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Date: Wed, 22 Sep 1999 18:43:46 +0200 (CEST)
From: Umberto Fracassi <[log in to unmask]>
Subject: airphoto mosaic
Sender: Umberto Fracassi <[log in to unmask]>



Hi all,

first of all, apologies for cross postings - and for the rather basic
question..!

I have a set of about 50 scanned aerial images, that I need to re-compose
in a mosaic. Of course, the target is to have them georeferenced, somehow
a little orthocorrected (if possible..)..
Then, I have a two-fold question.

The first is:
- graphical. I scanned the photos @ 300 dpi, acquiring the whole image.
Although for georeferencing I'll use the fiducials (which lie within the
main photo boundary), do I need to retain the black border at all (with
the flight and frame number)..? I know this sounds a bit stupid..

and the second is:
- a bit more technical. To obtain the mosaic, I have assumed that, once I
georeference every image, then any mosaicking routine 'should' recognise
the location of each photo and place each where it should - also
compensating for the slight difference in scale among photos and
flightlines..? - Is this really going to be this straightforward (..) or
am I missing some crucial point..?

Sorry for the rather basic issue, it's the first time I go digital in
mosaicking airphotos..

Thanks in advance for any help!


Umberto

Umberto Fracassi

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Dip.to di Scienze della Terra
Universita' di Firenze
Via I. Nardi, 2
50132 Firenze
Italy

Tel:    +39-055-243486
Fax:    +39-055-241595
Email:  [log in to unmask]
WWW:    http://ewse.ceo.org/construct/build.pl/665027
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"This is what you should do: Love the earth and the sun and the animals,
despise riches, give alms to everyone that asks, stand up for the stupid
and crazy, devote your income and labor to others, hate tyrants, argue not
concerning god, have patience and indulgence toward people, take off your
hat to nothing known or unknown, or to anyone or number of people
...reexamine all you have been told at school or church, or in any book,
dismiss what insults your soul, and your very flesh shall be a great
poem."

Walt Whitman
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