Accession Number:

ADA244456

Title:

OSIRRUS: Oceanic Symbolic Image Representation, Recognition and Understanding Software

Descriptive Note:

Final rept. 1 Aug 89-10 Nov 90,

Corporate Author:

CONSULTANTS CHOICE INC ATLANTA GA

Personal Author(s):

Report Date:

1990-12-01

Pagination or Media Count:

57.0

Abstract:

Detection and proper labeling of oceanic mesoscale features in remotely sensed data is a mission of NOARLs Ocean Science Directorate. Automated identification of eddy rings and Gulf Stream walls two oceanic mesoscale features of specific interest in infrared satellite imagery using isotherm shape identification is a viable approach. This report presents the completion of work done on eddy ring detection using shape identification and statistical analysis on detection features to reduce false alarms. An eddy ring is a large parcel of circulating ocean water, created from detached ocean stream undulations, having a trapped core of water whose temperature is markedly different from its surrounding water. Warm eddy rings have warm cores, and cold eddy rings have cold cores. Oceanic Symbolic Image Representation, Recognition and Understanding Software OSIRRUS converts imagery to a symbolic form in the sense that data converted to a list of contiguous pixel points representing a contour of constant temperature on a thermal topology, which is termed an isotherm. Ideally, isotherms form characteristic shapes that envelop mesoscale features, such as eddy rings. Shapes identifying potential areas of interest are analyzed with an additional temperature profile to confirm eddy ring detection and provide automatically extracted measurements useful to a mission specialist.

Subject Categories:

  • Physical and Dynamic Oceanography
  • Optics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE