So, where did you end up?
How to use?
Stand in front of the green wall, and watch what happens on the canvas facing you.
Try different backgrounds.
The numbers of the keyboard reveal various images from 0 to 9.
The software places the “photo subject” standing in front of the neutral green background in an environment created before. The uniform colour of the background is essential for the implementation, as the software uses it for the distinction of the subject and cropping it from the background.