Better indexing on bitsavers

[Jan-Benedict Glaw]

On Fri, 2005-05-20 10:25:10 -0500, John Foust <jfoust at threedee.com> wrote:
> At 10:01 AM 5/20/2005, Jules Richardson wrote:
> >Only about 20% of tools I've come across over the years actually
> >try and handle TIFFs properly
> 
> With tagged formats, the problem in my mind has always been
> a lack of mechanism for an app to decide what to do with 
> unknown tags while processing a file.  Do you throw out the
> tags or keep them?  

Ask the user. There's no sane way to decide wether a tag may be thrown
away or should be thrown away. Just two sample cases:

	For astronomical use, you want to keep all tags. They contain
	important image information (most important they contain RA and
	declination as well as the size of the image).

	If you're photoshop'ping your digital stil-camera's pictures,
	you'd actually like to throw away the tags. Most prominent,
	there are smaller preview images embedded that may or may not be
	a "good" preview image after some servere photoshopping...

MfG, JBG

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