Melbourne 3D Photomesh With 2cm Ground Sample Distance

A 3D textured mesh representing all physical features like buildings, trees, and terrain across the City of Melbourne municipality. The data was captured in May 2020 with a 2cm ground sample distance and estimated spatial accuracies of 0.05m (X), 0.6m (Y), and 0.04m (Z). It is provided in ESRI SLPK and Wavefront OBJ formats with accompanying material and texture files.

Use Cases

• Generate realistic 3D visualizations and fly-throughs of urban terrain using the textured mesh and material files.
• Perform urban planning analysis by measuring building volumes and vegetation coverage from the 3D mesh features.
• Create digital elevation models (DEMs) and slope analyses from the terrain data within the mesh.
• Simulate environmental impacts like shadow casting or wind flow using the detailed 3D geometry of buildings and trees.

Strengths

• High-resolution capture with a 2cm ground sample distance.
• Provides estimated spatial accuracies of 0.05m (X), 0.6m (Y), and 0.04m (Z).
• Covers the entire City of Melbourne municipality, split into geospatially located tiles.
• Available in two standard 3D formats: ESRI Scene Layer Package (SLPK) and Wavefront OBJ.

Limitations

• Data is from a single capture date (May 2020) and may not reflect current city conditions.
• The disclaimer notes there may be errors, omissions, or periods of data unavailability.
• Usage requires specialized 3D GIS or modeling software to handle SLPK or OBJ/MTL/JPG file sets.

Provenance

Source

City of Melbourne Open Data

Collection Method

Aerial or terrestrial photogrammetric capture to create a 3D textured mesh.

Time Range

May 2020

Freshness

null

Geography

City of Melbourne municipality, Australia (MGA Zone 55 projection, AHD vertical datum).