cap = cv2.VideoCapture(0)

if circles is not None:
    # convert the (x, y) coordinates and radius of the circles to integers
    circles = np.round(circles[0, :]).astype("int")

    # loop over the (x, y) coordinates and radius of the circles
    for (x, y, r) in circles:
        # draw the circle in the output image, then draw a rectangle in the image
        # corresponding to the center of the circle
        cv2.circle(output, (x, y), r, (0, 255, 0), 4)
        cv2.rectangle(output, (x - 5, y - 5), (x + 5, y + 5), (0, 128, 255), -1)
        time.sleep(1)
        print ("Radius is: ")
        print (r)


    cv2.imshow('gray',gray)
    cv2.imshow('frame',output)

    if cv2.waitKey(1) & 0xFF == ord('q'):
                    break