Have anyone here tried the demo of Bsmooth at: http://www.bsmooth.de/

It claims to produce 16-bit gray PGM files, but POV-ray seems unwilling
to accept them, saying:
"Invalid width or height read from PPM image."

It also produces 16-bit gray Photoshop-files, but I don't quite know how
to convert them into something useful. Any ideas?

Last, any other suggestions on how to create and edit 16-bit gray images
for POV-ray is very welcome.

Tom Stone

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In article <3D398003.44328224@swipnet.se> , Tom Stone <tom### [at] swipnetse>
wrote:

> It also produces 16-bit gray Photoshop-files, but I don't quite know how
> to convert them into something useful. Any ideas?

Use 16 bit PNG images.  To gte a 16 bit PNG image it might be possible to
use GraphicsConverter to convert the PGM or PSD files to PNG.  However, i am
not sure GraphicsConverter supports 16 bit per color component image output
in any format...

    Thorsten

____________________________________________________
Thorsten Froehlich, Duisburg, Germany
e-mail: tho### [at] trfde

Visit POV-Ray on the web: http://mac.povray.org

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in article 3d60ff32@news.povray.org, Thorsten Froehlich at tho### [at] trfde
wrote on 8/19/02 10:22 AM:

> In article <3D398003.44328224@swipnet.se> , Tom Stone <tom### [at] swipnetse>
> wrote:
> 
>> It also produces 16-bit gray Photoshop-files, but I don't quite know how
>> to convert them into something useful. Any ideas?
> 
> Use 16 bit PNG images.  To gte a 16 bit PNG image it might be possible to
> use GraphicsConverter to convert the PGM or PSD files to PNG.  However, i am
> not sure GraphicsConverter supports 16 bit per color component image output
> in any format...
> 
> Thorsten
> 
> ____________________________________________________
> Thorsten Froehlich, Duisburg, Germany
> e-mail: tho### [at] trfde
> 
> Visit POV-Ray on the web: http://mac.povray.org

I just wrote an email to Klaus Busse, the author of BSmooth, requesting
direct POV export in the form of .POT and/or Mesh2.  His address is
  
con### [at] klausbussede

Perhaps some others would like to make a similar request?  Strength in
numbers and all that...

Peace,

Glenn

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Thorsten Froehlich wrote:


Use 16 bit PNG images.  To gte a 16 bit PNG image it might be possible to

> use GraphicsConverter to convert the PGM or PSD files to PNG.  However, i am
> not sure GraphicsConverter supports 16 bit per color component image output
> in any format...

I've tried that, but unfortunately GraphicConverter doesn't support 16-bit
images. Would love to use 16-bit PNG files for heightfields, but so far I
haven't found any way to create them.

Although, I've finally found another way to create16-bit heightfields for POV:
1 - Open or paint an image in PhotoShop.
2 - Convert to 16-bit colors.
3 - Convert to Grayscale.
4 - Save as RAW (and make a note of the dimensions of the image)
5 - Open MacDEM ( from http://www.treeswallow.com/macdem )
6 - Import as RAW
7 - Export as Povray 16-bit TGA

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There's a 16-bit PNG Photoshop plugin available free at this site:

http://www.fnordware.com/

I've downloaded and installed it, but I haven't tried it out. Seems like 
it should work though.

RJay


In article <3D629F5F.62C6C9B5@swipnet.se>,
 Tom Stone <tom### [at] swipnetse> wrote:
> 
> I've tried that, but unfortunately GraphicConverter doesn't support 16-bit
> images. Would love to use 16-bit PNG files for heightfields, but so far I
> haven't found any way to create them.
> 
> Although, I've finally found another way to create16-bit heightfields for POV:
> 1 - Open or paint an image in PhotoShop.
> 2 - Convert to 16-bit colors.
> 3 - Convert to Grayscale.
> 4 - Save as RAW (and make a note of the dimensions of the image)
> 5 - Open MacDEM ( from http://www.treeswallow.com/macdem )
> 6 - Import as RAW
> 7 - Export as Povray 16-bit TGA
>

Post a reply to this message

RJay wrote:

> There's a 16-bit PNG Photoshop plugin available free at this site:
>
> http://www.fnordware.com/
>
> I've downloaded and installed it, but I haven't tried it out. Seems like
> it should work though.

I've tried it a while back, but it didn't work on Photoshop version 5.0. Just tried
it with 16-bit grayscale, though... So either it only deals with color images, or
it only works on newer versions of Photoshop. Unless I've done something wrong of
course. Let me know if you can make it work.

Tom

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Ran a test today. Using Photoshop v. 6 I created a greyscale document. 
Airbrushed some white blobs on a black background, go to Mode>16 
Bits/Channel then save as SuperPNG. Used this as heightfield, tested 
w/MacMegaPOV 0.7. It worked!!!

I could send you a sample PNG file if you can't get it to work w/PS 5.

RJay

In article <3D63DBCA.97B21F4B@swipnet.se>,
 Tom Stone <tom### [at] swipnetse> wrote:

> RJay wrote:
> 
> > There's a 16-bit PNG Photoshop plugin available free at this site:
> >
> > http://www.fnordware.com/
> >
> 
> I've tried it a while back, but it didn't work on Photoshop version 5.0. Just 
> tried
> it with 16-bit grayscale, though... So either it only deals with color 
> images, or
> it only works on newer versions of Photoshop. Unless I've done something 
> wrong of
> course. Let me know if you can make it work.
> 
> Tom
>

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