POV-Ray : Newsgroups : povray.binaries.images : Playing with a heightfield... (69k) Server Time
19 Nov 2024 15:53:07 EST (-0500)
  Playing with a heightfield... (69k) (Message 1 to 10 of 10)  
From: Christoph Hormann
Subject: Playing with a heightfield... (69k)
Date: 24 Nov 2001 07:55:01
Message: <3BFF98A2.D1C9312D@gmx.de>
Applying some filters to a heightfield led to an interesting result so i
decided to make a scene of it...

Focal blur got a bit grainy, but i wasn't patient enough for better
settings.

Christoph

-- 
Christoph Hormann <chr### [at] gmxde>
IsoWood include, radiosity tutorial, TransSkin and other 
things on: http://www.schunter.etc.tu-bs.de/~chris/


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From: Bob H 
Subject: Re: Playing with a heightfield... (69k)
Date: 24 Nov 2001 08:10:40
Message: <3bff9c50$1@news.povray.org>
"Christoph Hormann" <chr### [at] gmxde> wrote in message
news:3BFF98A2.D1C9312D@gmx.de...
>
> Applying some filters to a heightfield led to an interesting result so i
> decided to make a scene of it...


Height field?  Guess it's the web-like sides of that cube then.

> Focal blur got a bit grainy, but i wasn't patient enough for better
> settings.

Where art is concerned it doesn't matter, and this image certainly has a
nice look to it.  Being able to see some jaggies at the focal plane is
another matter IMHO  ;-)  Sorry, had to say it!

Bob H.


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From: JRG
Subject: Re: Playing with a heightfield... (69k)
Date: 24 Nov 2001 08:16:54
Message: <3bff9dc6@news.povray.org>
I like this one! And the focal blur adds so much to the realism...

--
Jonathan.
"Christoph Hormann" <chr### [at] gmxde> ha scritto nel messaggio
news:3BFF98A2.D1C9312D@gmx.de...
>
> Applying some filters to a heightfield led to an interesting result so i
> decided to make a scene of it...
>
> Focal blur got a bit grainy, but i wasn't patient enough for better
> settings.
>
> Christoph
>
> --
> Christoph Hormann <chr### [at] gmxde>
> IsoWood include, radiosity tutorial, TransSkin and other
> things on: http://www.schunter.etc.tu-bs.de/~chris/


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From: Hugo
Subject: Re: Playing with a heightfield... (69k)
Date: 24 Nov 2001 08:21:43
Message: <3bff9ee7$1@news.povray.org>
Very nice!  What do you mean by  "applying some filters" ?


Regards,
Hugo


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From: Christoph Hormann
Subject: Re: Playing with a heightfield... (69k)
Date: 24 Nov 2001 08:49:20
Message: <3BFFA560.99F45D2D@gmx.de>
"Bob H." wrote:
> 
> Height field?  Guess it's the web-like sides of that cube then.
> 

Yes, of course.

> 
> Where art is concerned it doesn't matter, and this image certainly has a
> nice look to it.  Being able to see some jaggies at the focal plane is
> another matter IMHO  ;-)  Sorry, had to say it!
> 

That's probably a combination of missing antialiasing and jpeg artefacts,
maybe some smoothing afterwards would be good.

Christoph

-- 
Christoph Hormann <chr### [at] gmxde>
IsoWood include, radiosity tutorial, TransSkin and other 
things on: http://www.schunter.etc.tu-bs.de/~chris/


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From: Christoph Hormann
Subject: Re: Playing with a heightfield... (69k)
Date: 24 Nov 2001 08:52:05
Message: <3BFFA604.32EB6ED8@gmx.de>
Hugo wrote:
> 
> Very nice!  

Thanks!

> What do you mean by  "applying some filters" ?

Several matrix filters, mostly blurring.  I don't remember the exact
sequence.

Christoph

-- 
Christoph Hormann <chr### [at] gmxde>
IsoWood include, radiosity tutorial, TransSkin and other 
things on: http://www.schunter.etc.tu-bs.de/~chris/


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From: Christoph Hormann
Subject: Re: Playing with a heightfield... (69k)
Date: 24 Nov 2001 08:52:46
Message: <3BFFA62C.D297E0CA@gmx.de>
JRG wrote:
> 
> I like this one! And the focal blur adds so much to the realism...
> 

Thank you.

Christoph

-- 
Christoph Hormann <chr### [at] gmxde>
IsoWood include, radiosity tutorial, TransSkin and other 
things on: http://www.schunter.etc.tu-bs.de/~chris/


Post a reply to this message

From: JRG
Subject: Re: Playing with a heightfield... (69k)
Date: 24 Nov 2001 08:55:03
Message: <3bffa6b7@news.povray.org>
Did you start with some *hand made* sketches? By "hand made" I mean made
with a paint program.

"Christoph Hormann" <chr### [at] gmxde> ha scritto nel messaggio
news:3BFFA604.32EB6ED8@gmx.de...
>
>
> Hugo wrote:
> >
> > Very nice!
>
> Thanks!
>
> > What do you mean by  "applying some filters" ?
>
> Several matrix filters, mostly blurring.  I don't remember the exact
> sequence.
>
> Christoph
>
> --
> Christoph Hormann <chr### [at] gmxde>
> IsoWood include, radiosity tutorial, TransSkin and other
> things on: http://www.schunter.etc.tu-bs.de/~chris/


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From: Christoph Hormann
Subject: Re: Playing with a heightfield... (69k)
Date: 24 Nov 2001 09:48:09
Message: <3BFFB329.76B88127@gmx.de>
JRG wrote:
> 
> Did you start with some *hand made* sketches? By "hand made" I mean made
> with a paint program.
> 

Not really, i used a faulting algorithm like described for example in:

http://www.lysator.liu.se/~johol/fwmg/fwmg.html

with very few iterations and applied a differentiation filter afterwards. 
The result is similar to drawing some random lines.  

Christoph

-- 
Christoph Hormann <chr### [at] gmxde>
IsoWood include, radiosity tutorial, TransSkin and other 
things on: http://www.schunter.etc.tu-bs.de/~chris/


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From:
Subject: Re: Playing with a heightfield... (69k)
Date: 25 Nov 2001 00:14:49
Message: <3c007e49@news.povray.org>
"Christoph Hormann" <chr### [at] gmxde> wrote in message
news:3BFF98A2.D1C9312D@gmx.de...
>
> Applying some filters to a heightfield led to an interesting result so i
> decided to make a scene of it...
>
> Focal blur got a bit grainy, but i wasn't patient enough for better
> settings.
>
> Christoph

It reminds me of a crystallization experiment of sodium acetate at my high
school's chemistry laboratory! Very pretty!

Fernando.


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