Glowing Bicycle - Problem with rendering in Art*Lantis

[Anonymous]

Hi everyone

Please take a look at image attached. There is a bicycle leaning on the wall of the middle house.

I'm having some problem with toning down the "glowing" effect that it seems to be having. The object was added in Art*lantis, and it had its own materials attached to it.

I've checked all the parameters of every single material for the bike, and none of them seem to be glowing. All I can think of to solve this is to replace the materials with something dark and none-reflective, but it has made the bike look like it was being burned and charred, and left at that corner to decay.

Could this be a problem with the radiosity control of the scene?

Thanks!
Shawn

[Thomas Holm]

Try turning down radiosity a bit, and set all other settings (anti-aliasing etc) to best.

But it might be something else. It looks like there is something weird with the roof/ridges above the bike. Perhaps there is something wrong in the model that makes Artlantis think the bike is sun-lit. That would explain it. Also, it looks like it stands on top of the hedge!
Otherwise, a burnt bike seems to me to be add the ultimate realism to a scene that's already very realistic! Nice work!

Edited:

I forgot - what kind of object is the bike? If it's a 3D object, the above might apply. But if it's a "billboard" (a 2D image inserted) that might explain why it doesn't respond to light correctly Those don't render right with the rest of the image. You'll have to change the object itself (color/darken it) or simply exchange it.

[Anonymous]

Hey Thomas

Thanks for the tips and suggestions. The bike is actually a 3D object, not a 2D billboard. Anyway, I have "burnt" the bike to make it less-shiny. Take a look.

My client also did not like the car/road thing, so I had to get rid of it.

Tried to tone down the radiosity, but it also affected the other areas, where I thought the radiosity was nicely applied. Guess I have to find something else to park next to a wall next time.

[Thomas Holm]

Shingo wrote:
Anyway, I have "burnt" the bike to make it less-shiny. Take a look.

The bike is perfect now to my eyes. And the turned down radiosity has made the shadowed wall behind it more realistic, too. Previously it looked like you had a hidden reflective white-screen (like in movie production) that lighted the wall too much.

Now the only thing I don't care for is the color of the bush to the right of the bike. I've never seen one that would look like that with this lighting.

Shingo wrote:
My client also did not like the car/road thing, so I had to get rid of it.

Well, he is wrong (but the client is always right, etc. 😉 The scene is less lively now. Maybe you can fix that with some children playing, or something.

What grass are you using? My grass often catches too much light, this one seems fine.

[Anonymous]

I was quite upset when the client decided not to have the cars and the people (they can really help make a the scene more lively).
Unfortunately the client has also asked to have the people removed, so the idea of putting some childen around would be deemed unacceptable.

About the grass, if u compare the 1st to the 2nd image, the grass types are different. In the earlier one, I used a grass mapping that was applied in ArtLantis. In the second, the grass mapping is from the standard one in ArchiCAD itself. I forgot to replace the material with the one I initially chose in the 1st instance.

Perhaps the thing I did to the grass in ArtLantis was to uncheck the box that made the material cast shadows. I find that it helps to eliminate the green glow it gives to light-colored surfaces near the grass area.

PS: I really liked the car.

[Thomas Holm]

Shingo wrote:
Perhaps the thing I did to the grass in ArtLantis was to uncheck the box that made the material cast shadows. I find that it helps to eliminate the green glow it gives to light-colored surfaces near the grass area.

Good tip! I'll test that! Thanks!

PS: I really liked the car.

Me too. But the scene is still very realistic now. Only the bush at right tells me that it's a computer fake. Depending on the purpose, if it were my presentation, I'd consider some of Dwight's Photoshop tricks to un-realize it a little:
http://archicad-talk.graphisoft.com/viewtopic.php?p=69307&highlight=photoshop+tricks#69307