REPLACE GREEN SCREEN USING OPENCV AND PYTHON 🤓

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  • In this post, we are going to discuss how to replace a video which is having green screen background with a background image using OpenCV and Python🐍.
  • To understand this, you have to know how to detect colors using OpenCV and Python and you can check out by clicking here🐱‍🏍.

Input video and background image😄:



Code😄:

# Python program to replace the green screen in the video
# with the background image
import cv2
import numpy
# reading the background image
bg_img = cv2.imread('Background image location')
# getting the height and width of the background image
height, width = bg_img.shape[0:2]
# reading the video which is having green screen background
video = cv2.VideoCapture('Green screen video location')
while True:
# reading the input video frame by frame
_, green_img = video.read()
# resizing the image in the video with the background image
green_img = cv2.resize(green_img, (width, height))
# converting the BGR image to HSV image
green_img_hsv = cv2.cvtColor(green_img, cv2.COLOR_BGR2HSV)
# getting the mask image with lower and higher HSV of green color
lower_hsv = numpy.array([40, 150, 20])
higher_hsv = numpy.array([150, 250, 255])
mask = cv2.inRange(green_img_hsv, lower_hsv, higher_hsv)
# getting the masked image
bitwise = cv2.bitwise_and(green_img, green_img, mask=mask)
# getting the final output (replacing the green screen with the background)
diff = green_img - bitwise
result = numpy.where(diff == 0, bg_img, diff)
# showing the result
cv2.imshow('Result', result)
# press enter to end the loop
if cv2.waitKey(1) == 13:
break
view raw replace_green_screen.py hosted with ❤ by GitHub

Output😄: 


I hope it will help you😊.

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