Nearmap 3D & DSM content offers wide-scale, photo-realistic 3D models and elevation datasets for infrastructure projects across Australia and North America.

This page provides accuracy specifications and more for each 3D content type:

Coverage

Use our interactive coverage map to see if we currently cover your locations of interest.

https://www.nearmap.com/au/en/current-aerial-maps-coverage#/coverage-checker (this URL will resolve to your region's content).

Using 3D in MapBrowser



Textured Mesh


Accuracy


Textured MeshNotes

3D Mesh Geometric Resolution

~ 6" or ~15 cm


Approximate distance between mesh vertices in high detail areas.

3D Mesh Texture/Imagery Resolution 2.2-3" or 5.6-7.6 cm  Range given since some parts are textured with oblique imagery. 
Absolute Horizontal Accuracy

11" or 28 cm RMSEr


Absolute Vertical Accuracy

14.9" or 37.8 cm RMSEz


Horizontal Datum / Projection

SLPK exports: WGS84/UTM
Cesium exports: ECEF
All other formats:

  • WGS84/UTM
  • GDA94/MGA - AU
  • GDA2020/MGA- AU
  • NAD83/UTM - US/CA
  • NAD83/SPCS- US/CA

Vertical Datum / Projection

SLPK exports: EGM96
Cesium: ECEF
All other formats:

  • AHD (AusGeoid09) - AU
  • NAVD88 - US/CA
  • EGM2008 - US/CA
  • CGVD2013 - US/CA

Image BandsRGB Natural Color

Cesium is the format you view in MapBrowser.


Export File Contents

  • SLPK
  • Cesium 3D Tiles
  • OSGB
  • OBJ 
  • FBX

Refer to:  Textured Mesh File Contents

Delivery Methods

Viewing 3D Textured Mesh in Third-Party Applications

You can view Nearmap 3D Textured Mesh content in several third-party applications. Refer to:

Textured mesh content in third-party applications

Product Constraints

3D reconstruction is determined by the ability to reliably resolve objects from at least two different viewing angles.

Objects hidden or occluded would not be reconstructed reliably, as well as: 

  • Ambiguous features, such as reflective surfaces, featureless surfaces, thin features, and complex features such as trees
  • Objects that are less than 40cm in size 
  • Objects that are beneath another object, or semi-obstructed




DSM (Digital Surface Model)


Accuracy


DSMNotes

Ground Sampling Distance (GSD) for DSM export

6" or 15 cm


Absolute Horizontal Accuracy

11" or 28 cm RMSEr


Absolute Vertical Accuracy

14.9" or 37.8 cm RMSEz


Horizontal Datum / Projection
  • WGS84/UTM
  • GDA94/MGA - AU
  • GDA2020/MGA- AU
  • NAD83/UTM - US/CA
  • NAD83/SPCS- US/CA


Vertical Datum / Projection
  • AHD (AusGeoid09) - AU
  • NAVD88 - US/CA
  • EGM2008 - US/CA
  • CGVD2013 - US/CA

Image BandsOne bandUsed for elevation


Export File Contents

  • GeoTIFF
  • ASCII

Refer to: DSM File Contents

Delivery Methods

Viewing DSM in Third-Party Applications

You can view Nearmap 3D DSM content in several third-party applications. Refer to:

DSM in third-party applications

Product Constraints

3D reconstruction is determined by the ability to reliably resolve objects from at least two different viewing angles.

Objects hidden or occluded would not be reconstructed reliably, as well as: 

  • Ambiguous features, such as reflective surfaces, featureless surfaces, thin features, and complex features such as trees
  • Objects that are less than 40cm in size 
  • Objects that are beneath another object, or semi-obtruded




Point Cloud


Accuracy


Point CloudNotes

Ground Sampling Distance (GSD)

~6" or ~15 cm Approximate distance due to irregular spacing between points
Absolute Horizontal Accuracy

11" or 28 cm RMSEr


Absolute Vertical Accuracy

14.9" or 37.8 cm RMSEz 


Horizontal Datum / Projection


  • WGS84/UTM
  • GDA94/MGA - AU
  • GDA2020/MGA- AU
  • NAD83/UTM - US/CA
  • NAD83/SPCS- US/CA


Vertical Datum / Projection
  • AHD (AusGeoid09) - AU
  • NAVD88 - US/CA
  • EGM2008 - US/CA
  • CGVD2013 - US/CA

Image BandsRGB Natural Color
File FormatsLAS
Delivery Methods


Export File Contents

  • LAS

Refer to: Point Cloud File Contents

Delivery Methods

Viewing 3D Point Cloud in Third-Party Applications

You can view Nearmap 3D Point Cloud content in several third-party applications. Refer to:

Point Cloud in third-party applications

Product Constraints

3D reconstruction is determined by the ability to reliably resolve objects from at least two different viewing angles.

  • Objects hidden or occluded would not be reconstructed reliably.
  • Typical sensible point spacing would be around 15 cm (i.e. consistent with our 3D resolution), however larger or smaller spacing can be supported.
  • The point cloud will not contain any extra information than the textured mesh; if we cannot resolve in the mesh, the point cloud will also be the same.
  • Point cloud will likely be significantly larger in file size than the 3D mesh. Specialized software can optimize the storage of point cloud to make it perform better
  • The point cloud is unclassified in the sense that points are not labelled as ground, tree, building, etc. as is often done for Lidar point clouds. 




TrueOrtho


Accuracy


True OrthoNotes

Ground Sampling Distance (GSD) for TrueOrtho export

2" or 5 cm
Absolute Horizontal Accuracy

11" or 28 cm RMSEr


Absolute Vertical Accuracy

14.9" or 37.8 cm RMSEz 


Horizontal Datum / Projection
  • WGS84/UTM
  • GDA94/MGA - AU
  • GDA2020/MGA- AU
  • NAD83/UTM - US/CA
  • NAD83/SPCS- US/CA


Image BandsRGB Natural Color


Export File Contents

  • GeoTIFF
  • JPEG
  • ASCII

Refer to: TrueOrtho File Contents

Delivery Methods

Viewing True Ortho in Third-Party Applications

You can view Nearmap 3D DSM content in several third-party applications. Refer to:

TrueOrtho in third-party applications

Product Constraints

The Nearmap True Ortho product is derived from the Nearmap 3D reconstruction and could be considered a flattened textured mesh. Objects poorly reconstructed in 3D will also lack high resolution in the True Ortho product.

Although Nearmap's True Ortho is an image similar in appearance to the regular vertical (ortho) product, it has a 5cm pixel size and is lower in resolution than the standard product.




DEM/DTM (Digital Elevation Model/Digital Terrain Model)


Accuracy


True OrthoNotes

Resolution

1 ft / 2 ft / 3 ft
30 cm / 60 cm / 90 cm

Absolute Horizontal Accuracy

11" or 28 cm RMSEr


Absolute Vertical Accuracy

14.9" or 37.8 cm RMSEz 

Valid for bare earth areas. 

Vertical Datum / Projection
  • WGS84/UTM
  • GDA94/MGA - AU
  • GDA2020/MGA- AU
  • NAD83/UTM - US/CA
  • NAD83/SPCS- US/CA


Vertical Datum / Projection
  • AHD (AusGeoid09) - AU
  • NAVD88 - US/CA
  • EGM2008 - US/CA
  • CGVD2013 - US/CA

Image BandsRGB Natural Color


Export File Contents

  • GeoTIFF

Refer to: DTM File Contents

Delivery Methods

Viewing DTM in Third-Party Applications

This is a new content offering. Watch this space for guidance on consuming this content type in third-party applications.





FAQs


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