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Date: Sat, 25 Nov 2006 23:30:13 +0530
From: "Sachin Garg" <schngrg@gmail.com>
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Subject: Re: [Tiff] Windows HD Photo - any interest?
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Status:   

On 11/25/06, Frank Warmerdam <warmerdam@pobox.com> wrote:
> Sachin Garg wrote:
> > Unless I have missed something, I think it should be possible to
> > include its support in libtiff, else libjpeg style approach can
> > ofcourse be used. (I am not a lawyer)
>
> Sachin,
>
> I can't say that I have a good understanding of the HD Photo format.
> It seems to use TIFF style directories, but to maintain it's own
> complete set of baseline tags, making it ... not TIFF at all really.
>
> I'd suggest you experiment with support for it either in a working fork
> of libtiff or in something that can be layered on libtiff (in the way that
> geotiff is) for now.  Perhaps when we see what a minimum-disruption
> approach to supporting HD Photo would look like, we (the libtiff maintainers)
> would be more comfortable with it's incorporation in the core.
>
> Though I haven't dug deep, on the face of it I'm very offended that
> Microsoft has chosen to "do it's own thing" without regard to existing
> standards.  Like Andrey, I don't feel inclined to bend over backward to
> make up for their offense.
>
> Nevertheless, if you can be patient, perhaps you can bring us around and
> we can end up with a libtiff that supports their format smoothly, at
> least for reading.

To be honest, I myself don't know much about its internals and agree
with you that its not a good thing that its not entirely a tiff
extension like DNG, which I think follows the standard and is
supported by libtiff. (I wonder why they chose to do it this way,
maybe I should read the specifications first :-)

Sachin Garg [India]
www.sachingarg.com | www.c10n.info
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