POV-Ray : Newsgroups : povray.beta-test : Artifacts in output : Re: Artifacts in output Server Time
4 Jul 2024 13:12:49 EDT (-0400)
  Re: Artifacts in output  
From: Alain
Date: 2 Jan 2010 13:40:53
Message: <4b3f9335@news.povray.org>

> John Coppens<joh### [at] johncoppenscom>  wrote:
>> Hello people...
>>
>> I've switched mainly to beta34 now, and rendered a few test scenes for a
>> Xmas card. For the first time, I notice horizontal line(s) which don't
>> seem related to the scene.
>>
>> 1) They only seem to appear in lath objects,
>> 2) There seems to be some randomness in the intensity of the problem,
>> 3) Independently of the size, the artifact is always 1 pixel high.
>> 4) The effect is not is a spot where a bezier node is defined.
>> 5) Sturm is enabled for both glasses and contents.
>>
>> Here is an image where the artifact is _very_ visible:
>>
>> http://jcoppens.com/misc/ok2fault.png (1.1MB)
>>
>> If interested, I can upload the scene and background pic too.
>>
>> John
>
> Hi John,
> Can't view your image @ http://jcoppens.com/misc/ok2fault.png
>
> Forbidden
>
> You don't have permission to access /misc/ok2fault.png on this server.
>
> Additionally, a 404 Not Found error was encountered while trying to use an
> ErrorDocument to handle the request.
>
> Cheers,
> Peter
>
>
I can access that image without problem here.
Using Mozilla 3.5.6
I can see that the line appens in a straight part of the objects
There is a second, mich fainter, line slightly under the very obvious one.
In the right glass, there are 3 curved lines that looks like they can be 
other artefacts, or reflection of the original artefact. One bright 
flanked by 2 faint ones. Also visible in the reflection of that glass on 
the second glass.


Alain


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