#Coding4Fun – How to control your #drone with 20 lines of code! (19/N)

Hi !

Today I face another challenge: I needed to overlay an image on top of another. Something like this.

Lucky for me, and as usual, OpenCV allow us to do this with a few lines of code. Let’s take a look.

• Line 8. Define a custom size for all the images: background image and camera feed frame.
• Lines 10-12. Load and resize background image.
• Line 21. Overlay the camera frame and the background image.

Sample Code

	# Bruno Capuano 2020
	# display the camera feed using OpenCV
	# add a bottom image overlay, using a background image
	import time
	import cv2
	dsize = (640, 480)
	# load bottom img
	background = cv2.imread('Bottom03.png')
	background = cv2.resize(background, dsize)
	video_capture = cv2.VideoCapture(0)
	time.sleep(2.0)
	while True:
	ret, frameOrig = video_capture.read()
	frame = cv2.resize(frameOrig, dsize)
	img = cv2.addWeighted(background, 1, frame, 1, 0)
	cv2.imshow('Video', img)
	if cv2.waitKey(1) & 0xFF == ord('q'):
	break
	video_capture.release()
	cv2.destroyAllWindows()

view raw CameraOverlayLogo.py hosted with ❤ by GitHub

And from here, I’ll update some posts with the drone camera.

References

• OpenCV, Adding (blending) two images using OpenCV