Use of a spatial expert system shell to develop automated techniques for detection and classification of sea ice in AVHRR imagery
The development of an operational sea ice mapping system. This metadata record refers to the development and testing of an prototype system, ICEMAPPER, to interpret NOAA AVHRR imagery on a semi-automatic basis, off the Southern Ocean near to the Antarctic coast. From the abstract of one of the refer...
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ftands:oai:ands.org.au::700340 2023-05-15T13:46:58+02:00 Use of a spatial expert system shell to develop automated techniques for detection and classification of sea ice in AVHRR imagery WILLIAMS, RAYMOND (hasPrincipalInvestigator) WILLIAMS, RAYMOND (processor) Australian Antarctic Data Centre (publisher) Spatial: northlimit=-60.0; southlimit=-70.0; westlimit=62.0; eastLimit=159.0; projection=WGS84 Temporal: From 1995-09-30 to 1997-03-31 https://researchdata.ands.org.au/use-spatial-expert-avhrr-imagery/700340 https://data.aad.gov.au/metadata/records/ASAC_907 http://nla.gov.au/nla.party-617536 unknown Australian Antarctic Data Centre https://researchdata.ands.org.au/use-spatial-expert-avhrr-imagery/700340 2273c804-3fb6-4f9c-858a-57ab983fa185 ASAC_907 https://data.aad.gov.au/metadata/records/ASAC_907 http://nla.gov.au/nla.party-617536 Australian Antarctic Data Centre oceans ICE TYPES EARTH SCIENCE CRYOSPHERE SEA ICE AVHRR AVHRR > Advanced Very High Resolution Radiometer SATELLITES CONTINENT > ANTARCTICA GEOGRAPHIC REGION > POLAR dataset ftands 2020-01-05T21:17:29Z The development of an operational sea ice mapping system. This metadata record refers to the development and testing of an prototype system, ICEMAPPER, to interpret NOAA AVHRR imagery on a semi-automatic basis, off the Southern Ocean near to the Antarctic coast. From the abstract of one of the referenced papers: This paper reports work towards the development of a semi-automated technique for creating sea-ice and cloud maps from Advanced Very High Resolution Radiometer (AVHRR) images of the Southern Ocean near to the Antarctic coast. The technique is implemented as a computer-based system which applies a number of classification rules to the five bands of an AVHRR image and classifies each pixel in the image as representing open water, low cloud, high cloud or one of several different sea ice concentration categories. The map produced by the system is then displayed and an experienced sea ice forecaster evaluates the result. If it is deemed satisfactory the map is saved on disk. If not, the expert can alter various parameters within the classification rules to produce a satisfactory map. Experience so far has shown that judicious, but reasonably minor, changes to the rule parameters can produce a satisfactory sea-ice map relatively quickly in most cases. The system is also capable of effectively distinguishing cloudy from clear pixels but it does not accurately distinguish high cloud from low cloud in some of the images. Current work is being undertaken to improve the cloud classification rules. Dataset Antarc* Antarctic Antarctica Sea ice Southern Ocean Research Data Australia (Australian National Data Service - ANDS) Antarctic Southern Ocean The Antarctic ENVELOPE(62.0,159.0,-60.0,-70.0) |
institution |
Open Polar |
collection |
Research Data Australia (Australian National Data Service - ANDS) |
op_collection_id |
ftands |
language |
unknown |
topic |
oceans ICE TYPES EARTH SCIENCE CRYOSPHERE SEA ICE AVHRR AVHRR > Advanced Very High Resolution Radiometer SATELLITES CONTINENT > ANTARCTICA GEOGRAPHIC REGION > POLAR |
spellingShingle |
oceans ICE TYPES EARTH SCIENCE CRYOSPHERE SEA ICE AVHRR AVHRR > Advanced Very High Resolution Radiometer SATELLITES CONTINENT > ANTARCTICA GEOGRAPHIC REGION > POLAR Use of a spatial expert system shell to develop automated techniques for detection and classification of sea ice in AVHRR imagery |
topic_facet |
oceans ICE TYPES EARTH SCIENCE CRYOSPHERE SEA ICE AVHRR AVHRR > Advanced Very High Resolution Radiometer SATELLITES CONTINENT > ANTARCTICA GEOGRAPHIC REGION > POLAR |
description |
The development of an operational sea ice mapping system. This metadata record refers to the development and testing of an prototype system, ICEMAPPER, to interpret NOAA AVHRR imagery on a semi-automatic basis, off the Southern Ocean near to the Antarctic coast. From the abstract of one of the referenced papers: This paper reports work towards the development of a semi-automated technique for creating sea-ice and cloud maps from Advanced Very High Resolution Radiometer (AVHRR) images of the Southern Ocean near to the Antarctic coast. The technique is implemented as a computer-based system which applies a number of classification rules to the five bands of an AVHRR image and classifies each pixel in the image as representing open water, low cloud, high cloud or one of several different sea ice concentration categories. The map produced by the system is then displayed and an experienced sea ice forecaster evaluates the result. If it is deemed satisfactory the map is saved on disk. If not, the expert can alter various parameters within the classification rules to produce a satisfactory map. Experience so far has shown that judicious, but reasonably minor, changes to the rule parameters can produce a satisfactory sea-ice map relatively quickly in most cases. The system is also capable of effectively distinguishing cloudy from clear pixels but it does not accurately distinguish high cloud from low cloud in some of the images. Current work is being undertaken to improve the cloud classification rules. |
author2 |
WILLIAMS, RAYMOND (hasPrincipalInvestigator) WILLIAMS, RAYMOND (processor) Australian Antarctic Data Centre (publisher) |
format |
Dataset |
title |
Use of a spatial expert system shell to develop automated techniques for detection and classification of sea ice in AVHRR imagery |
title_short |
Use of a spatial expert system shell to develop automated techniques for detection and classification of sea ice in AVHRR imagery |
title_full |
Use of a spatial expert system shell to develop automated techniques for detection and classification of sea ice in AVHRR imagery |
title_fullStr |
Use of a spatial expert system shell to develop automated techniques for detection and classification of sea ice in AVHRR imagery |
title_full_unstemmed |
Use of a spatial expert system shell to develop automated techniques for detection and classification of sea ice in AVHRR imagery |
title_sort |
use of a spatial expert system shell to develop automated techniques for detection and classification of sea ice in avhrr imagery |
publisher |
Australian Antarctic Data Centre |
url |
https://researchdata.ands.org.au/use-spatial-expert-avhrr-imagery/700340 https://data.aad.gov.au/metadata/records/ASAC_907 http://nla.gov.au/nla.party-617536 |
op_coverage |
Spatial: northlimit=-60.0; southlimit=-70.0; westlimit=62.0; eastLimit=159.0; projection=WGS84 Temporal: From 1995-09-30 to 1997-03-31 |
long_lat |
ENVELOPE(62.0,159.0,-60.0,-70.0) |
geographic |
Antarctic Southern Ocean The Antarctic |
geographic_facet |
Antarctic Southern Ocean The Antarctic |
genre |
Antarc* Antarctic Antarctica Sea ice Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctica Sea ice Southern Ocean |
op_source |
Australian Antarctic Data Centre |
op_relation |
https://researchdata.ands.org.au/use-spatial-expert-avhrr-imagery/700340 2273c804-3fb6-4f9c-858a-57ab983fa185 ASAC_907 https://data.aad.gov.au/metadata/records/ASAC_907 http://nla.gov.au/nla.party-617536 |
_version_ |
1766245914062618624 |