produce fireflies

[nickliang]

Hi radiance,

I'm use HDR for lighting, Pathtracing calculation. But produce fireflies so much .
ask you will solve this problem?


Thanks~
Nickliang

[vinz]

hi,

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this is what i've listed:

1- you can use the radiance method, build a hires render, and then donwscale it with photoshop algorithm smooth.

2- someone do this by changing the hdr gamma

3- try to bluring your hdr map with convolution blur ( hdrshop)

5- probably you can reduce the bump map to 0.1 or less if you using mathematical textures maps

6- waiting for the 2.3 release with mlt.

choose the one that work the best for you

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personnaly i still have a lot of issue with fireflies and smoothing, i prefer to wait a little bit the 2.3 for starting to use it.

i hope its help.

vinz.

[bepea]

Reducing the roughness on glossy materials works as well( in my case it was < 0.0000079).

[nickliang]

thanks vinz,choose 6,

[radiance]

there's just too much bump. bump is not displacement and if you use large amounts of it you get bumps of centimeters thick and you get flies.
lower bump power to .1 max.

Radiance

[nickliang]

there's just too much bump. bump is not displacement and if you use large amounts of it you get bumps of centimeters thick and you get flies.
lower bump power to .1 max.

Radiance

thanks, Radiance
I try again.

[heydabop]

If you still have fireflies after that, here's a tutorial on the resizing method. It's worked quite well for me so far.
http://www.refractivesoftware.com/forum ... f=21&t=878

[nickliang]

If you still have fireflies after that, here's a tutorial on the resizing method. It's worked quite well for me so far.
http://www.refractivesoftware.com/forum ... f=21&t=878

thanks,
Looks need to big size,But this method of calculation would only slower.

[vinz]

I agree, the resize method is a trick but not really a solution.

especially for complexes scenes or scenes that we would want originaly hires.

[Proupin]

Downsampling is actually faster in most cases.