Updated on 21 May 2012
By Anthony Buckner
6.4 MB Safe To Install
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Specifications
License:
Freeware
Updated:
Downloads:
837
Platform:
PPC, Mac OS
Publisher:
Purdue Research Foundation(more)
User Reviews:
Other versions:
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Publisher's Descriptions
MultiSpec is a processing system for interactively analyzing Earth observational multispectral image data such as that produced by the Landsat series of Earth satellites and hyperspectral image data from current and future airborne and spaceborne systems such as AVIRIS. The primary objective of MultiSpec is as an aid to export the results of our research into devising good methods for analyzing such hyperspectral image data. It has also found significant use in other applications such as multiband medical imagery and in K-12 and university level educational activities. There are currently in excess of several thousand known, registered users.

MultiSpec satisfies the following design goals:

The implementation should be on a readily available computer platform which has adequate processing power, but is financially within the reach of any Earth science researcher (i.e., computer platforms < $2000).
The system should be easy to learn and easy to use, even for the infrequent user, using the most modern of software environments.
The system should provide for easy import of data in a variety of formats, and easy export of results, both in thematic map and in tabular form.
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System Requirements
PPC / Intel, Mac OS X 10.3.1 or later
What's New
Version 3.4.1 (05.19.2012): General:
  • The gdal library was updated from version 1.7.3 to 1.9.0. File – Open Image:
  • The gdal libraries are now used to handle Imagine formatted images. Therefore MultiSpec can now handle compressed Imagine images.
  • MultiSpec can now handle the hdf5 format. This has been tested with GOSAT and VIIRS images. MultiSpec will also handle BAG (Bathymetry Attributed Grid) images. MultiSpec will interpret the metadata in the GOSAT images to set the map projection. One selects the dataset to be used from a popup menu in the file format specification dialog box like is done for files in hdf4 and netcdf format. The datasets are automatically grouped if they are in order, have similar dataset names (first 4 characters) and the same line/column/data type specs. One can also use the Processor->Utilities->List Image Description to get a listing of the metadata in the hdf5 files. Let me know if you run into problems handling hdf5 images; I am sure there are many variations. The hdf5 library version being used is 1.8.8. The gdal library is used as the interface between the hdf5 library and MultiSpec.
  • One item to note is that adding the hdf5 feature into MultiSpec increased the size of the application by more than 60%. Edit->Image Map Parameters:
  • Additional changes were made in the "Set Map Coordinate Specifications" dialog box. An option was added to define the reference coordinate system by the EPSG number. Several thousand reference systems have EPSG codes. When one sets the EPSG number, the parameters for the reference system are shown but they are not editable. As before, if one changes the reference system menu to User Defined, one can change the parameters. To make this all work, it is important to keep the epsg_csv folder with the MultiSpec application on Windows systems. This folder is part of the MultiSpec application package on Macintosh systems so if one moves the application, this folder (not seen) goes with it automatically.
  • The US Survey Feet units are now being handled consistantly.


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