Rendering Ambient Occlusion?

Ken N

Member
Feb 21, 2020
160
149
Los Angeles, California, USA
Enter your latest Lumion version
10.3 Pro
Hello there,
I hope you are well and staying safe.
I was watching an excellent video by Nuno Silva ( How To Make Realistic Landscape Terrain in Lumion).



At 5:38, he shows an ambient occlusion render. The only options I see are D (depth map), N (normal map), S (specular reflection map), L (lighting map), A (Alpha sky), and M (Material ID map).
How can you create an Ambient Occlusion pass?

Thank you,
_Ken
 

Aris

New member
Jun 28, 2020
50
8
To speak from a user's point of view:
from my understanding, Lumion is not a physically based engine (to put it simply, it just tries to simulate the result of how light behaves instead of the entire process) That is what makes it so fast.
So, I would say it is the equivalent of ambient occlusion, it just uses much more simplified algorithms, to achieve the result in seconds instead of hours.
 
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Morten

Administrator
Staff member
Mar 8, 2019
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Lumion 10.5 Pro
The closest you get to conventional ambient occlusion in Lumion is what's called OmniShadow.

OmniShadow
is a slider in the Shadow Effect.

1595847388838.png


It's not possible to export OmniShadow as a separate mask.

Note that it's not physically accurate; it simply adds subtle shading to surfaces that are assumed to receive less lighting, for example, small cracks, crevasses, corners etc. The amount is based on the distance from other surfaces.

If the surfaces of your model face the sky, the Sky Light Effect will generally result in more convincing soft, ambient shadows whereas the less accurate OmniShadow feature is more important for interiors that do not get any light from the sky.
 
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Peter

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Mar 2, 2020
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Hi Ken

The developers clarified the differences. What Nuno mentions as an Ambient Occlusion Map (we don't render such a map) is in fact our Lighting Map. Unless he somehow rendered it in some other software.

Our Lighting Map provides the full lighting component for post-production. Whereas an Ambient Occlusion Map only includes diffuse lighting.
 
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Ken N

Member
Feb 21, 2020
160
149
Los Angeles, California, USA
Enter your latest Lumion version
10.3 Pro
Hi Ken

The developers clarified the differences. What Nuno mentions as an Ambient Occlusion Map (we don't render such a map) is in fact our Lighting Map. Unless he somehow rendered it in some other software.

Our Lighting Map provides the full lighting component for post-production. Whereas an Ambient Occlusion Map only includes diffuse lighting.
Thanks for confirming, Peter. Cheers!
 
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