AWARE SYSTEMS
TIFF and LibTiff Mail List Archive

Thread

2005.08.03 09:27 "[Tiff] Overlay Hyperlinks On TIFF", by Chux Amobi
2005.08.03 15:27 "Re: [Tiff] Overlay Hyperlinks On TIFF", by Bob Friesenhahn
2005.08.08 11:02 "Re: [Tiff] Overlay Hyperlinks On TIFF", by Rob van den Tillaart
2005.08.08 11:32 "Re: [Tiff] Overlay Hyperlinks On TIFF", by Joris Van Damme
2005.08.08 13:55 "Re: [Tiff] Overlay Hyperlinks On TIFF", by Rob van den Tillaart
2005.08.08 15:01 "Re: [Tiff] Overlay Hyperlinks On TIFF", by Joris Van Damme
2005.08.08 15:18 "Re: [Tiff] Overlay Hyperlinks On TIFF", by Joris Van Damme
2005.08.09 06:33 "Re: [Tiff] Overlay Hyperlinks On TIFF", by Rob van den Tillaart
2005.08.09 08:45 "Re: [Tiff] Overlay Hyperlinks On TIFF", by Joris Van Damme
2005.08.09 10:16 "Re: [Tiff] Overlay Hyperlinks On TIFF", by Rob van den Tillaart
2005.08.09 15:20 "Re: [Tiff] Overlay Hyperlinks On TIFF", by Bob Friesenhahn
2005.08.09 15:36 "Re: [Tiff] Overlay Hyperlinks On TIFF", by Joris Van Damme
2005.08.08 11:43 "Re: [Tiff] Overlay Hyperlinks On TIFF", by Joris Van Damme
2005.08.09 10:29 "Re: [Tiff] Overlay Hyperlinks On TIFF", by Joris Van Damme

2005.08.08 11:43 "Re: [Tiff] Overlay Hyperlinks On TIFF", by Joris Van Damme

Rob,

Forgot to answer this one:

Drawback: manipulating the image could corrupt the integrity and validity of the area params if they are preserved at all. (integrity tag needed)

The integrity tag is an invention of your own, not an invention included in the TIFF file format.

The same integrity problem also presents itself for a number of other data's, like pagenumber, thumbnails, and whatnot. I imagine that if GeoTIFF includes data on the size of the area covered, the cropping the image corrupts that data too. Etc, etc.

It's not a problem, actually, as the correct copy/edit/manipulate procedure is to only preserve the tags the code knows that can be preserved. One should not ever do a 'blind tag copy'.

Joris Van Damme
info@awaresystems.be
http://www.awaresystems.be/
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