UCSB SPOT Catalog
Update, January 2009: The external SPOT@UCSB program has ended (imagery is still available, but to UCSB researchers only) and the Catalog has been shut down. This page is entirely historical at this point.
If you're interested in SPOT imagery, you almost certainly want the UCSB Center for SPOT Imagery instead. This website contains only technical information about the SPOT program and UCSB's SPOT catalog.
- Contents
- Overview
The Catalog
Collection metadata
Browse image archive
SCIE record archive
Implementation notes
Technical docs
- Overview
- The UCSB SPOT Catalog is a complete, up-to-date, worldwide metadata database for SPOT/Image remote-sensing imagery. The database is essentially a clone of Sirius except for the handling of incomplete scenes: whereas Sirius contains incomplete scenes which must be manually "shifted" to become complete scenes before purchasing (actually, Sirius allows all scenes to be shifted), the UCSB catalog minimally pre-shifts all incomplete scenes and thus effectively contains complete scenes only. In addition, the UCSB catalog groups scenes that are near-duplicates of each other (e.g., the "same" scene as acquired by different ground stations) and selects only the "best" representative from each group for display, thereby reducing the total number of scenes. The database is updated daily by harvesting Sirius; multiple, staggered harvest passes capture both new scenes and modifications to older scenes. Access to the database (programmatic and end-user) is provided by Alexandria Digital Library software. The UCSB catalog also helps manage UCSB's local archive of SPOT imagery and supports the UCSB Center for SPOT Imagery's purchase order system.
- The Catalog
- User interface
- Underlying ADL middleware:
- Base URL: http://sit.spot.ucsb.edu:8080/middleware/
Status
- Browse image archive
- As part of catalog development, we are in the process of acquiring
browse images and thumbnails (500×500 and 128×128 color
JPEGs, respectively) for every SPOT scene. To our knowledge, such a
readily available, synoptic view of the SPOT dataset is not available
anywhere else, including from SPOT/Image itself. The primary purpose
of this archive is to support the catalog, of course, but it may be
useful for other purposes such as testing image processing algorithms.
Contact the page author for access; access is subject to approval.
- Samples:
- Browse
image
Thumbnail - Statistics:
- Number of scenes: 15,839,481
Total size: 2,581 GB
- SCIE record archive
- Analogous to the browse image archive, we have acquired SCIE-format metadata records for every SPOT scene. These records are available for bulk download in gzip-compressed textual form. Contact the page author for access; access is subject to approval.
- Technical docs
-
- SPOT Grid Reference System (GRS):
-
High-level
description
Detailed
description
Node coordinates: WORLDKJ1.txt.gz [2.1MB]
Cloud cover ratings
Shifting SPOT scenes
SPOT
mirror and incidence angles
last modified 2009-11-19 13:06