Muad'dib
01-23-2005, 08:39 AM
There was a bit of talk in the Arch. forum to see if you could control colour bleeding in radiosity renders. Appears that there is quite an easy way without resorting to post nor excluding bits from the radiosity solution.
I thought I might post it here where it's probably more appropriate. Not a 100% perfect solution but it works well enough and all straight in LW ... with just a little trickery of course.
http://paulatreides.homestead.com/files/bleed1.jpg
Normal LW render (FPrime) - MC 2 bounces and as you can see excessive bleeding
http://paulatreides.homestead.com/files/bleed2.jpg
Normal LW render (Fprime) - MC 2 bounces - blue and green surfaces changed
... much less bleeding
http://paulatreides.homestead.com/files/bleed3.jpg
Normal LW render (Fprime) - MC 2 bounces - blue and green surfaces changed some more ... even less bleeding (notice the reflection colour change tho - I did't say it was perfect)
Way you go about it ...
Make a copy of the pesky surface to another layer and give it a different surface name ... eg. in my case layer 2 and 3 is the same pool table ... one called green other green2, and same goes for the floor.
In the Second image these are the settings used for both green table and blue floor .... (probably the more likable of the 2 images)
Layer 2 : unseen by rays, green=diffuse 100%
Layer 3 : unseen by camera, object dissolve 25%, green2=diffuse 75%
In the Third image these are the settings used for both green table and blue floor .... (much less bleed but as you see reflections are slightly off colour due to the tweek)
Layer 2 : unseen by rays, green=diffuse 100%
Layer 3 : unseen by camera, object dissolve 50%, green2=diffuse 50%
You can also flip this whole thing on it's head and see what it gives you :D
Layer 2 : unseen by camera, object dissolve 25%, green=diffuse 75%
Layer 3 : unseen by rays, green2=diffuse 100%
But wait there's more ... it's also a way to knock back the colour reflection level of the surfaces in question.
Hope this helps some of you.
Regards,
Muad'dib ;)
I thought I might post it here where it's probably more appropriate. Not a 100% perfect solution but it works well enough and all straight in LW ... with just a little trickery of course.
http://paulatreides.homestead.com/files/bleed1.jpg
Normal LW render (FPrime) - MC 2 bounces and as you can see excessive bleeding
http://paulatreides.homestead.com/files/bleed2.jpg
Normal LW render (Fprime) - MC 2 bounces - blue and green surfaces changed
... much less bleeding
http://paulatreides.homestead.com/files/bleed3.jpg
Normal LW render (Fprime) - MC 2 bounces - blue and green surfaces changed some more ... even less bleeding (notice the reflection colour change tho - I did't say it was perfect)
Way you go about it ...
Make a copy of the pesky surface to another layer and give it a different surface name ... eg. in my case layer 2 and 3 is the same pool table ... one called green other green2, and same goes for the floor.
In the Second image these are the settings used for both green table and blue floor .... (probably the more likable of the 2 images)
Layer 2 : unseen by rays, green=diffuse 100%
Layer 3 : unseen by camera, object dissolve 25%, green2=diffuse 75%
In the Third image these are the settings used for both green table and blue floor .... (much less bleed but as you see reflections are slightly off colour due to the tweek)
Layer 2 : unseen by rays, green=diffuse 100%
Layer 3 : unseen by camera, object dissolve 50%, green2=diffuse 50%
You can also flip this whole thing on it's head and see what it gives you :D
Layer 2 : unseen by camera, object dissolve 25%, green=diffuse 75%
Layer 3 : unseen by rays, green2=diffuse 100%
But wait there's more ... it's also a way to knock back the colour reflection level of the surfaces in question.
Hope this helps some of you.
Regards,
Muad'dib ;)