Objectdetection.py

import cv2
import numpy as np
def nothing(x):
    pass
cap=cv2.VideoCapture(0)
cv2.namedWindow("Tracking")
cv2.createTrackbar("LH","Tracking",0,255,nothing)
cv2.createTrackbar("LS","Tracking",0,255,nothing)
cv2.createTrackbar("LV","Tracking",0,255,nothing)
cv2.createTrackbar("UH","Tracking",255,255,nothing)
cv2.createTrackbar("US","Tracking",255,255,nothing)
cv2.createTrackbar("UV","Tracking",255,255,nothing)

while True:
    #frame=cv2.imread('balls.jpeg')
    _,frame=cap.read()
    hsv=cv2.cvtColor(frame,cv2.COLOR_BGR2HSV)
    l_h = cv2.getTrackbarPos("LH","Tracking")
    l_s = cv2.getTrackbarPos("LS", "Tracking")
    l_v = cv2.getTrackbarPos("LV", "Tracking")
    u_h = cv2.getTrackbarPos("UH", "Tracking")
    u_s = cv2.getTrackbarPos("US", "Tracking")
    u_v = cv2.getTrackbarPos("UV", "Tracking")
    lb=np.array([l_h,l_s,l_v])
    ub=np.array([u_h,u_s,u_v])
    mask=cv2.inRange(hsv,lb,ub)
    res=cv2.bitwise_and(frame,frame,mask=mask)

    cv2.imshow("frame",frame)
    cv2.imshow("mask", mask)
    cv2.imshow("res", res)

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