A certain building

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Roger
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A certain building

Post by Roger » Sat Jun 23, 2007 7:40 pm

EDIT
That's odd... I edited this post some days ago, and it worked fine, but now it was changed to the origional post without the new image... Odd. Perhaps it's just me. Anyways, thanks for the critics guys, here's the render I've rendered at school using mesh-lights as sky, sun and interior-lamps. I'm gonna try to light it by a physical sky with a sun and with mesh-lights as lamps inside.
Image
EDIT
Heya guys.

This is a little project I started yesterday because I will need to do an architectural project soon and need to practice. I have some questions so please help me out :).

The building is created in Blender in about two hours and is based on a building in Purmerend, the Netherlands. I've rendered this night-version for 6,5 hours on my AMD Sempron 3000 with 1 GB of sloow memory. The scene is lit by several tiny mesh-lights. (I couldn't get a nice render out of it until I discovered the Linear/Reinhard button (now turned to Linear) and finally was able to modify the power of the mesh-lights. (Probebly not, but that was what it seemed like.)

Origional render:
Image
Over-exposed with PS for fun:
Image

I've rendered a day-light render at school, but since I wanted a sun and physical sky AND some mesh-lights, I couldn't for some reason. Therefor I chose to lit the scenes just by mesh-lights (bigger ones for sky, smaller one for sun and some tiny ones as lamps in the building). But is there a better way to render a scene quickly (as in not too much render time) looking very pretty and convincing as a daylight scene but also with some mesh-lights? Please help me out. Also, is it faster to render a scene with a sun and physical sky or with mesh-lights around it?

The daylight render (from school) will be posted on monday since it's weekend now and it is rendering during the weekend.

Ow, and is it possible to render a scene with a picture like below (but than high-res) as a correct background, perhaps even liching the scene? That'd be cool!
Image

Cheers

Sander
Last edited by Roger on Tue Jun 26, 2007 9:48 pm, edited 1 time in total.
Sander "Roger" Wit
The Netherlands

SimonLarsen
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Location: Odense, Denmark

Post by SimonLarsen » Sat Jun 23, 2007 8:41 pm

Cool render.
Ow, and is it possible to render a scene with a picture like below (but than high-res) as a correct background, perhaps even liching the scene? That'd be cool!
Yes, it is. Indigo supports something called Environment Maps.

It is an image like the one in your post, it just has to be .exr (or .float?).

There is a good tutorial here:
http://www.indigorenderer.com/joomla/fo ... php?t=1243

And there's some good exr/hdrs here:
http://gl.ict.usc.edu/Data/HighResProbes/
http://www.evermotion.org/index.php?unf ... =exclusive

kadajawi
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Joined: Wed Mar 07, 2007 7:40 am

Post by kadajawi » Sun Jun 24, 2007 9:46 am

Mh, I recall having used sun, sky and meshlights, you might have to increase the brightness of the meshlights though.

SimonLarsen
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Location: Odense, Denmark

Post by SimonLarsen » Sun Jun 24, 2007 10:46 am

kadajawi wrote:Mh, I recall having used sun, sky and meshlights, you might have to increase the brightness of the meshlights though.
Yes, and often also tweak your tonemapping settings.

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CTZn
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Location: Paris, France

Post by CTZn » Mon Jun 25, 2007 3:11 am

The two last posts are relevant, in real life you would not compare our Sun with a bulb eh ? Same in Indigo, if you want your meshlights to be somehow efficient while using sun, you need to give'em a very high gain (start with millions and decrease if necessary). Test both tonemapping methods as tonemapping is a key in final image, it's range is determined by the highest value in scene, that is, sun. You want your bulbs to stand beside the sun energy-wise, not that they remain "black bodies".

I hope that make sense !

personal request: please post full images even if hosted at imageshack, I hate connecting to their servers :x
obsolete asset

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Kram1032
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Location: Austria near Vienna

Post by Kram1032 » Mon Jun 25, 2007 9:42 am

CTZn wrote:personal request: please post full images even if hosted at imageshack, I hate connecting to their servers :x
Me too.

Why don't you simply host them on Indigo, directly?

Overexposure is much simpler, by using low burn values - save .igi files and modify the tonemapping and some more stuff, in violet ;)

Nice Lighting, btw :)

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