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Re: re-warping an image file [message #28010 is a reply to message #27937]

Wed, 14 November 2001 12:27

Logan Lindquist
Messages: 50
Registered: October 2001

Member

Kristen,

"Kristen" <glinka@rmc.ca> wrote in message
news:9636b724.0111131422.3ee72bb4@posting.google.com...
> I have received Ikonos 4.9m imagery from an outside source, and the

Sounds classified. See any Afghan camels? I am not sure what the Ikonos data
looks like. I would assume that it comes to you broken up into seperate
images. A couple questions.

I am not sure of the spec's on Ikonos and Landsat [not Landat ?? right] but
I think that Ikonos is higher res and Landsat is lower. From this
assumption, you are trying to take a higher res Ikonos and overlay it with
lower res Landsat images. Taking higher res to lower res you are going to
run into matching problems. I do not know if this is the warping that you
are talking about?

I wouldn't think that the images are exactly the same, probably taken from
different angles and the satellites having different optics would all lead
to problems with aligning them. If you could overlay a temporary grid
pattern that matched to the Longitude and Latitude in the area, with
apporate sub ticks allowing for micro positioning between the images.

If you could identify a major land mass or object on land, which you knew
the Longitude and Latitude of then overlaying the grid wouldn't be a major
problem [I would think].

Hope this helps,

Logan Lindquist

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[Message index]

		re-warping an image file By: glinka on Tue, 13 November 2001 14:22
		Re: re-warping an image file By: Logan Lindquist on Wed, 14 November 2001 12:27
		Re: re-warping an image file By: cjengo on Fri, 16 November 2001 06:15

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