Thermal outputs with only RGB imaging

Good day,

Just a question of curiosity, how are the thermal point clouds generated when only using RGB imaging?

Which parameters constitute the classification and what are the point values units?

Thanks

Per example this image of one of my recent sites?

Hello,

If the dataset is not thermal, the image does not represent thermal data. The shader you used is" Screen aligned quads, Thermal" which looks like thermal data but it is just one way to present the data that is often used for thermal projects.

Kind regards,