Getting Start:

You have to know how to set up a evironment for python in minecraft first. it is recommented to follow the tutorial(URL is list bellow) to complete evironment settings.

Python Coding for Minecraft

Python prerequisites dependencies.

sklearn.

for kd_tree algorithm.

Pillow

for image procceing.

Windows user:

You can download whl file from following link to install pillow. Unofficial Windows Binaries

Linux & Mac user:

pip3 install pillow

Running test:

Once you finsh the above step, move the file main.py to %appdata%/.minecraft/mcpicy and modify the code in line number 126th, change the line to the path of your image file. im = Image.open(r"your/picture/path)")
I know this approach like change the the path maually is terrible but I will amend this function one day when I have somehow more free time, or you can change the image dynamiclly by adding a feature by yourself. If every thing above is setted up correctlly, start minecraft and run the source code, the building should show up in your world.