POW - Update for the PDS Map Projection Web Service
Trent M. Hare, S.W. Akins, R.M. Sucharski, M.S. Bailen, J. Shute, J.A. Anderson, and L.R. Gaddis; Astrogeology Science Center. [email protected]
•
Introduction: In July of 2013, the USGS Astrogeology Science Center
publicly released a tool called the Map Projection on the Web Service
(POW). This free online service transforms raw Planetary Data System
(PDS) images to science-ready, map-projected images. POW uses PDS
Imaging Node tools (PILOT and UPC) to locate images and then allows
the user to select and submit individual images to be map-projected.
This process uses Astrogeology’s image processing package called the
Integrated Software for Imagers and Spectrometers (ISIS, currently in
version 3). In the last six months, we have had over a hundred users
register and the system has processed thousands of images.
Available POW Processing Functionality:
1 - Request an account at http://astrocloud.wr.usgs.gov by
» Select up to 50 images to process from PILOT
2 - Find and selected images from PILOT. We currently have
» Images are calibrated using recommended
methods defined by USGS and instrument teams
selecting the “Request User Account” link.
a 50 image limit. http://pilot.wr.usgs.gov/
» Selecting an output map projection
3 - In PILOT, select the “download” button.
MGS
MRO
CTX
Getting Started with POW
Themis
LROC
NA
calibration
4 - Select a single instrument from your search, and push
list into the POW ordering interface.
SPICE
map
projection
5 - Select your POW processing parameters (e.g. map projection, resolution, output format) and submit job.
5 - When your processing request is completed you will re-
instruments currently supported in POW :
Mars
Reconnaissance
CTX
•• Cassini
Imaging
Science Subsystem Orbiter
(ISS) and Visible
and
Spectrometer (VIMS)
• Infrared
LunarMapping
Reconnaissance
Orbiter C.
• Odyssey THEMIS IR
• Clementine Near Infrared (NIR), Ultraviolet and
•
Mars
Express
HRSC
Visible (UVVIS), High Resolution (HIRES),
• Mars Global Surveyor MOC
•• Galileo
Solid State Imaging
(SSI)
Clementine
HIRES
Clementine
NIR
•• Lunar
Reconnaissance
Orbiter Wide Angle Camera
(WAC),
Narrow Angle Camera
(LROC-NACL, LROC-NACR)
• Clementine
UV/VIS
•
Messenger
MDIS-NAC
• Mariner 10 vidicon cameras (VID A, VID B)
• Messenger MDIS-WAC
•• Mars
Express
High
Resolution
Stereo
Camera
(HRSC)
Cassini ISSNA
Cassini
ISSWA
•• Mars
Global Surveyor
Mars Orbiter Wide Angle
Camera
(MOC-WAC),
NarrowSSI
Angle Camera (MOC-NAC)
• Galileo
Orbiter
•
Viking
VIS
1A
• Mars Reconnaissance Orbiter Context Camera (CTX)
• Viking VIS 1B
•• Messenger
Dual Imaging System (MDIS-WAC,
VikingMercury
VIS 2A
MDIS-NAC)
• Viking VIS 2B
•• Mars
Odyssey Thermal
Imaging System
Voyager
NACEmission
1
(THEMIS-IR, THEMIS-VIS)
• Voyager WAC 1
•• Viking
Orbiter 1NAC
& 2 vidicon
Voyager
2 cameras (VIS-1B, VIS-2A,
VIS-2B)
• Voyager WAC 2
Mariner
10 VID
A Subsystem (ISS)
•• Voyager
I & II Imaging
Science
vidicon
cameras (NAC-1,
NAC-2,
• Mariner
10 VID
B WAC-1, WAC-2)
Acknowledgments: This project was supported by NASA’s PG&G
Cartography Program. To use POW, please create a login on this
website: http://astrocloud.wr.usgs.gov/
ceive an e-mail with the finished processing that includes:
» A .zip archive of all the files.
» Download links for the new data products.
» A log of the ISIS3 and GDAL commands used.
Polar Stereographic, Sinusoidal, Mercator, Transverse
Mercator, Simple Cylindrical, Robinson, Lambert Conformal Conic, Lambert Azimuthal, Equirectangular
» Selecting which band(s) from a multi-band
image to use for grayscale or an RGB image
» File format for the finished product including
GeoTIFF, GeoJPEG2000, ISIS3 cube, PDS
image, or simple graphic formats like Jpeg
and PNG with GIS headers.
Example of images in a GIS once processed using POW
Integrated Tools
ISIS - Integrated Software for
Imagers and Spectrometers
PILOT - Planetary Image
LOcator Tool
GDAL - Geospatial Data
Abstraction Library
Selecting Images for POW processing
The Future of POW: Since the release of POW, we have had many ideas for
a variety of future uses from in-house and external users. Below are some
of these potential improvements.
• Geometric Backplanes: Longitude, Latitude, radius, phase and emission angles, north and sun azimuths, etc.)
• Custom Calibrations and CDR support: For some missions, the CDR
archive volume can be prohibitive to store for the average science data
user. To help with the rapidly increasing archive volumes, POW can deliver
on-demand CDR products using the original mission pipeline in lieu of
storing the CDR data.
Download or
Process in POW
The Planetary Image Locator Tool (PILOT) is a web-based interface that provides a robust search interface for several Planetary Data System (PDS) image catalogs available from the Unified Planetary Coordinates (UPC) database.
• Control, Tonal Matches, and Mosaics: POW will be able to take advantage of these ISIS methods along with any improvements to SPICE to
enhance the registration of delivered images. ISIS also supports the capability to tonally match multiple images to each other. This is accomplished
using photometric corrections and/or pure statistical equalization methods. Equalization functionality could be added to POW for creating groups
of images that have been tonally matched and properly blended into a
seamless image mosaic.
• Job Submissions: We have created a selection and submission tool
within the GIS application ArcMap or other GIS application. We are also
considering methods such that logins will not be required for trusted
users. This would potentially allow outside facilities to use POW as part of
their processing pipelines.