Take the pictures below as an example, I want to calculate how much of the jersey number on the tshirt of the human model is visible on the render view. In the first case the jersey number is totally visible, but in the second just about 50% is visible. How to calculate it with python?

CONTEXT: I am working in a jersey number recognition. My project is to generate artificial data with blender to train the network. So I will take a human model as below and generate thousands of randomized screenshots with different tshirts, different poses, different camera angles, etc. Since I will generate new poses randomly it could be that in some of them the arm is blocking part of the jersey number. I want to somehow be able to detect it in order to discard these screenshots.

Take the pictures below as an example, I want to calculate how much of the jersey number on the tshirt of the human model is visible on the render view. In the first case the jersey number is totally visible, but in the second just about 50% is visible. How to calculate it with python?

CONTEXT: I am working in a jersey number recognition task. My project is to generate artificial data with blender to train the network. So I will take a human model as below and generate thousands of randomized screenshots with different tshirts, different poses, different camera angles, etc. Since I will generate new poses randomly it could be that in some of them the arm is blocking part of the jersey number. I want to somehow be able to detect it in order to discard these screenshots.