Opencv Image Blending: How to blend two images?

Opencv Image Blending

This process is very similar to image addition, but in this process images are given different weights. Thus, a transparent mixture is obtained. Images are added according to the following equation:

𝑔(𝑥) = (1 − 𝛼)𝑓0(𝑥) + 𝛼𝑓1(𝑥)

By changing the value of a between 0 and 1, transparency can be adjusted. In this study, 2 images were used to put them together. The weight was given 0.3 to the first picture and 0.7 to the second picture. cv2.addWeighted () applies the following equation to the image.

𝑑𝑠𝑡 = 𝛼 · 𝑖𝑚𝑔1 + 𝛽 · 𝑖𝑚𝑔2 + y

Open images:

image1 = cv2.imread('flower.jpg')
image2 = cv2.imread('bird.jpg')

Blending:

rs = cv2.addWeighted(image1, 0.3, image2, 0.7, 0.0);

Result:

All Code:

import cv2

image1 = cv2.imread('flower.jpg')
image2 = cv2.imread('bird.jpg')

image1 = cv2.resize(image1, (300, 300))
image2 = cv2.resize(image2, (300, 300))

rs = cv2.addWeighted(image1, 0.3, image2, 0.7, 0.0);

cv2.imshow('blend', rs)
cv2.imshow('img1', image1)
cv2.imshow('img2', image2)

cv2.waitKey(0)
cv2.destroyAllWindows()