Authors / CoAuthors
Abstract
Geoscience Australia is responsible for the records and custody of Commonwealth aerial photography, acquired since 1928 up to the most recent analogue film capture in mid-1990s. Subsequent comparable information is available in the form of satellite imagery or direct digital aerial image capture. The majority of the landmass of Australia is covered by black and white photography at 1:80,000 scale. The near complete coverage was undertaken three times, in 1950s, 1960s and 1980s. Metadata about aerial photo surveys is recorded as flight diagrams on 1:250,000, 1:100,000 & 1:50,000 maps showing the approximate aircraft flight paths, selective depiction of photo centres, and other survey parameters. <b>Value:</b> Aerial imagery can be used to study change over time for land use, vegetation, environmental quality, etc. <b>Scope: </b>Images in the collection have been acquired since 1928 up to the most recent analogue film capture in mid-1990s. Subsequent comparable information is available in the form of satellite imagery or direct digital aerial image capture. The majority of the landmass of Australia is covered by black and white photography at 1:80,000 scale. The near complete coverage was undertaken three times, in 1950s, 1960s and 1980s.
Product Type
collection
eCat Id
144649
Contact for the resource
Point of contact
Cnr Jerrabomberra Ave and Hindmarsh Dr GPO Box 378
Canberra
ACT
2601
Australia
Resource provider
Point of contact
- Contact instructions
- Place and Communities
Keywords
- theme.ANZRC Fields of Research.rdf
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- EARTH SCIENCES
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- HVC_144649
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- HVC - High Value Collection
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- DC2020
- ( {1} )
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- aerial photography
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- Published_External
Publication Date
2021-11-05T04:19:18
Creation Date
Security Constraints
Legal Constraints
Status
onGoing
Purpose
Aerial imagery can be used to study change over time for land use, vegetation, environmental quality, etc.
Maintenance Information
annually
Topic Category
Series Information
Lineage
<b>Source:</b> Commonwealth<br /> <br /> <b>Form:</b> Only one third of the collection has been digitised to-date from film i.e. most of the collection is still only available on film. All digitised material is stored as raw images at full resolution in lossless format, and at a reduced resolutions in lossy format. Very few images are rectified and mosaicked. The majority of flight diagrams have been scanned to high resolution images and georeferenced. All flight diagrams have also been converted to a vector database to enable support for spatial searches. Work is ongoing.<br /> <br /> This Collection record was created to enhance the discoverability and management of the individual products contained in the collection. See the individual eCat records for product specific lineage.
Parent Information
Extents
[-44.00, -9.00, 112.00, 154.00]
Reference System
Spatial Resolution
The ground sample distance (GSD) in a digital photo of the ground from air is the distance between pixel centres measured on the ground. GSD for a scanned photo depends on the scanning resolution and the scale of the original photography. This collection is being scanned mostly at 16 microns (µm) resolution and the scale ranges from approximately 1:10,000 to 1:80,000. Therefore, the GSD represented in digitised material within this collection ranges from approximately 15 centimetres (cm) to 1.3 meters (m).
Service Information
Associations
Source Information