This python script will allow us to linear blend two images depending on given alpha - the amount of blending.
sudo apt-get install python3
sudo apt-get install python3-pip
pip3 install opencv-python
sudo apt-get install python3-tk
A dialog box appears with option to enter alpha (the degree of blending, 0 to 1), and select images 1 and 2. Then clicking proceed will display the blended image and stores it in the current folder.
Github: invigorzz313