Need Help with Background Image in Interior Rendering

[Jet]

Ok,
Im bout at my wits end on this thing. After trying and giving in to the big white light in the window, here is my question. When you want your background to come thru, and not be illuminated with vray gi, what is the best approach, In radiosity i used to use a dome with background mapped to it. Now i never use them period. I think that the addition of nice backgrounds through windows or doors being visable would definately help my scenes. Can anybody shed some light on this issue. i have been searching for a few topics, but cant find any relative to my question.
probably simple nonetheless
but i need help

thanks in advance,

jt

[percydaman]

The best way to do backgrounds is to comp them in using photoshop. The level of control you get is unbeatable.

[Jet]

In photoshop how do you get that not so like a poster on the window look though?

Jet

[Jet]

For example


i just deleted the glass in photoshop and then put that background back there, but they look more like posters back there than background, and you cant see glass for the windows

thanks


jet

[ShaunDon]

You might pick the dark values in the background up a little bit, you'd rarely see black blacks in a photo taken of an interior space where you see out windows.

Search for some reference photos. The inside of your frames need to be much whiter where the light hits them, especially if the material would be reflective at all. Overall there's too stark a transition from the cool white exterior lighting to the soft warm interior for you to perceive a relationship -- hence your poster look.



Not a great reference, but the first thing Google pulled up. Good luck!

Shaun

[percydaman]

well you need to experiment with brightening it up alot and also desaturating it some. Best think you could do is just take a photo of a space similiar to that one that shows outside and then use photoshop to try and mimic it.

[CCS]

Jet -

Another thing. (Not sure whether you did it or not.)

Don't "delete out" windows in PS. Save the image as a TGA with alpha. Then drop in the background in PS. If you have decent reflection/refraction, the glass will "cover" some of the bkgd. Then, adjust levels, hsv, etc. of the bkgd as suggested.