Visualization of HDF/HDF-EOS Format Earth Observing System Data Using the ISIS "cv" Program

Details Visualization of HDF/HDF-EOS Format Earth Observing System Data Using the ISIS "cv" Program Visualization of HDF/HDF-EOS Format Earth Observing System Data Using the ISIS "cv" Program

May 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001agusm...u21a18t&link_type=abstract

American Geophysical Union, Spring Meeting 2001, abstract #U21A-18

Other

1640 Remote Sensing, 1694 Instruments And Techniques, 9820 Techniques Applicable In Three Or More Fields

Scientific paper

The "cv" (Cube Visualization) program has been used for a number of years as part of the ISIS image processing system (Integrated Software for Imagers and Spectrometers) [1],[2]. In addition to reading the native ISIS image cube format, "cv" has recently been enhanced to directly read the HDF and HDF-EOS file formats used for distributing data from various Earth Observing System (EOS) Missions (e.g. the Terra and Landsat-7 satellites). Files based on HDF Version 4.x are supported; files based on the new HDF 5.x are not yet supported. "cv" is now packaged so that it can be used without installing the rest of the ISIS software system. The capabilities of the program include: Displays (as images) any Swath/Grid data fields in HDF-EOS files; Displays (as images) any Scientific Data Set (SDS) data fields in HDF files; Combines multiple HDF/HDF-EOS fields to form one display object; Subarea selection and/or subsampling (allows handling large files); Simultaneous display of multiple images/files; Plots intensity profiles along any of the three axes in a 3D data set; Writes displayed data fields to binary files (allows doing further processing using ISIS programs or using other software packages); Reports cursor location and pixel value (includes reporting Latitude/Longitude with optional conversion between geocentric and geographic coordinates); Includes many additional flexible display options. The "cv" program is implemented in the IDL language and makes use of the IDL CALL_EXTERNAL capability to call I/O and utility routines written in C and Fortran. Pre-compiled versions of "cv" are available for Sun Solaris, Compaq Alpha and PC Linux platforms. To obtain "cv", go to the USGS anonymous ftp site (ftpflag.wr.usgs.gov). Do a "cd dist/isis" and get (in binary mode) the README_CV.TXT file (installation instructions) and the tar file for the desired platform (cv_sun.tar, cv_alpha.tar, cv_pc.tar). More information on ISIS is available at the ISIS website (http://wwwflag.wr.usgs.gov/ISIS). References: [1] Torson, J.M., and Becker, K.J., (1997), ISIS - A Software Architecture for Processing Planetary Images, Lunar and Plan. Sci. XXVIII, 387-388, [2] Gaddis, L., (1996), Use of ISIS for Processing and Analysis of Planetary Remote Sensing data, GSA Abstracts with Programs, v. 28, No. 7, p. A-286.

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