Hot Pixels, Hot Pixels Hot Pixels

Forums: Hot Pixels, Hot Pixels Hot Pixels
Poser (Integrated Plugin developed by Paul Kinnane)

Moderator: face_off

Forum rules
Please keep character renders sensibly modest, please do not post sexually explicit scenes of characters.

Hot Pixels, Hot Pixels Hot Pixels

Postby RGUS » Fri Apr 26, 2013 8:59 am

RGUS Fri Apr 26, 2013 8:59 am
OK... call me a dummy for not posting in the right forum... but this will do, since it Poser and Octane Plugin... but how the hell do you stop the hot pixel thingy... I mean... I render for 32 hours.. and still they are there... what do I need to change... being a dummy and all.
WEB: http://rgus.deviantart.com/
GPU: 1x Nvidia GTX TITAN 6GB - 436.02
RAM: 32GB
CPU: INTEL Core i7-3770K CPU @ 3.50GHz
SOFTWARE: Windows 10 Enterprise
DAZ Studio Pro Edition 4.11.0.383 (64 bit), DAZ Studio Plugin: 4.2.1.44 - Feb 15.2019
User avatar
RGUS
Licensed Customer
Licensed Customer
 
Posts: 277
Joined: Sun Mar 17, 2013 1:32 am
Location: New Zealand

Re: Hot Pixels, Hot Pixels Hot Pixels

Postby face_off » Fri Apr 26, 2013 9:05 am

face_off Fri Apr 26, 2013 9:05 am
Set hotpixel_removal to 0.
Increase caustic_blur to 1. (OK, 1 might be too much, but it's a start)
Use the 1 poly, singlesided emitters that the Create Emitters From Light scripts generates
If hotpixels are behind a specular material, there are a bunch of way to get rid of it which I can describe if needed
There are also "white balance" hotpixels, that are usually a few pixels big - adjust white balance to fix

If you need to render for more than 10 mins, something is setup wrong :-)

Paul
Win7/Win10/Mavericks/Mint 17 - GTX550Ti/GT640M
Octane Plugin Support : Poser, ArchiCAD, Revit, Inventor, AutoCAD, Rhino, Modo, Nuke, DAZ Studio
Pls read before submitting a support question
User avatar
face_off
Octane Plugin Developer
Octane Plugin Developer
 
Posts: 14051
Joined: Fri May 25, 2012 10:52 am
Location: Adelaide, Australia

Re: Hot Pixels, Hot Pixels Hot Pixels

Postby RGUS » Fri Apr 26, 2013 9:11 am

RGUS Fri Apr 26, 2013 9:11 am
face_off wrote:Set hotpixel_removal to 0.
Increase caustic_blur to 1. (OK, 1 might be too much, but it's a start)
Use the 1 poly, singlesided emitters that the Create Emitters From Light scripts generates
If hotpixels are behind a specular material, there are a bunch of way to get rid of it which I can describe if needed
There are also "white balance" hotpixels, that are usually a few pixels big - adjust white balance to fix

If you need to render for more than 10 mins, something is setup wrong :-)

Paul


Sounds good Paul
These are candle lights.. where do I find "hotpixel to 0"
And bunch of ways would be good... I have to convince more people to use Octane... slow... but happening.
Cheers mate
WEB: http://rgus.deviantart.com/
GPU: 1x Nvidia GTX TITAN 6GB - 436.02
RAM: 32GB
CPU: INTEL Core i7-3770K CPU @ 3.50GHz
SOFTWARE: Windows 10 Enterprise
DAZ Studio Pro Edition 4.11.0.383 (64 bit), DAZ Studio Plugin: 4.2.1.44 - Feb 15.2019
User avatar
RGUS
Licensed Customer
Licensed Customer
 
Posts: 277
Joined: Sun Mar 17, 2013 1:32 am
Location: New Zealand

Re: Hot Pixels, Hot Pixels Hot Pixels

Postby face_off » Fri Apr 26, 2013 10:54 am

face_off Fri Apr 26, 2013 10:54 am
"hotpixel_removal" is under "imaging". "imaging" can be one of your most useful nodes.

Candles are special cases - and Wim has done a lot of experimenting with them. In summary:
1) Don't have a glass surround around the candle
2) Use the least possible polygons for the flame.
3) Even with 2), the flame emitter geometry is unlikely to be big enough to give you a quality render, so put a bigger low-poly sphere or cube around the flame geometry, set it to opaque 0, and set it up as an emitter - it will do a better job than the flame than the flame can do.
4) Use a fill light (or low power "texture environment") - don't rely on the candle to light the scene

Check with Wim - he knows this area better.

Paul
Win7/Win10/Mavericks/Mint 17 - GTX550Ti/GT640M
Octane Plugin Support : Poser, ArchiCAD, Revit, Inventor, AutoCAD, Rhino, Modo, Nuke, DAZ Studio
Pls read before submitting a support question
User avatar
face_off
Octane Plugin Developer
Octane Plugin Developer
 
Posts: 14051
Joined: Fri May 25, 2012 10:52 am
Location: Adelaide, Australia

Re: Hot Pixels, Hot Pixels Hot Pixels

Postby samhal » Fri Oct 04, 2013 9:39 am

samhal Fri Oct 04, 2013 9:39 am
Cool Thanks Paul...I too was struggling with this candle thing.

Using the technique above I came up with this. 4210 [email protected]:36 minutes. Hot pixel at zero. I did however use one of the clear glass materials in LiveDB.

Image
i7 6800K (6 core), 24 GB, GTX 1080 8gb, Titan X 12gb
samhal
Licensed Customer
Licensed Customer
 
Posts: 227
Joined: Wed Apr 24, 2013 1:15 pm
Location: Austin

Return to Poser


Who is online

Users browsing this forum: No registered users and 2 guests

Fri Jul 10, 2020 12:54 am [ UTC ]