my time zone thoughts

[Steve Herber <herber thing com>]

ZZI think we need support for time zones.  I would like to see a time
zone time line, sort of like an audio editor, where you can chop the
time line into segments and assign a time zone, and a clock adjustment,
a fudge factor, to each segment.  You could stretch the end of a segment
to to include more or less photos.

Imagine you have three cameras, a primary that is adjusted properly,
a secondary, where you have left it in the wrong time zone, and a third
where the time is just wrong.  When you import the pictures and enter
the time adjustment mode you might see a list of pictures like this:


thumbnail 	tz	EXIF			time	resulting
pictures	line	time			fudge	time

thumbnail 1	tz 1	2008.12.31 23:59:00	0	2008.12.31 23:59:00
thumbnail 2	tz 1	2008.12.31 23:59:01	0	2008.12.31 23:59:01
thumbnail 3	tz 1	2008.12.31 23:59:02	0	2008.12.31 23:59:02
thumbnail 4	tz 2	2008.12.31 23:39:03	+20min	2008.12.31 23:59:03
thumbnail 5	tz 2	2008.12.31 23:59:04	0	2008.12.31 23:59:04
thumbnail 5	tz 2	2008.12.31 23:59:05	0	2008.12.31 23:59:05

You can drag your time zone line to adjust that as needed, and you can
enter fudge values as needed to get the pictures in the right order.
As the resulting time expands, you might have other picture start to
appear and intermingle with your original set, so you could see any
overlap.  I guess this works best if a single person is shooting so you
only have one picture at each point in time.  Combining pictures from
multiple shooters gets interesting.

We already have the pictures, and EXIF time.  The database needs to
track the time zone and the fudge factor for each picture.  The fudge
factor can be reset to zero if the user allows EXIF updates.

I don't know how hard it is to build a nice GUI to manipulate the time
zone and time fudge.

Thanks,

--
Steve Herber	herber thing com		work: 206-221-7262
Security Engineer, UW Medicine, IT Services	home: 425-454-2399