RassberyPi Code.py

import cv2
import imutils
import numpy as np
import pytesseract
from PIL import Image
from picamera.array import PiRGBArray
from picamera import PiCamera
import smtplib
import RPi.GPIO as GPIO
import time
from time import sleep

server=smtplib.SMTP('smtp.gmail.com',587)
server.ehlo()
server.starttls()
server.ehlo()
server.login("Put email here", "Put password here")


servoPIN = 21
GPIO.setwarnings(False)

GPIO.setmode(GPIO.BCM)
GPIO.setup(servoPIN, GPIO.OUT)
GPIO.setup(14,GPIO.IN)

p = GPIO.PWM(servoPIN, 50) # GPIO 17 for PWM with 50Hz
p.start(2.0)
time.sleep(0.5)
p.ChangeDutyCycle(0)
             
def servo11():
    
    
    p.ChangeDutyCycle(6.0)
    time.sleep(0.5)
    p.ChangeDutyCycle(0)
    time.sleep(9.5)
    p.ChangeDutyCycle(2.0)
    time.sleep(0.5)
    p.stop()

camera = PiCamera()
camera.resolution = (640, 480)
camera.framerate = 30
rawCapture = PiRGBArray(camera, size=(640, 480))
for frame in camera.capture_continuous(rawCapture, format="bgr", use_video_port=True):
        image = frame.array
        cv2.imshow("Frame", image)
        key = cv2.waitKey(1) & 0xFF
        rawCapture.truncate(0)
        if(GPIO.input(14)==False):
             gray = cv2.cvtColor(image, cv2.COLOR_BGR2GRAY) #convert to grey scale
             gray = cv2.bilateralFilter(gray, 11, 17, 17) #Blur to reduce noise
             edged = cv2.Canny(gray, 30, 200) #Perform Edge detection
             cnts = cv2.findContours(edged.copy(), cv2.RETR_TREE,              cv2.CHAIN_APPROX_SIMPLE)
             cnts = imutils.grab_contours(cnts)
             cnts = sorted(cnts, key = cv2.contourArea, reverse = True)[:10]
             screenCnt = None
             for c in cnts:
                peri = cv2.arcLength(c, True)
                approx = cv2.approxPolyDP(c, 0.018 * peri, True)
                if len(approx) == 4:
                  screenCnt = approx
                  break
             if screenCnt is None:
               detected = 0
               print ("No contour detected")
             else:
               detected = 1
             if detected == 1:
               cv2.drawContours(image, [screenCnt], -1, (0, 255, 0), 3)
               servo11()
               
               
             mask = np.zeros(gray.shape,np.uint8)
             new_image = cv2.drawContours(mask,[screenCnt],0,255,-1,)
             new_image = cv2.bitwise_and(image,image,mask=mask)
             (x, y) = np.where(mask == 255)
             (topx, topy) = (np.min(x), np.min(y))
             (bottomx, bottomy) = (np.max(x), np.max(y))
             Cropped = gray[topx:bottomx+1, topy:bottomy+1]
             text = pytesseract.image_to_string(Cropped, config='--psm 11')
             print("Detected Number is:",text)
             server.sendmail("Put email here","Put email here",text)
             
             

                
                             
             
             cv2.imshow("Frame", image)
             cv2.imshow('Cropped',Cropped)
             cv2.waitKey(0)


    


             
             break
            
p.stop()
GPIO.cleanup()
cv2.destroyAllWindows()