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[讨论交流] 【树莓派】人脸追踪（1）树莓派+百度人脸识别

1、树莓派 VNC Viewer 远程桌面配置教程
http://shumeipai.nxez.com/2018/08/31/raspberry-pi-vnc-viewer-configuration-tutorial.html

需要在目录下添加ssh空白文件以开启SSH功能

使用 ipscan22.exe软件，扫描局域网内ip地址，获取树莓派IP（最好能进路由器查看）
树莓派无法连接vnc，树莓派 vnc viewer 显示 cannot currently show the desktop 的解决方法
树莓派中如何让自己的py程序自己启动
2、新手教程：如何 SSH 进入树莓派
https://linux.cn/article-10888-1.html?pr
3、3.5英寸树莓派触摸屏
https://wiki.dfrobot.com.cn/index.php?title=(SKU:DFR0428)3.5%22_TFT_Touchscreen_for_Raspberry_Pi
4.镜像烧录工具

Win32DiskImager v0.9.zip (sourceforge.net)

开始之前的注意事项： Pi的不同版本可能会有所不同！在将任何东西连接到板上之前，请确保您使用的是正确的。一种快速的检查方法是在Raspberry Pi的终端中键入 pinout ，这将弹出您当前的设置图。

【树莓派】人脸追踪（1）树莓派+百度人脸识别图2

进入 LCD-show 目录

cd /home/pi/LCD-show
ls
sudo ./LCD35-show
切换回 HDMI 显示
cd /home/pi/LCD-show/
sudo ./LCD-hdmi
用户名密码是pi/raspberry

1、网速贼慢，需要进行更换树莓派软件源，包括系统源与系统更新源，操作方法：

# 编辑 `/etc/apt/sources.list` 文件，原文件所有内容，用以下内容取代：
deb http://mirrors.tuna.tsinghua.edu.cn/raspbian/raspbian/ buster main non-free contrib
deb-src http://mirrors.tuna.tsinghua.edu.cn/raspbian/raspbian/ buster main non-free contrib

# 编辑 `/etc/apt/sources.list.d/raspi.list` 文件，原文件所有内容，用以下内容取代：
deb http://mirrors.tuna.tsinghua.edu.cn/raspberrypi/ buster main ui

2、因修改文件权限不够

修改文件权限https://blog.csdn.net/jiangsujiangjiang/article/details/80311018

4、树莓派系统换国内源

https://www.cnblogs.com/xiangzhuo/p/9431502.html

5、树莓派python3导入cv2

https://blog.csdn.net/Hankerchen/article/details/103510024(正在安装中……)

6、子豪兄教你在树莓派上安装OpenCV
https://www.jianshu.com/p/56929416b4a1

用的还是python2.7 +Opencv

[mw_shl_code=python,true]from picamera import PiCamera
from time import sleep
import base64,cv2
import json
"""camera.start_preview()"""
"""sleep(40)"""
"""camera.stop_preview()"""
from aip import AipFace
import RPi.GPIO as GPIO
GPIO.setmode(GPIO.BCM)
GPIO.setwarnings(False)
pan = 27
tilt = 17
GPIO.setup(tilt, GPIO.OUT) # white => TILT
GPIO.setup(pan, GPIO.OUT) # gray ==> PAN
def setServoAngle(servo, angle):
assert angle >=5 and angle <= 175
pwm = GPIO.PWM(servo, 50)
pwm.start(8)
dutyCycle = angle / 18. + 3.
pwm.ChangeDutyCycle(dutyCycle)
sleep(0.1)
pwm.stop()
camera=PiCamera()

"""  APPID AK SK """
APP_ID = '15554766'
API_KEY = 'FVnVC1EiWLdgoZIXe5GByBP3'
SECRET_KEY = 'EteHK89dvmcDefKstYsWf9DairVf9Eox'
client = AipFace(APP_ID, API_KEY, SECRET_KEY)
AngleX=90
AngleY=90
setServoAngle(tilt, AngleX)
setServoAngle(pan, AngleY)
while True:
camera.start_preview()

camera.capture('/home/pi/Desktop/image.jpg')

filePath ="/home/pi/Desktop/image.jpg"
img = cv2.imread(filePath,1)
sleep(0.02)
with open(filePath,"rb") as f:
      base64_data = base64.b64encode(f.read())
#image = str(base64_data,'utf-8') #python3
image = base64_data
imageType = "BASE64"

"""  """
options = {}
options["face_field"] = "age,beauty"
options["max_face_num"] = 1
options["face_type"] = "LIVE"
"""  """
result = client.detect(image, imageType, options)
#result=json.loads(result)
if(result['error_msg'] in "SUCCESS"):
      #print(result['result']['face_list'][0]['location']['left'])
      #print(result['result']['face_list'][0]['location']['width'])
      x=result['result']['face_list'][0]['location']['left']+result['result']['face_list'][0]['location']['width']/2

      y=result['result']['face_list'][0]['location']['top']+result['result']['face_list'][0]['location']['height']/2


      x=int(x)
      y=int(y)
      print(x)
      print(y)
      center = (x, y) #
      if(x>420):
         AngleX-=8
      if(x<380):
         AngleX+=8
      if(AngleX>140):
         AngleX=140
      if(AngleX<30):
         AngleX=30

      if(y>260):
         AngleY-=10
      if(x<220):
         AngleY+=10
      if(AngleY>140):
         AngleY=140
      if(AngleY<30):
         AngleY=30
      setServoAngle(tilt, AngleX)
      setServoAngle(pan, AngleY)
      cv2.circle(img, center, radius=100, color=(0,0,255)) #
cv2.imshow('imshow',img)
key = cv2.waitKey(30) & 0xff
if(key == 27):
      break
print(result['error_msg'])
camera.stop_preview()
cv2.destroyAllWindows()
[/mw_shl_code]
【树莓派】人脸追踪（1）树莓派+百度人脸识别图3