import cv2
import numpy as np

video = cv2.VideoCapture(0)

while (1):

    # Take each frame
    _, frame = video.read()
    # Convert BGR to HSV
    hsv = cv2.cvtColor(frame, cv2.COLOR_BGR2HSV)

    # define range of blue color in HSV
    lower_red = np.array([150, 50, 50])
    upper_red = np.array([255, 255, 150])
    # Threshold the HSV image to get only blue colors
    mask = cv2.inRange(hsv, lower_red, upper_red)  # Bitwise-AND mask and original image
    res = cv2.bitwise_and(frame, frame, mask=mask)
    cv2.imshow('frame', frame)
    cv2.imshow('mask', mask)
    cv2.imshow('res', res)
    k = cv2.waitKey(5) & 0xFF
    if k == 27:
        break
cv2.destroyAllWindows()
add Red object detection