Oleguer Vilella wrote:
> Hi all,
> 
> I've to render a very big image. What format output file will be the best?
> I can't render it using .BMP.

Of course BMP is a very bad choice as output format for POV-Ray but it 
is unlikely that you run into any format specific limit.  The size limit 
of BMP is probably even higher than 65535x65535.  You will however run 
into trouble if your OS does not support very large files (the above 
size with 24bpp, uncompressed is already 12 GB)

Using PNG of PPM should be fine for all image sizes you might seriously 
want to render (but as said subject to the OS/file system capabilities).

Christoph

-- 
POV-Ray tutorials, include files, Landscape of the week:
http://www.tu-bs.de/~y0013390/ (Last updated 24 Jul. 2005)
MegaPOV with mechanics simulation: http://megapov.inetart.net/

Post a reply to this message

Hi Christoph,

Yeah, I think PNG will be the best. But using Windows I've to render it 
with -D to close the preview window, because if I use the preview window it 
gives an error.

And Targa format?

Regards,
Oleguer



news:ddsj44$5po$1@chho.imagico.de...
> Oleguer Vilella wrote:
>> Hi all,
>>
>> I've to render a very big image. What format output file will be the 
>> best?
>> I can't render it using .BMP.
>
> Of course BMP is a very bad choice as output format for POV-Ray but it is 
> unlikely that you run into any format specific limit.  The size limit of 
> BMP is probably even higher than 65535x65535.  You will however run into 
> trouble if your OS does not support very large files (the above size with 
> 24bpp, uncompressed is already 12 GB)
>
> Using PNG of PPM should be fine for all image sizes you might seriously 
> want to render (but as said subject to the OS/file system capabilities).
>
> Christoph
>
> -- 
> POV-Ray tutorials, include files, Landscape of the week:
> http://www.tu-bs.de/~y0013390/ (Last updated 24 Jul. 2005)
> MegaPOV with mechanics simulation: http://megapov.inetart.net/

Post a reply to this message

Oleguer Vilella <ole### [at] infonegociocom> wrote:
> And Targa format?

  What is it that you require from the image format? I didn't get that.

-- 

                                                          - Warp

Post a reply to this message

Yeah, file size and quality.



news:4301d522@news.povray.org...
> Oleguer Vilella <ole### [at] infonegociocom> wrote:
>> And Targa format?
>
>  What is it that you require from the image format? I didn't get that.
>
> -- 

>                                                          - Warp

Post a reply to this message

Oleguer Vilella <ole### [at] infonegociocom> wrote:
> Yeah, file size and quality.

  Well, for quality there's absolutely no difference between image
formats because all of them (ie. the ones supported by povray as output)
are lossless full-color formats.

  As for size, there's only one option: PNG.

-- 

                                                          - Warp

Post a reply to this message

Hi Warp,

All right. So I've done it right. I've done the image on Linux using PNG.

Thanks,
Oleguer




news:4302ef8b@news.povray.org...
> Oleguer Vilella <ole### [at] infonegociocom> wrote:
>> Yeah, file size and quality.
>
>  Well, for quality there's absolutely no difference between image
> formats because all of them (ie. the ones supported by povray as output)
> are lossless full-color formats.
>
>  As for size, there's only one option: PNG.
>
> -- 

>                                                          - Warp

Post a reply to this message

> All right. So I've done it right. I've done the image on Linux using PNG.

Note that POV-Ray doesn't compress PNG images as well as it could. If you
really want the compression (for instance, if you plan on posting it on the
newsgroups), you'll have to bring it into a 2D image editor and resave it.

 - Slime
 [ http://www.slimeland.com/ ]

Post a reply to this message

Slime <fak### [at] emailaddress> wrote:
> Note that POV-Ray doesn't compress PNG images as well as it could.

  The file sizes don't differ all that much from optimized pngs...

> If you
> really want the compression (for instance, if you plan on posting it on the
> newsgroups), you'll have to bring it into a 2D image editor and resave it.

  Better to use a png optimizer (such as optipng or advpng) than just a
random image editor (which usually do a rather poor job).

-- 

                                                          - Warp

Post a reply to this message

Well, sometimes I used PhotoShop to resize images and to change the file 
format.

Regards,
Oleguer




news:4305cee6@news.povray.org...
> Slime <fak### [at] emailaddress> wrote:
>> Note that POV-Ray doesn't compress PNG images as well as it could.
>
>  The file sizes don't differ all that much from optimized pngs...
>
>> If you
>> really want the compression (for instance, if you plan on posting it on 
>> the
>> newsgroups), you'll have to bring it into a 2D image editor and resave 
>> it.
>
>  Better to use a png optimizer (such as optipng or advpng) than just a
> random image editor (which usually do a rather poor job).
>
> -- 

>                                                          - Warp

Post a reply to this message