Viz4 Animation Jitter/Flicker Problem

[jbennett134]

I'm a senior undergrad architecture major having a problem with flicker in my animations with viz4. Pieces in my animation are animated and so I recompute the radiosity for each frame in an animation. The problem is this causes the colors of the surfaces to vary slightly and when viewed in the animation, makes the surfaces appear to flicker. NOt really sure what other info to give you so if you need more please ask. Any help would be great, I haven't found a thread yet that deals with this problem.

-Jason

[muzzy]

If you are using Automatic Exposure Control , that causes flicker with radiosity. Switch to Logorithmic Exposure control that should solve your problem.

 

Rendering> Environment> Exposure control

[jbennett134]

I've had logorithmic exposure control on. I did some reading on exposure control and it said that due to the randomness of the sampling with radiosity some flickering will occur. Is it worth trying to minimize the flickering or should I try to find a different renderer like vray or something?

[tcorbett]

I try not use radiosity during animation, opting for fakiosity instead. Radiosity created MAJOR headaches for me, even when using just the solution, (no recalculation per frame).

[Fran]

Hi Jason,

 

Do the pieces that are animated require radiosity, or can they be lit separately and excluded from radiosity? That way you wouldn't have to recompute for each frame.

[jbennett134]

There are around 30 moving pieces at once, so lighting them seperately may be a pain. They are a lot of opening and closing drawers, doors and shelves. What's fakiosity?

[jbennett134]

Okay. So I excluded all the moving pieces from the radiosity solution. Then added aabout 8 omni lights that only light the moving pieces. The jitter is gone and it looks a ton better. Thanks for the help guys.