How to automatically recognize charts?

Question

Pattern recognition

I need to teach a script (presumably in python) to recognize pie charts on a screen.
The screen must come from a specific service. If it is visually visible that the screen is made from another service, the script must recognize this

Answer 1

Why take on tasks for which you are not able to google information, provided that this information on the network is through the roof. Well, right from today's Habr tape - not to go far:
Object detection using YOLOv3 on Tensorflow 2.0
And this information is three articles a day! And everything is much simpler for you than the recognition of arbitrary objects. Take - FROM THIS ARTICLE OR FROM HUNDREDS OF SIMILAR -, set up (or rather, simplify to your simplest object - a pie chart), train on the dataset you have collected - and get what you need.
Teaching him "from which service the screen is made" is the next task. The principle remains the same, only the setup will have to be finer, and the training dataset will be collected a little differently.
My advice is to start simple. Understand - and solve the second problem easier.