🚀 go-pugleaf

I am interested in learning about what Image Processing software
packages people are using for the analysis of multi-band data sets,
such as Landsat Imagery.  What are the major software packages in use? 
What are the capabilities of each package -- e.g. rectification,
classification, PC and IHS transformations, filtering, contrast
enhancement, overlays?  Is the software specifically designed for
remote-sensing images, medical images, or more generally for any kind
of multi-band images?  What are the hardware requirements? Any special
requirements for display systems?

I am particularly interested in any software for Macintosh platforms,
but would like to hear about packages that people are using on PCs and
UNIX workstations as well.  I am familiar with Terra-Mar's "MicroImage"
software, and have heard of "ERDAS" but know nothing about it.  I am
also familiar with some single-band image processing software such as
the excellent public-domain "NIH Image" program for the Macintosh.

I'll be glad to post a summary of the responses I receive.

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Tim Allen                                       
tim.allen@dartmouth.edu
Earth Science Department
Dartmouth College, Hanover, NH 03755