View Full Version : HDRI Question

Facial Deluxe
11 November 2002, 08:57 AM
Hi all,
I'm having fun experimenting HDR rendering at the moment.
The thing is it's time consuming because it involves radiosity.
In the Adidas article
The guy mention an alternative technique using HDR without Radiosity but with similar results.
Lux: Were there LightWave plug-ins that worked especially well during this project?

RM: Yes, LightWave's plug-in architecture was very important in this project. in fact for all projects we do at DD. We have lots of custom plug-ins, one in particular, "Light Wench" (by Richard Wardlow), allows the artists to create custom lighting rigs based on HDR spherical images taken on set. The cool thing is that it gives us radiosity type shading without the render hit. Lighting has never been made simpler. You can move a light around and see the color changing in the graph editor all based on the HDR. The results are quite impressive, but if I say anymore, they'll shoot me.

So any idea ?

I was thinking at some "Color Luxigon" that would take the "per polygon color-according to the applied maping" .
ex: semi dome with color mapping on it
apply luxigon
Luxigons has the color of the mapping of the dome

Again Idea ??

11 November 2002, 09:52 AM

I think Eki's PluginPack has something similar aswel

11 November 2002, 10:06 AM
I agree with Mattoo. Lightgen will do the trick. Just take your HDRI into HDRIshop, create a lightgen file, and voila, you'vegot a lightrig based upon the HDRI image. Fast rendering, great results!


Facial Deluxe
11 November 2002, 10:32 AM
Thank you guys, the results are awesome !
I invite anyone to test it !

11 November 2002, 10:44 AM
There is a component of Eki's Plugpak named Overcaster Ambimage which simulates radiosity by creating a sphere or dome of lights. one option allows you to specify an image to be mapped into a 24-light rig. i don't know if it respects HDR data, but the mapping idea seems to be similar.

Here is the link.

Facial Deluxe
11 November 2002, 10:59 AM
Quick test baddly tweaked.
1 is 1mn30s
2 is 20s

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