reduce noise in image question

[markf]

I have rendered this image

 

http://openrang.server269.com./test-posts/living02.jpg

 

I posted the link so a higher res image than allowed by the forum could be seen. Hope this works and is ok.

 

Settings used: Secondary bounce - QMC, Min rate- negative 6, max rate-0, HSph subdiv- 50, Interp samples 30. Rest default

 

There is noise on the wall and ceiling . esp noticable around shadow cast by TV. Any advice on which setting to change to eliminate this? Any other C&C about the image also welcome

 

Thanks for any help

[Christopher Nichols]

I have rendered this image

 

http://openrang.server269.com./test-posts/living02.jpg

 

I posted the link so a higher res image than allowed by the forum could be seen. Hope this works and is ok.

 

Settings used: Secondary bounce - QMC, Min rate- negative 6, max rate-0, HSph subdiv- 50, Interp samples 30. Rest default

 

There is noise on the wall and ceiling . esp noticable around shadow cast by TV. Any advice on which setting to change to eliminate this? Any other C&C about the image also welcome

 

Thanks for any help

 

Actually I noticed the tiling on the textures way before the noise. I would fix that too...

 

As for the noise.... your rates seem odd. What is the res? One quick way to reduce it is to increase the interpolated Samples to 50 or so. But if you have a high res image like that, you can usually go down to -5,-4... -6,0 seems extreme on both ends. Also, to get a little more noise control, if all else fails you can reduce the noise thresh on the rQMC to 0.002 or something like that.

[AJLynn]

I wouldn't have known there was noise there if you hadn't said there was.

[markf]

Christopher,

 

Thanks for your reply!

 

I notice the tiling on the edge of the counter top. Where else do you notice the tiling?

 

The res is 2,000px W x 1333H (that's the size of the image that the link above points to) I'm planning to final render at 3,000 W but haven't done so yet. I'm new to Vray and not sure if I need to adjust any settings for higher res.

 

I had the -6 rate on the advice of a person from the Chaos forum. He (Lele) seemed very knowledgable. He pointed out why decreasing the min rate actually improves the quality (I think) and reduces the render time. I'm not sure about 0 as the max rate. Do you think that these rates are causing the noise?

[Christopher Nichols]

To be fair with what andrew said, the noise you have is fairly light in the GI world. Nontheless it can stillbe reduced with not much of an issue. -6 is fine, the 0 is the issue. Try a -3 or so (which will help you when you go to 3k), and use reduce your noise threashold in the rQMC.

 

Tiling, it is in the mainly in the granite...

[markf]

Christopher,

 

Thank you for your helpful comments. I will try using -3 for the max. Got the noise down using the theshold at .005, seemed to work well.

[Christopher Nichols]

Christopher,

 

Thank you for your helpful comments. I will try using -3 for the max. Got the noise down using the theshold at .005, seemed to work well.

 

actually try -3 for the MIN and -5 or -6 for the max.

[SunGlare]

It's off topic, but I would bring the background lighter. It too dark, comparing to the splecular light on balcony or chair.

 

What bothers me is AA on the edge of table and wood chair.

 

Nice colors.

[markf]

Christopher,

 

Thanks for the correction, that's what I meant to say. Still getting used to V-ray.

 

Sunglare,

 

Thanks for the suggestion and I'll look into the AA