Gloom-Effekt VRay/3DMax

[-SPM-Draget]

Hello there,

I am trying since a while to get a gloom effekt into moving pictures. The Gloom or HDR Effekt takes pixel that are out of the RGB-Space and create a 'halo' around them. Just luke a halo around a bight lamp... of if you look into an extremly bright spot the whole picture might end up white.

I archived this effekt by saving single pictures with high dynamic information from the VRay framebuffer and then trying to add the gloom in Photoshop. But I really wonder if there is some other better way... and some way for videos.

Any ideas?

Greetings
Draget

[Antediluvia]

First thing, it's bloom effect. :p


But to help you, I had the same problem a while ago - trying to find out how to do the bloom effect in 3dsmax (which I assume you're using). http://forums.3dtotal.com/showthread.php?t=51796 That topic should help you. Specifically this link here - http://www.neilblevins.com/cg_education/specular_bloom/specular_bloom.htm

[-SPM-Draget]

Thank you for the links.
And yes, I used 3DS Max 9 and VRay, like I mentioned in the title :-P


This is a nice way of faking it but not really what I want. I want to use the full dynamic range of my renders. When I save the picture from the VRay framebuffer, it can be converted into the OpenEXR format with the full dynamic information.
In Photoshop for example I can create this 'bloom'-overlay only using the really bright illuminated pixels even outside the colorrange of my final picture.
Thus only really 'bright' things will create a bloom, not anything that is just white.

But what can I do for animations? Hmm, while writing this post, I had the idea that this might be solved with a script... VRay saving the framebuffer per frame, a script convertig it to OpenEXR, another scrippt trying to add the bloom automated in photoshop and save it as a .png.

But this would be quite a waste of CPU-power o.o

Greetings
Draget