Image Sampler and AA settings for displaced carpet

[tricky]

I am rendering the interior of an apartment using IRMap and LC. I am testing vraydisplacement on the carpet and wantdvice on which type of image sampler method to use and which AA filter to use. I usually use AdaptiveQMC and standard Area, but I am sure there is a better option - any rules of thumb?

[Morbid Angel]

To antialias a detailed object, and keep it steady through out the animation, that is if you have an animation, there is a certain amount of samples that has to be taken bla bla..we all know that. What is important is, detailed objects not to flicker through out the animation. Adaptive subdivision can achieve such result, however at the cost of memory and long time. With adaptive qmc and enough samples you can achieve a rock solid antialiasing, and much less time. For us, we render animations all the time, and without adaptive qmc...its a lot of pain in the ass, like rendering with mental ray which has only adaptive subdivision.

[Neilg]

Adaptive qmc, keep doing tests till it doesnt flicker/your rendertimes are managable. Theres no quick fix all solution, it all depends on what youre doing and your time constraints.

[tricky]

At the moment, this is just for stills, but I am noticing the carpet looking kind-of grainy and not soft like a carpet looks. Perhaps I'll post an image to explain tomorrow - its difficult discussing in the abstract.

I'm just using a black and white noise map created in Photoshop, 500x500 pixels, for the displacement

[Morbid Angel]

in general adaptive subdivision will produce softer result. However with adaptive qmc, and aa filtering you can achieve similar look.