import cv2
import numpy as np

cap = cv2.VideoCapture(0)

while(1):
    # Take each frame
    ret, frame = cap.read()

    # Convert BGR to HSV
    hsv = cv2.cvtColor(frame, cv2.COLOR_BGR2HSV)

    # define range of blue color in HSV
    lower_blue = np.array([110,50,50])
    upper_blue = np.array([130,255,255])

    # Threshold the HSV image to get only blue colors
    mask = cv2.inRange(hsv, lower_blue, upper_blue)

    blue_amnt = mask.mean()
    blue_str = ""
    if blue_amnt < 10:
        blue_str = "not very blue"
    elif blue_amnt >= 10 and blue_amnt < 30:
        blue_str = "a bit blue"
    elif blue_amnt >= 30 and blue_amnt < 100:
        blue_str = "very blue"
    elif blue_amnt >= 100:
        blue_str = "all blue"

    # Bitwise-AND mask and original image
    res = cv2.bitwise_and(frame,frame, mask= mask)

    cv2.putText(res, blue_str, (50, 50), cv2.FONT_HERSHEY_SIMPLEX, 1, (0, 0, 255), 2)

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

    k = cv2.waitKey(5) & 0xFF
    if k == 27:
        break
    
cv2.destroyAllWindows()