North East CMA - LiDAR

dataset
Dataset: North East CMA - LiDAR Assembly: Single
 
Citation proposal Citation proposal

North East CMA - LiDAR

Department of Transport and Planning

Description

Title
North East CMA - LiDAR 
Resource Type
Dataset 
 
 

Spatial

Spatial representation type
Point Cloud 
Horizontal Accuracy
0.3m 
Code
MGA Zone 55 GDA2020 
 
 

Format

Title
LAS 1.4 
 
 

Contacts

  Point of contact

  Custodian

 
 

Keywords

Topic category
  • Elevation
 
 

Resource constraints

Use limitation
General 
Classification
Unclassified 
 
 

Lineage

Description
The LiDAR Point Cloud is classified into Ground and Non-Ground classes. The data has been classified to ICSM Classification Level 2 (Ground Surface Improvement) for areas within the River AOI (river centerline buffered by 200m). Areas outside the River AOI are classified to ICSM Classification Level 1 (Automated Classification) and include no manual editing or classification improvement. The point cloud outside the River AOI may contain errors and anomalies in the ground and above ground classes that have not been corrected. Anomalies in the ground class will be translated into the DTM product. Proprietary ground classification routines in TerraScan are used to remove any non-ground points and generate an accurate ground surface. Once the ground surface is generated, a manual quality control routine is carried out using aerial imagery, hill shades, cross-sections, and profiles within the TerraSolid software suite to classify the above ground points. The vegetation is auto-classified using the height from ground method. A QA review and supervisor manual inspection is completed on a percentage of the classified tiles within the River AOI. 
 
 

Metadata Constraints Metadata Constraints

Classification
Unclassified 
 
 

Quality

Attribute Quality
Positional Accuracy
Conceptual Consistency
Comments
Consistent with specification which includes that point cloud classification outside the AOI is not manually edited from automatic classification results. The LIDAR point cloud has been colourised with the concurrent imagery. 
 
Missing Data
Comments
Complete for river AOIs within North East CMA. 
 
Excess Data
 
 


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