POV-Ray : Newsgroups : povray.binaries.images : skin shader test (60k jpg) Server Time
6 Nov 2024 02:22:10 EST (-0500)
  skin shader test (60k jpg) (Message 1 to 6 of 6)  
From: stbenge
Subject: skin shader test (60k jpg)
Date: 10 Aug 2008 20:07:28
Message: <489f82c0@news.povray.org>
Hi,

The head was modeled first in LightWave, and then brought into Blender 
to sculpt in some details. The image took 3 minutes, 6 seconds to render 
(including parse time). The mesh parsed in... 7-10 seconds, and the SSS 
took roughly 45 seconds to parse. I used my newly-released SSS macro, of 
course. Actually, that's not completely true, since I made some 
modifications to the macro so it creates a tighter effect. It still 
looks quite a bit like wax, though a surface normal would undoubtedly 
help things.

I'll have to eventually release another version of the proximity/SSS 
macros, since I made have made some modifications to them.

Sam


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From: Jim Charter
Subject: Re: skin shader test (60k jpg)
Date: 11 Aug 2008 20:43:19
Message: <48a0dca7$1@news.povray.org>
stbenge wrote:

> modifications to the macro so it creates a tighter effect. It still 
> looks quite a bit like wax, though a surface normal would undoubtedly 
> help things.
> 
No doubt.  Also, fair pigmented skin is not nearly so smoothly colored.


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From: stbenge
Subject: Re: skin shader test (60k jpg)
Date: 12 Aug 2008 17:33:35
Message: <48a201af$1@news.povray.org>
Jim Charter wrote:
> stbenge wrote:
> 
>> modifications to the macro so it creates a tighter effect. It still 
>> looks quite a bit like wax, though a surface normal would undoubtedly 
>> help things.
>>
> No doubt.  Also, fair pigmented skin is not nearly so smoothly colored.

You're right. In some people you can clearly see distinct patches of color.

Sam


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From: Jaime Vives Piqueres
Subject: Re: skin shader test (82k jpg)
Date: 13 Aug 2008 02:54:51
Message: <48a2853b@news.povray.org>
Hi Sam:

    Here is my first try with your fastSSS, using my photo-skin tests. The
first image is just the plain image_map without radiosity, and the second
is the result of just using the fastSSS pigment as a texture map pattern.
The result is even better than using media, as it has no artifacts and is
easy to setup, and indeed is much faster (even adding area_light and
focal_blur was not much slower).

   I can't stop wondering how the hell you do to figure out all these
incredible techniques... it's simply amazing. Being very selfish, I hope
your artistic side doesn't take over the technical one... ;)

--
Jaime


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cabeza-stbengesss-02b.jpg

Preview of image 'cabeza-stbengesss-03.jpg'
cabeza-stbengesss-03.jpg


 

From: stbenge
Subject: Re: skin shader test (82k jpg)
Date: 15 Aug 2008 17:02:33
Message: <48a5eee9@news.povray.org>
Jaime Vives Piqueres wrote:
> Hi Sam:
> 
>    Here is my first try with your fastSSS, using my photo-skin tests. The
> first image is just the plain image_map without radiosity, and the second
> is the result of just using the fastSSS pigment as a texture map pattern.
> The result is even better than using media, as it has no artifacts and is
> easy to setup, and indeed is much faster (even adding area_light and
> focal_blur was not much slower).

I'm glad somebody is using it! It seems to have worked well for your model.

It can still be pretty slow to parse. If POV-Ray supports aoi for 
arbitrary points in space someday, there might be a way to trick the 
technique into rendering a comparable result with even less parse time.

>   I can't stop wondering how the hell you do to figure out all these
> incredible techniques... it's simply amazing.

I spend waaay too much time thinking about rendering ;)

> Being very selfish, I hope
> your artistic side doesn't take over the technical one... ;)
> -- 
> Jaime

Having started CG because of my interest in art makes me wonder how my 
technical side has overridden my artistic side! I want to focus my 
attention from render features to feature renders ;)

Sam


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From: nemesis
Subject: Re: skin shader test (82k jpg)
Date: 1 Oct 2008 00:05:05
Message: <48e2f6f1$1@news.povray.org>
Amazing!  That skin pigment map is also incredibly detailed!

Clash of Titans! XD


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