MetaShare PROD
Yea - LiDAR
dataset
Dataset: Yea - LiDAR
Assembly: Single
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Citation proposal Citation proposal
Yea - LiDAR Department of Transport and Planning https://metashare.maps.vic.gov.au/geonetwork/srv/eng/catalog.search#/metadata/3f55f606-b4aa-52c9-985f-bb6e1248751a |
- Description
- Temporal
- Spatial
- Maintenance
- Format
- Contacts
- Keywords
- Resource Constraints
- Lineage
- Metadata Constraints
- Quality
Description
- Title
- Yea - LiDAR
- Resource Type
- Dataset
Temporal
Spatial
- Spatial representation type
- Point Cloud
- Horizontal Accuracy
- 0.2m
- Code
- MGA Zone 55 GDA94
Maintenance
Format
- Title
- LAS 1.2 - Class(Model Key Points, Non-Ground)
Contacts
Point of contact
Department of Transport and Planning
-
Coordinated Imagery Program
PO Box 500
East Melbourne
Victoria
3002
Australia
Keywords
- Topic category
-
- Elevation
Resource Constraints
- Use limitation
- General
- Classification
- Unclassified
Lineage
- Description
- Laser strikes were classified into ground and non-ground points using a single algorithm across the project area. Further classification by algorithm was undertaken to distinguish above ground features, such as buildings and vegetation. Manual checking and editing of the data classification was compared against available imagery to further improved the quality of the classification and terrain model. The LAS file point classifications levels are formatted to comply with ICSM Standard LiDAR Point Classes. GPS base station support was provided by GPSnet CORS base stations. Ground check points allowed an assessment of the accuracy of the ALS data.
Metadata Constraints
- Classification
- Unclassified
Quality
Attribute Quality
Positional Accuracy
Conceptual Consistency
- Comments
- The definition of the ground may be less accurate in isolated pockets of dissimilar terrain/vegetation combinations. Accuracy of the ground surface under dense canopy may be reduced. Laser accuracy at swath edges may be reduced. Ground definition in vegetated terrain may contain localized areas with systematic errors or outliers which fall outside this accuracy estimate. Gaps may occur due to diminished returns over water and materials with low laser reflectivity, such as black composite roofing.
Missing Data
- Comments
- The data is consistent with respect to the visual representation of ground and non-ground features, continuity at the tile boundaries and representation of elevation values.
Excess Data
Overviews
Provided by
Views Views
3f55f606-b4aa-52c9-985f-bb6e1248751a
Access to the portal Access to the portal
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Associated resources
Not available