Authors / CoAuthors
Grove, R.
Abstract
These datasets cover approximately 514 sq km over the Towns of Esk, Kilcoy and Toogoolawah and over Lockyer Creek Gap in the Somerset Regional Council and are part of the 2011 Inland Towns Stage 3 LiDAR capture project. This section of the project, undertaken by AAM Pty Ltd on behalf of the Queensland Government captured highly accurate elevation data using LiDAR technology. Available dataset formats (in 1 kilometre tiles) are: - Classified las (LiDAR Data Exchange Format where strikes are classified as ground, non-ground, vegetation or building) - 1 metre Digital Elevation Model (DEM) in ASCII xyz - 1 metre Digital Elevation Model (DEM) in ESRI ASCII grid - 0.25 metre contours in ESRI Shape
Product Type
dataset
eCat Id
75943
Contact for the resource
Custodian
Custodian
Lev 2, Landcentre, Cnr Main and Vulture GPO Box 2454
Woolloongabba
QLD
4001
Australia
Point of contact
Cnr Jerrabomberra Ave and Hindmarsh Dr GPO Box 378
Canberra
ACT
2601
Australia
Keywords
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- Airborne Digital Data
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- AU-QLD
- Australian and New Zealand Standard Research Classification (ANZSRC)
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- Surface Processes
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- Published_Internal
Publication Date
2012-01-01T00:00:00
Creation Date
Security Constraints
Legal Constraints
Special, MOU, etc.
Access - restricted
Use - license
Status
Purpose
Maintenance Information
unknown
Topic Category
elevation
Series Information
Lineage
LI_Lineage: ACQUISITION Airborne Laser Scanning (ALS) data was acquired from a fixed wing aircraft over the Town of Esk on the 3 January 2012, the Town of Kilcoy on the 28 December 2011, the Town of Lockyer Creek Gap on the 2 and the 3 January 2012 and the Town of Toogoolawah on 30 December 2011 and 1 January 2012. DATA PROCESSING Ground Support: GPS data was logged at all towns without incident. Ground check points acquired by LSA allowed an assessment of the accuracy of the ALS data and final adjustment to AHD. Classified Point Cloud: Laser strikes were classified into ground and non-ground points using a single algorithm across the project area. Manual checking and editing of the data classification further improved the quality of the terrain model. Vegetation: Vegetation points have been classified using an automatic algorithm tailored for the project area. No manual checking of Vegetation points has been undertaken. There may be instances of non-ground strikes being incorrectly classified as vegetation and conversely vegetation strikes remaining classified as non-ground. Buildings: Building points have been classified using an automatic algorithm tailored for the project area. No manual checking of building points has been undertaken. There may be instances of non-ground strikes being incorrectly classified as buildings and conversely building strikes remaining classified as nonground. Non-ground: Non-ground points have been filtered by removing points within 0.1m of the ground surface to reduce incidence surface 'noise'. Points classified as nonground may include laser strikes on the surface of water bodies. DATA PRESENTATION The data has been supplied in accordance with a specification agreed with the primary client. The point density of the acquired data (>1pts/sqm) places limitations on the size of tiles into which the data can be divided and subsequently managed. The data is delivered in 1 km tiles to ensure file sizes and point counts per file are manageable.
Parent Information
Extents
[0.0, 0.0, 0.0, 0.0]
Reference System
GDA94 / MGA zone 56 (EPSG:28356)
Spatial Resolution
Service Information
Associations
Downloads and Links
Source Information
These datasets cover approximately 514 sq km over the Towns of Esk, Kilcoy and Toogoolawah and over Lockyer Creek Gap in the Somerset Regional Council and are part of the 2011 Inland Towns Stage 3 LiDAR capture project. This section of the project, undertaken by AAM Pty Ltd on behalf of the Queensland Government captured highly accurate elevation data using LiDAR technology. Available dataset formats (in 1 kilometre tiles) are: - Classified las (LiDAR Data Exchange Format where strikes are classified as ground, non-ground, vegetation or building) - 1 metre Digital Elevation Model (DEM) in ASCII xyz - 1 metre Digital Elevation Model (DEM) in ESRI ASCII grid - 0.25 metre contours in ESRI Shape