fall_detection.py

import cv2
import time

cap = cv2.VideoCapture('fall.mp4') 
time.sleep(2)  

fgbg = cv2.createBackgroundSubtractorMOG2() 
j = 0 
fall_flag=0 
while(1): 
    ret, frame = cap.read()
    try:
        gray = cv2.cvtColor(frame, cv2.COLOR_BGR2GRAY)
        fgmask = fgbg.apply(gray)
        contours, _ = cv2.findContours(fgmask, cv2.RETR_TREE, cv2.CHAIN_APPROX_SIMPLE)
        if contours:
            areas = []
            for contour in contours:
                ar = cv2.contourArea(contour)
                areas.append(ar)
            max_area = max(areas, default = 0)
            max_area_index = areas.index(max_area)
            cnt = contours[max_area_index]
            M = cv2.moments(cnt)
            x, y, w, h = cv2.boundingRect(cnt)
            cv2.drawContours(fgmask, [cnt], 0, (255,255,255), 3, maxLevel = 0) 
            if h < w:
                j += 1
            if j > 10:
                print("FALL")
                fall_flag=1
                cv2.putText(fgmask, 'FALL', (x, y), cv2.FONT_HERSHEY_TRIPLEX, 0.5, (255,255,255), 2) 
                cv2.rectangle(frame,(x,y),(x+w,y+h),(0,0,255),2) 
            if h > w:
                j = 0
                cv2.rectangle(frame,(x,y),(x+w,y+h),(0,255,0),2) 
            cv2.imshow('video', frame)
            if cv2.waitKey(33) == 27:
                break
    
    except Exception as e:
        break

cv2.destroyAllWindows()