[thomas lacroix]

let the render going and going and going...

[Thomas An.]

Hi,

Me again (the new user)

All my renderings are "noisy".
I don't see how I could make better.
Could s.o. hep me ?

Thanks,

Vincent.

There are some things you can do to minimize noise.
There are some noise troubleshoting pointers here:
http://www.metinseven.com/article_maxwe ... tricks.htm

Note: If you have glass in the scene, then set the abbe number to 500 (I often set it to 1000) because dispersion takes way too ling to clear at this Maxwell WIP stage.

Also Maxwell's dispersion spectrum has a slight glitch in the order of its colors. http://www.maxwellrender.com/forum/view ... ight=prism

-

[j_petrucci]

Maxwell renderings are based on electromagnetic calculations, so, if you give it enought time, it will converge to the optimal solution, but far from there it introduces noise for unsolved "portions" of the image; the only solution is to use a noise reduction program like Neat Image.

[znouza]

Maxwell renderings are based on electromagnetic calculations, so, if you give it enought time, it will converge to the optimal solution, but far from there it introduces noise for unsolved "portions" of the image; the only solution is to use a noise reduction program like Neat Image.

or to render to bit larger image (eg. resized 800xsomething should be originally rendered as 1280xsomething)... so after denoise and resize it should be pretty clean..

[thomas lacroix]

comme ce n'etait que ton deuxieme ou troisieme message je me suis permis de t'indiquer la premiere chose a faire pour avoir moins de bruit, c'est a dire laisser tourner le calcul, apres il est vrai que les matieres de verre genere du bruit mais ceci t'as ete indiqué precedement, d'autre part il y a une fonction recherche sur le forum et le sujet aa ete mainte fois aborder, désolé si tu as mal pris ma reponse, désolé...

as it was your second or third message in the forum, i give you the first answer that come in mind, letin the render goin', otherwise other gave you other solution and theres also a search engine on the forulm and the topic has been aborded several times, sorry if you took it wrong no pun intended...

[Thomas An.]

sorry but,i can't try to insert the my image.jpeg
how can i do ,for show the scene?

thank for who help me
franco[/img][/list]

you can use www.imageshack.us

[thomas lacroix]

seems a bit out of focus to me...
for the rest i'm not a rhino user yet...

[Thomas An.]

(interiors are not my specialty, but I'll play along)

Overal, this sounds kinda normal because the scene is indoors (lots of bouncing light) and the metallic objects in the scene are spreading around caustic noise.

I tried a test similar to your room and it took just about as long.

What are the dimensions of your room ? It seems too small (judging by the DOF)


Here is my test after 3hours (sampling level "18"). There is still noise.
I don't think there is much you can do other than
a) let it cook longer
b) use www.NeatImage.com to treat the noise
c) wait for june15 when Maxwell becomes about 4x faster.

[Micha]

I like to use a denoiser and "downscale". A denoiser is a must for Maxwell user.

[j_petrucci]

Conan, this is the denoised version of your image:

nice output, huh!?

cheers...

[Micha]

My biggest problem in maxwell is the strange DOF camera shake effect like in the image from conan.

[Eric Lagman]

Don't forget the beta version comes out Wednesday. NL is claiming a 4x increase in speed or more. That will help some with our noise issues.

[Micha]

After some test I find a good way for me (maxwell 1.33): render in double size with "high quality" + two times denoise + downscale 50%bring less noise and better details (as in the same time like normal size and one time denoise). I get sampling level 12 in double size and sampling level 15 in normal size.

It is not a strong effect, but a small step for a better quality in the same time.

[Siegfried Kircheis]

How to achieve the " High Quality " anyway ?
I set the sampling level to 16 and 870 min, the screen still shows normal quality.

[Micha]

Sorry, with high I mean normal quality. High quality is normal in Maxwell.