Here is a project for facial recognition + tracking for arduino

This will locate and track your face

Windows only

(located and track your face on the program silly. a.k.a A rectagle is put around your face in program and servo will move camera in the direction of your face.

You Need..

Software:

- Python (version 2.7 or younger)

- Haarscade click for install (This is a pre trained file for detecting human faces)

- OpenCV click and scroll for download (Real time computer vision detection and other)

Type the following in cmd  (type cmd in windows searchbar)

pip install pyserial
pip install numpy

Hardware:

- Bread Board

- Arduino

- Jumper wires

- Pan/tilt Mechanism (two servos somehow connected)

- Web cam

Coding 

To start we are going to make a new python file

Python code

Type "Idle" in windows searchbar and press run. this should bring up Python and then past the following code:

import cv2
import time
import serial
from serial import Serial
face_cascade= cv2.CascadeClassifier('haarcascade_frontalface_default.xml')
cap=cv2.VideoCapture(1)

ArduinoSerial=Serial('com3',9600,timeout=0.1)

time.sleep(1)

while cap.isOpened():
    ret, frame= cap.read()
    frame=cv2.flip(frame,1)  
 
    gray = cv2.cvtColor(frame,cv2.COLOR_BGR2GRAY)
    faces= face_cascade.detectMultiScale(gray,1.1,6)  
    for x,y,w,h in faces:
      
        string='X{0:d}Y{1:d}'.format((x+w//2),(y+h//2))
        print(string)
        ArduinoSerial.write(string.encode('utf-8'))
      
        cv2.circle(frame,(x+w//2,y+h//2),2,(0,255,0),2)
       
        cv2.rectangle(frame,(x,y),(x+w,y+h),(0,0,255),3)
   
    cv2.rectangle(frame,(640//2-30,480//2-30),
                 (640//2+30,480//2+30),
                  (255,255,255),3)
   
    cv2.imshow('img',frame)
  
    '''for testing purpose
    read= str(ArduinoSerial.readline(ArduinoSerial.inWaiting()))
    time.sleep(0.05)
    print('data from arduino:'+read)
    '''
   
    if cv2.waitKey(10)&0xFF== ord('q'):
        break
cap.release()
cv2.destroyAllWindows()

After all this is pasted and put it in the folder that you created

Arduino Code

This code with control the servos 

//code created by Luis Mat
#include<Servo.h>

Servo x, y;
int width = 640, height = 480;  
int xpos = 90, ypos = 90;  
void setup() {

  Serial.begin(9600);
  x.attach(9);
  y.attach(10);
 
  x.write(xpos);
  y.write(ypos);
}
const int angle = 2;  

void loop() {
  if (Serial.available() > 0)
  {
    int x_mid, y_mid;
    if (Serial.read() == 'X')
    {
      x_mid = Serial.parseInt();  
      if (Serial.read() == 'Y')
        y_mid = Serial.parseInt();
    }
   
    if (x_mid > width / 2 + 30)
      xpos += angle;
    if (x_mid < width / 2 - 30)
      xpos -= angle;
    if (y_mid < height / 2 + 30)
      ypos -= angle;
    if (y_mid > height / 2 - 30)
      ypos += angle;


    
    if (xpos >= 180)
      xpos = 180;
    else if (xpos <= 0)
      xpos = 0;
    if (ypos >= 180)
      ypos = 180;
    else if (ypos <= 0)
      ypos = 0;

    x.write(xpos);
    y.write(ypos);

   
  }
}

*I apologize as I couldnt find any software to create a schematic for servos and my orginization is sub-par; I must write them. This may be hard to understand so ask questions down below😞

SIGNAL PINS

Horizontal - pin 9

Verticle - pin 10

Signal wires from servo can be, white, orange, yellow, or blue

GND/NEGATIVE

Connect what is labeled GND on the arduino to the negative column on the bread board

Connect the black or brown servo pin to the negative column

5v/POSITIVE 

Connect what is labeled 5v on arduino to the positive column on the bread board

Connect Red servo pin to positive column

UPLOAD and have fun :)

I will try to answer questions