Noise in render of transparent object

Noise in render of transparent object - Printable Version

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Noise in render of transparent object - Bas - 2016-08-26

Hi Guys,

I hope somebody can give me a tip how to remove noise from a POV-ray render of a glass object.

I made the model in LDD, exported it in LDD and converted the model with LDview to the POV format.

I used ambient lighting (3 standard light sources changed to ambient lights).

But as you can see the transparent train window shows noise.

Does anyone have a tip for me to reduce/remove the noice?

Thanx!

RE: Noise in render of transparent object - Damien Roux - 2016-08-28

Does this part have a pov equivalent ? If yes, it is maiby because there are coincident surfaces which make noise in povray.

Solution would be not to use the LGEO equivalent or to create your own without the problem.

RE: Noise in render of transparent object - Bas - 2016-08-28

(2016-08-28, 13:33)Damien Roux Wrote: Does this part have a pov equivalent ? If yes, it is maiby because there are coincident surfaces which make noise in povray.

Solution would be not to use the LGEO equivalent or to create your own without the problem.

Hi Damien,

Thanks for your response. I checked the /lg/ directory and there is a equivalent: lg_4036.
How do I bypass this LGEO version?

RE: Noise in render of transparent object - Damien Roux - 2016-08-28

(2016-08-28, 19:12)Bas Wrote: Hi Damien,

Thanks for your response. I checked the /lg/ directory and there is a equivalent: lg_4036.
How do I bypass this LGEO version?

Remove this in your LGEO.xml file :

        <Element>
           <LDrawFilename>4036.dat</LDrawFilename>
           <POVName>lg_4036</POVName>
           <POVName Alternate="Clear">lg_4036_clear</POVName>
           <Dependency>LGDefs</Dependency>
           <POVFilename>lg_4036.inc</POVFilename>
           <MatrixRef>LGEOTransform</MatrixRef>
       </Element>

RE: Noise in render of transparent object - Bas - 2016-08-28

(2016-08-28, 21:08)Damien Roux Wrote:
(2016-08-28, 19:12)Bas Wrote: Hi Damien,

Thanks for your response. I checked the /lg/ directory and there is a equivalent: lg_4036.
How do I bypass this LGEO version?

Remove this in your LGEO.xml file :

        <Element>
           <LDrawFilename>4036.dat</LDrawFilename>
           <POVName>lg_4036</POVName>
           <POVName Alternate="Clear">lg_4036_clear</POVName>
           <Dependency>LGDefs</Dependency>
           <POVFilename>lg_4036.inc</POVFilename>
           <MatrixRef>LGEOTransform</MatrixRef>
       </Element>

Will do! Thanks! I will let you know if it works!

RE: Noise in render of transparent object - Bas - 2016-08-29

It worked!

Thanx Damien!

RE: Noise in render of transparent object - Michael Horvath - 2016-09-16

Clear plastic parts look too "milky" in LGEO/POV output IMO.

RE: Noise in render of transparent object - Damien Roux - 2016-09-16

(2016-09-16, 5:59)Michael Horvath Wrote: Clear plastic parts look too "milky" in LGEO/POV output IMO.

Try using radiosity instead of classic lightning.

RE: Noise in render of transparent object - Michael Horvath - 2016-09-25

(2016-09-16, 6:47)Damien Roux Wrote:
(2016-09-16, 5:59)Michael Horvath Wrote: Clear plastic parts look too "milky" in LGEO/POV output IMO.

Try using radiosity instead of classic lightning.

Yes, I am using LGEO. Here's a good example:

https://www.flickr.com/photos/108839565@N04/29469026205/in/dateposted-public/

You can hardly see through the glass.

RE: Noise in render of transparent object - Orion Pobursky - 2016-09-26

Quote:Yes, I am using LGEO. Here's a good example:

https://www.flickr.com/photos/108839565@N04/29469026205/in/dateposted-public/

You can hardly see through the glass.

Looks like I need to revive my lugnetcolors.inc file
Also +1 for radiosity. Transparency is rendered way better

RE: Noise in render of transparent object - Michael Horvath - 2016-09-26

I am using radiosity.

RE: Noise in render of transparent object - Damien Roux - 2016-09-26

Try to get an updated lg_colors.inc file. Try the ldraw AIOI.

RE: Noise in render of transparent object - Michael Horvath - 2016-09-26

(2016-09-26, 6:26)Damien Roux Wrote: Try to get an updated lg_colors.inc file. Try the ldraw AIOI.

I could only find "lg_color.inc" not "lg_colors.inc".

What is the modification date for your copy of this file? The changelog for the one I'm using says, "2013-05-27 Owen Burgoyne altered reflection for transparent parts" for the latest version.

RE: Noise in render of transparent object - Damien Roux - 2016-09-26

Yes, it is that one lg_color.inc

Could you post it here, I will have a look and compare it to mine.

RE: Noise in render of transparent object - Michael Horvath - 2016-09-26

(2016-09-26, 8:51)Damien Roux Wrote: Yes, it is that one lg_color.inc

Could you post it here, I will have a look and compare it to mine.

Here it is.