 插入签退信息
     print("欢迎  "+Name+ sex[Sex] + "签退成功 ")

    cv2.imshow("img",img)
    os.system("pause")
    return
   else:
    idnum = "unknown"
    confidence = "{0}%".format(round(100 - confidence))
   cv2.putText(img, str(idnum), (x + 5, y - 5), font, 1, (0, 0, 255), 1)
   cv2.putText(img, str(confidence), (x + 5, y + h - 5), font, 1, (0, 0, 0), 1)
  cv2.imshow('camera', img)
  k = cv2.waitKey(10)
  if k == 27:
   break
 cam.release()
 cv2.destroyAllWindows()


def say(engine,str):
 engine.say(str)
 engine.runAndWait()

def admission(): #录入信息模块
 #names = {"yumengzhen":0,"dujuanjuan":1,"litingting":2}
 say(engine, "请输入您的学号   ")
 StudentID = input("请输入学号：")
 # 读取数据库信息表 取出Name 对应ID
 ID=connect.readIDbaseStudentID(StudentID) #connect 传入name 学生信息表找到 返回 ID
 if ID==-1:#没有找到该学生插入学生信息
  while True:
   say(engine,"没有找到该学生信息 输人 0 注册 1重新输入")
   op=input("\n 没有找到该学生信息 输人数字 0 注册学生信息 1重新输入")
   if op=='0':
    Name,studentID,Sex=input("输入学生信息： Name studentID Sex").split()
    connect.insert(Name,studentID,Sex) #插入学生信息信息
   else:
    StudentID = input("请输入学号：")
   ID=connect.readIDbaseStudentID(StudentID) #connect 传入name 学生信息表找到 返回 ID
   if ID!=-1 :
    break
 say(engine, "正在打开摄像头")
 cam = cv2.VideoCapture(0)
 say(engine, "注视摄像头，开始采集人脸数据")
 getFace(cam, ID) # 实际传入的是id
 cam.release()


if __name__ == '__main__':
 names = {"yumengzhen":0,"dujuanjuan":1,"litingting": 2}
 password="123456" #密码
 engine = pyttsx3.init()
 rate = engine.getProperty('rate')
 engine.setProperty('rate', rate - 20)
 flag=makeDir(engine)
 #trainFace()
 while True:
  if flag==1 :
   flag = 0
   say(engine, "首次使用 没有人脸信息 ")
   say(engine, "是否要录入新的人脸信息  ")
   say(engine, "输入0 代表是 输入其他表示退出")
   value = input("0：是 or other：否")
   if value=='0':
    while True:
     admission()
     say(engine, "是否要继续录入新的人脸信息  ")
     say(engine, "输入0 代表是 输入其他表示退出")
     firstflag = input("0：是 其他：退出")
     if firstflag != '0':
      break
    say(engine, "采集完毕，开始训练")
    trainFace()
    say(engine, "训练完毕   ")

  #say(engine, "请选择登录方式 ")
  say(engine, "输入 0管理人员模式  1 进入签到/签退模式  2 退出学生签到系统 ")
  user=input("\n0:管理人员模式  1:进入签到/签退模式 2:退出学生签到系统\n")

  if user=='0':
   say(engine, "输入管理员密码 ")
   pd=input("\n输入管理员密码 :\n")
   count=1
   while True:
    if count==3:
     say(engine," 输入密码错误超过3次 强制退出输入  ")
     break

    if password == pd:
     say(engine, "管理员模式 ")
     #say(engine, "输入数字 0 导出签到表  1 导出个人签到表  2 导出时长表  3 导出信息表  4 录入人脸信息 5 退出")
     op = input("\n0:导出所有同学签到表 1:导出个人签到表 2:导出所有人员时长表 3:导出学生信息表 4 录入人脸信息 5 退出\n")
     if op == '0':
      baseConnect.sign()#导出签到表
      say(engine, "导出签到表成功 ")
      pass
     elif op == '1':
      say(engine,"输入导出学生的学号")
      StudentID=input("输入导出学生的学号")
      ID=connect.readIDbaseStudentID(StudentID)
      if ID==-1:
       say(engine, "没有该学生信息 ")
      else:
       baseConnect.peoson_sign(StudentID)#导出个人签到表
       Name =connect.readName(ID) #connect 传入ID 学生信息表找到 返回 name
       say(engine, "导出 "+Name+" 信息成功")

