POV-Ray : Newsgroups : povray.general : Grayscale Server Time
1 Aug 2024 16:29:56 EDT (-0400)
  Grayscale (Message 1 to 3 of 3)  
From: Ryan
Subject: Grayscale
Date: 23 Jun 2005 04:40:00
Message: <web.42ba75299907254ce5987fa60@news.povray.org>
Hi, I've generated a 16bit PNG RGB image from a .pov demo, but need this in
16bit grayscale format? PshopPro reads the image in as 8bit and only allows
editing in 8 bit, anyone know of any good shareware 16 bit editors or a way
to force POV-Ray to generate a grayscale rendering, not color?

Thanks!


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From: Christoph Hormann
Subject: Re: Grayscale
Date: 23 Jun 2005 06:30:01
Message: <d9e2sk$9qb$1@chho.imagico.de>
Ryan wrote:
> Hi, I've generated a 16bit PNG RGB image from a .pov demo, but need this in
> 16bit grayscale format? PshopPro reads the image in as 8bit and only allows
> editing in 8 bit, anyone know of any good shareware 16 bit editors or a way

Not shareware but:

http://www.imagemagick.org/
http://cinepaint.sourceforge.net/

> to force POV-Ray to generate a grayscale rendering, not color?

global_settings { hf_gray_16 on }

Christoph

-- 
POV-Ray tutorials, include files, Sim-POV,
HCR-Edit and more: http://www.tu-bs.de/~y0013390/
Last updated 03 May. 2005 _____./\/^>_*_<^\/\.______


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From: Mike Williams
Subject: Re: Grayscale
Date: 23 Jun 2005 12:17:22
Message: <AcMMZBA38quCFwjq@econym.demon.co.uk>
Wasn't it Ryan who wrote:
>Hi, I've generated a 16bit PNG RGB image from a .pov demo, but need this in
>16bit grayscale format? PshopPro reads the image in as 8bit and only allows
>editing in 8 bit, anyone know of any good shareware 16 bit editors or a way
>to force POV-Ray to generate a grayscale rendering, not color?

Although it doesn't directly address your problem, you might be
interested to note that it's possible to write third-party plugins that
operate on 16bit greyscale data that can be called from within PSP or
other image processing programs. The data is accessible and the plugin
can consider the format to be 16bit greyscale even if the calling
program thinks that its RGB. There are two simple plugins on my webpage
<http://www.econym.demon.co.uk/plugins/hf.htm> (I hope I spelled that
right) that deal with POV-compatible 16bit heightfield processing.

-- 
Mike Williams
Gentleman of Leisure


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