Detect By Color
Each color have some color code, so here we will be targeting only. We will be considering for yellow color.
Let’s look at an code :
# Import neccessary libraries
import cv2
import numpy as np
# Initialize
cap = cv2.VideoCapture(0)
# define range of Yellow color in HSV
lower_yellow = np.array([51,51,0])
upper_yellow = np.array([255,255,224])
# loop until break statement is exectured
while True:
# Read webcam image
ret, frame = cap.read()
# Convert image from RBG/BGR to HSV so we easily filter
hsv_img = cv2.cvtColor(frame, cv2.COLOR_BGR2HSV)
# Use inRange to capture only the values between lower & upper_yellow
mask = cv2.inRange(hsv_img, lower_yellow, upper_yellow)
# Perform Bitwise AND on mask and our original frame
res = cv2.bitwise_and(frame, frame, mask=mask)
# Show mask and frame
cv2.imshow('Original', frame)
cv2.imshow('mask', mask)
cv2.imshow('Filtered Color Only', res)
# Exit when the Enter Key is pressed
if cv2.waitKey(1) == 13:
break
# destroy windows and release camera
cap.release()
cv2.destroyAllWindows()
Our Output frame will look like this:
