in_out.py

import cv2
import numpy as np
import winsound

def in_out():
    cap = cv2.VideoCapture(0)

    _, frame1 = cap.read()

    left, center, right = False, False, False
    x=300

    mask = np.zeros((200, 400))
    while True:

        _, frame2 = cap.read()

        g1 = cv2.cvtColor(frame1, cv2.COLOR_BGR2GRAY)
        g2 = cv2.cvtColor(frame2, cv2.COLOR_BGR2GRAY)

        diff = cv2.absdiff(g1, g2)

        _, thresh = cv2.threshold(diff, 50, 255, cv2.THRESH_BINARY)

        contr, _ = cv2.findContours(thresh, cv2.RETR_TREE, cv2.CHAIN_APPROX_SIMPLE)

        if len(contr) > 0:
            contr = max(contr, key=cv2.contourArea)
            x,y,w,h = cv2.boundingRect(contr)
            cv2.rectangle(frame2, (x,y), (x+w, y+h), (0,255,0), 2)

        if not(left) and not(right):
            if x < 100:
                left = True

            elif x > 500:
                right = True

        elif left : 
            if x < 450 and x > 200 and not(center):
                print(x," x has been set to it")
                center = True
                winsound.Beep(500, 200)

            elif x > 500:
                if center:
                    print("motion to left taken place")
                    mask = np.zeros((200,450))
                    cv2.putText(mask, "Exit-Left", (50, 50), cv2.FONT_HERSHEY_SIMPLEX, 2, (255), 3)
                    left = False
                    center = False
                else:
                    right = True

        elif right : 
            if x < 450 and x > 200 and not(center):
                print(x," x has been set to it")
                center = True
            if x < 100:
                if center:
                    print("motion done to the right side")
                    mask = np.zeros((200, 450))
                    cv2.putText(mask, "Enter-Right", (50, 50), cv2.FONT_HERSHEY_SIMPLEX, 2, (255), 3)
                    right = False
                    center = False

                else:
                    left = True

        cv2.imshow("window", thresh)
        cv2.imshow("window2", frame2)
        cv2.imshow("mask", mask)

        _, frame1 = cap.read()

        if cv2.waitKey(1) == 27:
            cv2.destroyAllWindow
            cap.release()
            break