what is the world coordinate system?

[cseconds]

hi, thank you for your great work.
I encountered a problem when using your data. What are the world coordinate system and camera coordinate system?

[cseconds]

I checked a lot of Gbuffer data, and I found that the normal map coordinate system is different from what the author drew in the picture. In fact, x(+) is to the left, y(+) is up, and z(+) is inside the screen.