Re: [Openexr-user] Convert very highres image to tiled EXR?

[Florian Kainz]

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 <address@hidden> 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