Measure Light Intensity

Omniverse Core Platform RTX Renderer
1

Hi there,

is it possible to measure the light intensity which is reflected to an object?
I want to detect how much light arrives at a given destination, after it got reflected by any given surface.
So far i couldn’t find any solution to my problem in you documentation.

Is there anything in omniverse to provide a solution, yet?

Thanks in Advance!

2

Hello @Jens_G94! I’ve reached out to the dev team for some assistance in answering your question. I will post back here when I have more information!

3

Hello @Jens_G94! From the developer:

In Iray you can use the “Irradiance” buffer instead of the Beauty output in the render settings. This will give you a readout of the Illuminance arriving at any surface.

4

Thank You so much!

I will test if that works for me.

5

Hi there,

I hadn’t gotten around to testing it until now, sorry.

Though it looks promising, is there a way to get this irradience value printed into the console or (even better) a text- or excelfile?

irradiance_view

In my use case i’d like to compare reflections of different objects, based on size and number. It would be helpful, if it’s possible to collect data and save them inside a file

Thanks for you help so far!
Jens