10--untitled.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 = cap.read()   #for image frame = cap.imread(image name)


	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')
	

	lowerblue = np.array([l_h,l_s,l_v])
	upperblue = np.array([u_h,u_s,u_v])

	mask = cv2.inRange(hsv,lowerblue,upperblue)
	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()