[mapserver-users] JP2 Ortho Aerials
Jukka.Rahkonen at mmmtike.fi
Tue May 13 15:04:44 EDT 2008
For my mind the best software for this task is called MapServer.
Just define GeoTIFF output format and ask for an image with the height and
width you want. Then it will be easy to save the image and use it
as a quick look layer.
Lähettäjä: mapserver-users-bounces at lists.osgeo.org puolesta: J.J. Schlafley
Lähetetty: ti 13.5.2008 21:47
Vastaanottaja: Nelson Soto; mapserver-users at lists.osgeo.org
Aihe: Re: [mapserver-users] JP2 Ortho Aerials
Create a new image by resampling the image with desktop GIS software....ArcGIS, MapInfo etc. This will allow you to create a new image file with desired resolution, effectively lowering file size.
----- Original Message ----
From: Nelson Soto <nellyfromma at gmail.com>
To: mapserver-users at lists.osgeo.org
Sent: Tuesday, May 13, 2008 1:37:54 PM
Subject: [mapserver-users] JP2 Ortho Aerials
I have a set of 6 Ortho Tiles in JP2 format that I downlaods from
MassGIS. I have created a tile index from them and have created a
mapfile that uses this index to tile the files for display
accordingly. They do display properly.
I do beleive they have multiple resolution images within each tile,
but when zoomed out to the extents of the town, it can be an intensive
task to load up images for all six tiles.
I think the easiest way to remedy this is to use the mapfile to shut
off the Ortho Aerials at a particular scale and swap in the lower res
jpeg that places over the same extents.
My question is based on personal experience, what is the easiest way
to go about this? Something as simple as 'print screen'? Are there any
good freeware jp2 viewers that I can use to save a particular view of
6 tiles down to perhaps a tiff file? The ortho's need not have
transparency themselves for this particular instance.
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