Re: Convert very highres image to tiled EXR?

Florian Kainz <[email protected]> Thu, 10 Apr 2008 14:26:58 -0700
Newsgroups gmane.comp.video.openexr.user
Message-ID <[email protected]>
Martin,

As Michael says, STL on Windows in 32-bit mode limits the maximum
file size to 2 GBytes.  Programs compiled for Linux, OSX or for
64-bit Windows should not have this limitation.  On 32-bit Windows
you can work around the 2 GByte limit by supplying your own low-level
file I/O routines, as explained in section 8 of this document:

     http://www.openexr.com/ReadingAndWritingImageFiles.pdf

Michael's low-level I/O routines for Windows have not yet been merged
into the OpenEXR CVS repository.

Florian



Michael Wolf wrote:
> On Thu, 10 Apr 2008 13:08:59 +0200, Martin Breidt <[email protected]> wrote:
> 
>>Hello,
> 
> Hi Martin,
> 
>>I am trying to convert a 40k * 40k image into a tiled EXR, but cannot
>>find any tool that will do so.
>>
>>The original image is in .ecw format but I can convert that to TIFF
>>(2.6GB) or JPG (700MB).
>>
>>Any suggestions how I could convert hat file?
> 
> If you have LightWave 3D, download infiniMap LE (see my sig for the link), which does just that... amongst other things ;)
> 
> However, many OpenEXR supporting apps are not likely to be able to read OpenEXR images that are larger than 2GB, due to limitations of the STL library shipped with the MS compiler (which, by default, handles the i/o)...
> 
>>Thanks very much!
>>Martin
> 
> Cheers,
> Mike
> 
>