     elif op == '2':
      baseConnect.total_time()#导出时长表
      say(engine,"导出时长表成功  ")
     elif op == '3':
      #导出学生信息表
      connect.find_student_all()
      say(engine, "导出学生信息成功  ")
     elif op == '4':
      while True:
       admission()
       say(engine, "是否要继续录入新的人脸信息  ")
       say(engine, "输入0 代表是 输入其他表示退出")
       secondflag = input("0：是 其他：退出")
       if secondflag != '0':
        break
      say(engine, "采集完毕，开始训练")
      trainFace()
      say(engine, "训练完毕   ")
     elif op == '5':
      say(engine, "已退出 管理员模式 ")
      break
     else:
      say(engine, "输入形式错误 请重新输入  ")
    else:
     say(engine, "输入密码错误  请重新输入 ")
     pd = input("\n输入管理员密码 :\n")
     count += 1;

  elif user=='1':
   say(engine, "欢迎进入学生系统签到/签退模式  ")
   sign_flag=0;
   while True:
    say(engine, "输入数字 0 签到  1 签退")
    sign_flag = input("\n0: 签到  1 签退\n")
    if sign_flag=='1' or sign_flag=='0' :
     break
    else :
     say(engine," 请输入正确的输入形式")
   say(engine, "开始人脸识别")
   say(engine, "正在打开摄像头")
   cam = cv2.VideoCapture(0)
   checkFace(cam, names, engine,sign_flag)

  elif user=='2':
   say(engine, "信息已保存")
   say(engine, "再见")
   sys.exit(0)
  else:
   say(engine, "输入错误请重新输入  ")

student_sql.py  

学生

import pymssql as py
import pandas as pd
# 连接数据库，创建学生表，进行表查询，表录入
server = "DESKTOP-XXX"# 连接自己数据库的服务器地址
user = "sa"# 连接帐号
password = "123"# 连接密码
conn = py.connect(server, user, password, "student_message") #获取连接
cursor = conn.cursor() # 获取光标

# 创建表
cursor.execute("""
IF OBJECT_ID('students', 'U') IS NOT NULL
 DROP TABLE students
CREATE TABLE students (
 ID INT NOT NULL,
 name VARCHAR(100),
 StudentID INT,
 Sex VARCHAR(100)
 )
""")
conn.commit()
#第一次运行时建立表，之后再运行无需再建

def insert(Name, studentID, Sex):
  count_students = 0
  try:
   conn = py.connect(server, user, password, "student_message") # 获取连接
   cursor =conn.cursor()
   cursor.execute(' select count(ID) from students')
   for row in cursor:
    count_students = row[0]
    print(row[0])
   cursor.executemany(
    "INSERT INTO students VALUES (%d, %s, %d,%s)",
    [(count_students+1, Name, studentID, Sex)])
  # 你必须调用 commit() 来保持你数据的提交如果你没有将自动提交设置为true
   conn.commit()
   conn.close()
  except py.InterfaceError:
   print("数据库连接出错")
  except py.ProgrammingError:
   print("数据错误，请检查输入的数据")
  except py.OperationalError:
   print("数据错误，请检查输入的数据")


# 导出学生信息表
def find_student_all():
 try:
  conn = py.connect(server, user, password, "student_message") # 获取连接
  cursor =conn.cursor()
  sql = "select * from students"
  df = pd.read_sql(sql, conn)
  df.to_excel('all.xlsx',index=False)
  print('ok')
  conn.commit()
  conn.close()
 except py.InterfaceError:
  print("数据库连接出错")
 except py.ProgrammingError:
  print("数据错误，请检查输入的数据")

#find_student_all()

def readName(idnum):
 Name = -1
 try:
  conn = py.connect(server, user, password, "student_message") # 获取连接
  cursor =conn.cursor()
  cursor.execute(' select Name from students where ID='+str(idnum))
  for row in cursor:
   if row[0]!=[]:
    Name = row[0]
  conn.commit()
  conn.close()
 except py.InterfaceError:
  print("数据库连接出错")
 except py.ProgrammingError:
  print("数据错误，请检查输入的数据")
 return Name

def readIDbaseStudentID(StudentID):
 ID = -1
 try:
  conn = py.connect(server, user, password, "student_message") # 获取连接
  cursor =conn.cursor()
  cursor.execute(' select ID from students where StudentID='+str(StudentID))
  for row in cursor:
   if row[0]!=[]:
    ID = row[0]
  conn.commit()
  conn.close()
 except py.InterfaceError:
  print("数据库连接出错")
 except py.ProgrammingError:
  print("数据错误，请检查输入的数据")
 return ID

def readSex(idnum):
 Sex = -1
 try:
  conn = py.connect(server, user, password, "student_message") # 获取连接
  cursor =conn.cursor()
  cursor.execute(' select Sex from students where ID='+str(idnum))
  for row in cursor:
    if row[0]!=[]:
     Sex = row[0]
  conn.commit()
  conn.close()
 except py.InterfaceError:
  print("数据库连接出错")
 except py.ProgrammingError:
  print("数据错误，请检查输入的数据")
 return Sex


