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Re: exif data in PNG?

From: zoran knezevic <zoransa@gmail.com>
Date: Wed, 20 Jun 2007 17:33:12 +0200
Message-ID: <ecea34890706200833k73eba98fi5d9a93e40defd16f@mail.gmail.com>
To: png-group@w3.org

> is there a PNG chunk type defined for Exif data?

> If not, is there any reason for not having it?

That's an old problem of self-documentation for PNG images. The PNG
specification allows labeled text (ASCII or UTF-8) elements to be
embedded in text chunks and predefines a few standard keywords
(element labels): Title, Author, Description, Copyright, Creation
Time, Software, Disclaimer, Warning, Source, Comment but not in Exif
format . An attempt in 2000 to develop open source tools to convert
EXIF images (including EXIF metadata) to PNG seems to have been
abandoned. See http://pmt.sourceforge.net/exif/drafts/d020.html.

---
Zoran
http://www.rentalio.com/ http://www.punmiris.com/
Received on Wednesday, 20 June 2007 15:33:16 GMT

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