树莓派人脸识别实际应用：人脸识别门禁

import bluetooth

def servo_init():#初始化指令
    bd_addr = "20:16:08:08:39:75" #arduino连接的蓝牙模块的地址
    port = 1

    sock=bluetooth.BluetoothSocket( bluetooth.RFCOMM )
    sock.connect((bd_addr, port)) #创建连接

    sock.send("1") #发送数据
    sock.close()  #关闭连接

def bt_open():#开门指令
    bd_addr = "20:16:08:08:39:75" 
    port = 1

    sock=bluetooth.BluetoothSocket( bluetooth.RFCOMM )
    sock.connect((bd_addr, port)) 

    sock.send("2") 
    sock.close()  

def bt_close():关门指令
    bd_addr = "20:16:08:08:39:75" 
    port = 1

    sock=bluetooth.BluetoothSocket( bluetooth.RFCOMM )
    sock.connect((bd_addr, port)) 

    sock.send("3") 
    sock.close()

#include<Servo.h>
Servo myservo;
int pos = 0;

void setup()  
{  
 Serial.begin(9600);  
 myservo.attach(9); 
 myservo.write(0);
 delay(10000);
}  

void loop()  
{   
   while(Serial.available())  //读取HC-05接收到的字符串
   {  char c;
      c=Serial.read();
      Serial.println (c);
      switch(c){
        case '1':servo_init();
        break;
        case '2':open_the_door();
        break;
        case '3':close_the_door();
        break;
        default:servo_init();

      }
   }

}

void servo_init()  //舵机初始化
{   
  myservo.write(0);
  delay(1000);
}

void open_the_door()  //舵机开门
{  
    for (pos = 0; pos <= 180; pos += 1) { 
    myservo.write(pos);            
    delay(5);                       
  }
}

void close_the_door()  //舵机关门
{  
    for (pos = 180; pos >= 0; pos -= 1) { 
    myservo.write(pos);              
    delay(5);   
    }
}

from aip import AipFace
from picamera import PiCamera
import urllib.request
import RPi.GPIO as GPIO
import base64
import time
import bluetooth

from bluetooth_test import bt_open,servo_init,bt_close
#百度人脸识别API账号信息
APP_ID = '18332624'
API_KEY = '2QoqxCzAsZGT9k5CMeaIlPBs'
SECRET_KEY ='9wOlqd4sPvLc7ZKtLxMlBVkcikXHZ4rz'
client = AipFace(APP_ID, API_KEY, SECRET_KEY)#创建一个客户端用以访问百度云
#图像编码方式
IMAGE_TYPE='BASE64'
camera = PiCamera()#定义一个摄像头对象
#用户组
GROUP = 'yusheng01'

#照相函数
def getimage():
    camera.resolution = (1024,768)#摄像界面为1024*768
    camera.start_preview()#开始摄像
    time.sleep(2)
    camera.capture('faceimage.jpg')#拍照并保存
    time.sleep(2)
#对图片的格式进行转换
def transimage():
    f = open('faceimage.jpg','rb')
    img = base64.b64encode(f.read())
    return img
#上传到百度api进行人脸检测
def go_api(image):
    result = client.search(str(image, 'utf-8'), IMAGE_TYPE, GROUP);#在百度云人脸库中寻找有没有匹配的人脸
    if result['error_msg'] == 'SUCCESS':#如果成功了
        name = result['result']['user_list'][0]['user_id']#获取名字
        score = result['result']['user_list'][0]['score']#获取相似度
        if score > 80:#如果相似度大于80
            if name == 'yusheng_01':
                print("欢迎%s !" % name)
                time.sleep(1)
            if name == 'danli':
                print("欢迎%s !" % name)
                time.sleep(3)
            if name == "yusheng_02":
                print("欢迎%s !" % name)
                time.sleep(3)
            if name == "tanwenjie":
                print("欢迎%s !" % name)

        else:
            print("对不起，我不认识你！")
            name = 'Unknow'
            return 0
        curren_time = time.asctime(time.localtime(time.time()))#获取当前时间

        #将人员出入的记录保存到Log.txt中
        f = open('Log.txt','a')
        f.write("Person: " + name + "     " + "Time:" + str(curren_time)+'\n')
        f.close()
        return 1
    if result['error_msg'] == 'pic not has face':
        print('检测不到人脸')
        time.sleep(2)
        return -1
    else:
        print(result['error_code']+' ' + result['error_code'])
        return 0
#主函数
if __name__ == '__main__':
    while True:
        print('准备')
        servo_init()
        if True:
            getimage()#拍照
            img = transimage()#转换照片格式
            res = go_api(img)#将转换了格式的图片上传到百度云
            if(res == 1):#是人脸库中的人
                bt_open()
                print("欢迎你，门已开")
            elif(res == -1):
                print("我没有看见你,我要关门了。。。")
                bt_close()
            else:
                print("关门")
                bt_close()
            print('稍等三秒进入下一个')
            time.sleep(3)