def readID(name):
 # 多个id
 ID = -1
 try:
  conn = py.connect(server, user, password, "student_message") # 获取连接
  cursor =conn.cursor()
  cursor.execute(' select ID from students where name='+'\''+str(name)+'\'')
  for row in cursor:
   if row[0]!=[]:
    ID = row[0]
  conn.commit()
  conn.close()
 except py.InterfaceError:
  print("数据库连接出错")
 except py.ProgrammingError:
  print("数据错误，请检查输入的数据")
 return ID


def readStudentID(idnum):
 StudentID = -1
 try:
  conn = py.connect(server, user, password, "student_message") # 获取连接
  cursor =conn.cursor()
  cursor.execute(' select StudentID from students where ID='+str(idnum))
  for row in cursor:
   if row[0]!=[]:
    StudentID = row[0]
  conn.commit()
  conn.close()
 except py.InterfaceError:
  print("数据库连接出错")
 except py.ProgrammingError:
  print("数据错误，请检查输入的数据")
 return StudentID


# 关闭连接
# conn.close()
#
# # 注：在任何时候，在一个连接下，一次正在执行的数据库操作只会出现一个cursor对象

recognizer_sql.py

import pymssql as py
import time
import pandas as pd

server = "DESKTOP-XXXX"# 连接服务器地址
user = "sa" # 连接帐号
password = "123" # 连接密码
conn = py.connect(server, user, password, "student_message") #获取连接
cursor = conn.cursor() # 获取光标

def insertd(idnum,Name,StudentID,Sex): # 签到
 conn = py.connect(server, user, password, "student_message") # 获取连接
 timenow = time.strftime("%Y-%m-%d %H:%M:%S", time.localtime())
 cursor = conn.cursor()
 cursor.execute("INSERT INTO qiandao VALUES (%d, %s,%d,%s, %s, %s, %s,%d )", (idnum,Name,StudentID,Sex,timenow, '0', '0', 0))
 conn.commit()
 # 必须调用 commit() 来保持数据的提交
def insertt(idnum,Name,StudentID,Sex): # 签退
 conn = py.connect(server, user, password, "student_message") # 获取连接
 cursor = conn.cursor()
 cursor.execute("SELECT starttime FROM qiandao WHERE ID=%s and flag=%d",(idnum,0))
 starttimeget = cursor.fetchone()
 sat = str(tuple(starttimeget))
 timenow = time.strftime("%Y-%m-%d %H:%M:%S", time.localtime())
 timeArray = time.strptime(sat, "('%Y-%m-%d %H:%M:%S',)")
 timeStamp = int(time.mktime(timeArray))
 timecout = time.time() - timeStamp
 m, s = divmod(timecout, 60)
 h, m = divmod(m, 60)
 timepass = str(h) + '小时 ' + str(m) + '分钟 ' + str(s) + '秒'
 print(timepass)
 cursor.executemany("INSERT INTO qiandao VALUES (%d, %s,%d,%s, %s, %s, %s,%d )",
  [(idnum,Name,StudentID,Sex,'0', timenow, timepass, 1)])
 conn.commit()

def peoson_sign(StudentID):# 导出学生信息表_按照学号
 conn = py.connect(server, user, password, "student_message") # 获取连接
 cursor = conn.cursor()
 sql = "select * from qiandao where StudentID=" + str(StudentID)
 df = pd.read_sql(sql, conn)
 df.to_excel(r'E:\01STUDY\20190701\work\openVersion\excel\studentID_sign.xlsx',index=False)
 print('ok')
 conn.commit()

#peoson_sign(2016002105)

def sign():# 导出签到表
 conn = py.connect(server, user, password, "student_message") # 获取连接
 cursor = conn.cursor()
 sql = "select * from qiandao"
 df = pd.read_sql(sql, conn)
 df.to_excel(r'E:\01STUDY\20190701\work\openVersion\excel\sign_all.xlsx', index=False)
 print('ok')
 conn.commit()
#sign()

def total_time():# 导出时长表#sign()
 conn = py.connect(server, user, password, "student_message") # 获取连接
 cursor = conn.cursor()
 sql = "select * from qiandao where convert(nvarchar(max),count) != convert(nvarchar(max),0)"
 df = pd.read_sql(sql, conn)
 df.to_excel(r'E:\01STUDY\20190701\work\openVersion\excel\total_time.xlsx', index=False)
 print('ok')
 conn.commit()

#
# if __name__=='__main':
#  sign()
#  #peoson_sign(2016002105)

conn.close()

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python博客。