[mapserver-users] JP2 Ortho Aerials

[J.J. Schlafley]

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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