Author Topic: Fake Radiosity  (Read 7242 times)

byzantium1200

    Reputation: 42
Fake Radiosity
« on: February 03, 2012, 11:41:21 am »
February 03, 2012, 11:41:21 am
Strategically placed color lights can change a scene dramatically by faking radiosity. (I made the model looking at LumenRT's modified Cornell Box).

Re: Fake Radiosity
« Reply #1 on: February 03, 2012, 05:34:20 pm »
February 03, 2012, 05:34:20 pm
Looks like radiosity indeed.

Architectural Innovation

    Reputation: 13
Re: Fake Radiosity
« Reply #2 on: February 03, 2012, 09:35:58 pm »
February 03, 2012, 09:35:58 pm
really cool. will keep in mind for future.

thanks,

bob

Ming Architect

    Reputation: 3
Re: Fake Radiosity
« Reply #3 on: February 05, 2012, 04:14:38 am »
February 05, 2012, 04:14:38 am
Do you know many arch-viz people use this kind of technique for 3DS Max scanline renderings ?












With this simulated light and catmull-rom sharpening, the result is very good.
Many people use it for animation because of rendering speed issue of V-Ray.
These are not my works, but years ago many artists use this not so widely-known techniques nowaday.

Do you think it's good if this can be done without messing with complicated set up or much artistic skills? Most architects would say this is good enough, expecially they can do it parallelly while designing! It more natural when you can visualize while designing, not just when the design is done. This will empowered most architects and improved their design process drastically. It's like the day SketchUp come, before it most architect don't have easy tools to design in 3D. Now Lumion come to visualization side.

Of course, they may not be on par for V-Ray standard rendering nowaday, but V-Ray animation is almost impossible for studios too. So it's time to realize them in Lumion, hire some arch-viz expert to play with Lumion and systemetic their hard and tedious steps  :-D
The examples shown artistic aspects oriented, but of course some kind of 'dome light/ring light' to fake GI is worth playing for sure. All the basics come from photography lighting.
<a href="http://youtu.be/5fPoPbPmumQ" target="_blank" class="aeva_link bbc_link new_win">http://youtu.be/5fPoPbPmumQ</a>




Before Lumion, resort projects needed a lot photoshop and animations is so time consuming, especially from bird eye view. Of course, photoshop is essence for most renderings for artist, but that's not true for animations. IMO If Lumion got adjustable filters, it's also a nice alternative to After Effect because 80% of architectural animations don't need a lot of those movie effects much.

I imagine this can be done, semi-automated, in Real-time Lumion soon  :-D

Thanks,
Ming

blendman

    Reputation: 26
Re: Fake Radiosity
« Reply #4 on: February 05, 2012, 09:44:03 am »
February 05, 2012, 09:44:03 am
Strategically placed color lights can change a scene dramatically by faking radiosity. (I made the model looking at LumenRT's modified Cornell Box).

I assume you uped the Emission of the faces slightly, and added coloured lamps???

regards,

blendman

byzantium1200

    Reputation: 42
Re: Fake Radiosity
« Reply #5 on: February 05, 2012, 09:56:46 am »
February 05, 2012, 09:56:46 am
I assume you uped the Emission of the faces slightly, and added coloured lamps???

regards,

blendman
Hi blendman, only colored lights. Unfortunately they also illuminate the faces. Otherwise that would be more realistic.

blendman

    Reputation: 26
Re: Fake Radiosity
« Reply #6 on: February 05, 2012, 10:03:18 am »
February 05, 2012, 10:03:18 am
Thanks for the feedback Byzantinium.

regards,

blendman

Ming Architect

    Reputation: 3
Re: Fake Radiosity
« Reply #7 on: February 05, 2012, 10:31:09 am »
February 05, 2012, 10:31:09 am

with reflections coming soon , all this could be done by lumion , im sure.

but what is catmull-rom sharpening


http://www.game-artist.net/forums/support-tech-discussion/3841-3d-max-improve-your-renders-catmull-rom.html

It's the sharpening filter that make the image pop when compared with other methods. Not needed but it make you wonder why your image is not as clear and crisp as some, when comparing side by side, if you never stumbled upon it before  ;)

Sharpening is very important to make renderings stand out for artists. This also true for photography.

Thanks,
Ming

Ming Architect

    Reputation: 3
Re: Fake Radiosity
« Reply #8 on: February 05, 2012, 05:05:18 pm »
February 05, 2012, 05:05:18 pm

thanks ming, but i cant see the difference
i thought it was a way of only sharpening the FOREGROUND , and not the background


Sorry I can't provided the high res. images and of course DOF is very important and need to be sharpening correctly. Just want to informed that Anti-aliasing and sharpening is so important for Real-time renderings.

Check out this site for more infos and what we can hope for real-time rendering techs:
http://deadendthrills.com/faq/

Thanks,
Ming