I thought I would try this radiosity thingamajiggy. (WIP)

[Incarnadine]

This looks pretty clean to me, I get more of a random light (or lighter) spot type. I suspect it may have to do with objects that have some physical overlap as opposed to being booleaned.

The only thing I can see is a trace of facetting on the bed. is this what you are referring to?

[vesalus]

hi, i think the major update you can try is to had a softlight beneath your window to get the impression of a diffuse light entering your room, that's the major difference with most vray render, the light seems to diffuse into the room
:) http://www.evermotion.org/forum/viewtopic.php?t=3582

[flingster]

having looked at that scene i'm amazed at just how few artifacts you've got..ya certainly like a challenge bud.
what settings are you using currently? (max/min) etc

[Tugmaster]

Thanks guy's. What I'm trying to work on is a way to get a clean render with min. artifacts using different types of lights and shadows or adding additional lights in the scene as apposed to cranking up the radiosity settings. This radiosity is all new to me as I usually fake it. I'm still trying to figure out exactly what is the biggest contributer to artifacts. Flingster, my settings were-

Strength 100%
Accuracy 40%
Diffuse 1
Stochastic 600
Min. 15
Max 90


Thanks!

[Incarnadine]

I'm going to try a similar type of settings tonight on some that i have artifacts in (after work).

[flingster]

so how long does that take to render? i see where you're going and its a good idea really.
have you tried incrementing it slightly to say accuracy to say 50-60% and say diffuse to 4 maybe... the problem is really you don't want to change the appearance to much but get the artifacts out, very tricky..i'm definitely floundering on the advice i'm afraid but certainly gonna keep attached to thread. with this scenes settings i'm even more surprised at the lack of artifacts..:thumbsup:

[Tugmaster]

Not having any experiance using radiosity I just assumed that all I had to do was throw in a skydome a sun and additional lights for shadows and whaaa-la but I'm finding that the skydome is the biggest offender in creating artifacts. I'm sure this is already old news to most of you guys but this is all new to me. I've rethunk my ways and have gotten rid of the sky dome and just added two additional area lights just outside the windows to replace the skydome simulation. I have much more control over the lighting and shadows and the artifacts now. I'm still experimenting with with the light falloff and shadows but I think the results will turn out pretty good. I'm not trying to duplicate the Vray look but to get a nice clean look with the least amount of render time which is what has kept me from using radiosity in the past. Flingster my friend, I'm not going to boost the radiosity settings untill I've gone as far as I can go trying to use lighting to get rid of the artifacts. Render times without finishing the texturing so far has been around 15 minutes. Thanks for the feedback guy's!

[Tugmaster]

I hope this might be helpful as it's almost noon and I'm still in my bathrobe which is not a pretty site not to mention if my wife were to come home and the housework wasn't done.....I shudder at the thought. Anyway as I was sitting at the puter experimenting with radiosity and looking at the lighting in the house I noticed two distinct lighting situations. One is the ambient light which I guess would be the GI and the other being direct sunlight each with there own strength and seperate shadows. To get this look using a dome you would have to jack up the luminance on the dome to a point of getting blown lighting highlights plus the more you jack up the luminance the more artifacts you get it seems. By getting rid of the dome and using substitute lighting I'm getting really clean renders without upping the radiosity settings and with much more realistic lighting because of the better control of not using the dome. I'm sorry if this is old news to you guys once again but I'm tickling my self pink with all this new knowledge. I'm starting to like radiosity. Thanks for listening to me rant!

[Continuumx]

I am running an experiment now, where I have switched to stochastic for the method of radiosity calculation for my render. I am finding that I can use this method with fine tuning speed vs. graininess to achieve pretty much artifact free renders for my own test.

Then I take this information and reverse engineer the standard method of radiosity calculation to achieve an similar render then cut back on the settings to tailor it to preference of speed.

I am still testing this technique to see if it can work.

The fact remains, a good 'lighting rig' is a must.

[Clipi2000]

I look forward to hear about you method for optimizing rendering.

Thanks

[holle]

Hi,
I also still testing the abilitys of the ar for interiorlightning.
After some good results, I try to use the learned on the tutorial from
evermotion.org . But when I use areashadows with a higher sample rate
to get not so much grain, the rendertime goes extremly up.
I stoped rendering the last scene after 19 hours at a resulution of 800x600 pixel,
the ar has rendered only 2/3 of the scene :-(
So I go back to soft shadows, with better rendertimes, but not so good look.
Here an actual image:
http://www.schoemann-unna.de/preview/evermotionc4d12_02.jpg

[AdamT]

Try rendering a shadow pass with the lower samples and run a little smart blur on it in PS.

[kuui]

Thanks guy's. What I'm trying to work on is a way to get a clean render with min. artifacts using different types of lights and shadows or adding additional lights in the scene as apposed to cranking up the radiosity settings. This radiosity is all new to me as I usually fake it. I'm still trying to figure out exactly what is the biggest contributer to artifacts. Flingster, my settings were-

Strength 100%
Accuracy 40%
Diffuse 1
Stochastic 600
Min. 15
Max 90


Thanks!
raise the min setting higher than 20-25, i hear people talking a lot about it speeding up rendering times because the renderer uses a different type of selecting samples under a certain setting.

try it out

[Tugmaster]

Kuui, I kinda got sidetracked doing a little project for my son so I haven't been playing much with my scene. I'll work on your suggestion thanks! Hollie, nice render I think your on the right track but those render times Ouchie! Anything over a couple of hours I get cranky and I need to take one of my wifes Midols!

[holle]

Hi,

I try out a new version with planes that use the luminace-chanel of the
material, here a image. Rendertime on a P4, 2.5 ghz 2:18 hours.
http://www.schoemann-unna.de/preview/evermotionc4d16_02.jpg

[CGTalk Moderation]

This thread has been automatically closed as it remained inactive for 12 months. If you wish to continue the discussion, please create a new thread in the appropriate forum.