Well as far as I know the ability to edit a SID in its native format would have to be done using LizardTech's GeoExpress 8.5.
However, if you want compression in an open framework, JPEG2000 achieves results similar to SID without the proprietary licensing.
MEGIS uses JP2 exclusively since about 2009 to compress imagery and prepare it for our WMS server. We do 95% of the processing with open-source GDAL tools and Python scripting. ArcGIS is used for a small amount of processing. We can typically generate a series of scripts and run them. They may take 5 days to process (running in background), but only a few hours of actual user time.
GDAL is really an amazing suite of open-source tools, if you're not scared of command-line interfaces. You can rescale raster values, reproject, clip, rotate, change formats, compress imagery, generate world files, generate hillshades from DEMs, convert raster to vector and vice-versa, and more. All of that for free and completely scriptable.
===============================
Michael Smith
State GIS Manager, Maine Office of GIS
State of Maine, Office of Information Technology
michael.smith _at_ maine.gov
207-215-5530
Board Member, Maine GeoLibrary
Board Member, Maine GIS Users Group
State Rep, National States Geographic Information Council
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State House Station 174
264 Civic Center Drive
Augusta, ME 04333-0174
69o 47' 49.5"W 44o 20' 54.5"N
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From: Maine GeoNews [mailto:[log in to unmask]] On Behalf Of Kelly Bellis
Sent: Tuesday, September 18, 2012 9:15 AM
To: [log in to unmask]
Subject: Editing Mr. SID
How do you edit images which arrive compressed by Mr. SID?
Are you able to batch process a whole mess of Mr. SID images?
The workaround I've been using - at least until something better is known - is to open the Mr. SID image in a Global Mapper project (projection defined), export a geotiff with world and prj files, opening the tif in Photoshop and there be able to do just about any type of editing barring a trim / crop, and then save (still in tif format). Of course whatever initial advantage there had been afforded by Lizardtech's unprecedented compression is lost.
Thanks for sharing any trade secrets.
Kelly
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V. Kelly Bellis, PLS 2099 - 17 Union Street - Ellsworth, ME 04605
[log in to unmask]<mailto:[log in to unmask]> - 207.667.6912 - Horizon Surveying Co.
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