X Y Z Mapping of Cities by AccuCities
Our production team is highly skilled and take great pride in capturing highest quality 3D city models. Every point and every line in our 3D city models is manually captured captured using stereo photogrammetry. We call this process X Y Z Mapping.
Photogrammetry is the science of making measurements from photographs, especially for recovering the exact positions of surface points. We use stereo photogrammetry using latest high-resolution aerial imagery to capture our 3D Models. To explain complicated process in very few words, as survey plane flies over a city area, it takes series of photographs which overlap by 60%. With each photograph its GPS position, height, tilt, pitch and roll are recorded. Using this data + camera calibration data (to eliminate lens distortion effects), the imagery is triangulated to its correct real-world coordinates.
Once the source aerial imagery is triangulated we can finally start with the capture process. In areas where two images overlap, we project one image into one eye, the second image into another eye and and this way we are able to see the Z value (depth).
Custom 3D Models – Available UK Wide
Use our Quoting Tool to send us z map mark-up. 0.1 km2 (330 x 330 meters) 3D Model now only £500 + VAT. Available anywhere in the United Kingdom.
Average Custom 3D Model delivery time: 6 days.
25 km sq Base 3D Model of London
Manually captured from 2016 imagery, this 3D Model covers 25 km2. Light, Detailed & Accurate to 200 cm, the model is easy to work with and fantastic value at less than £200 / km sq. Delivered as .DWG, .SKP or .FBX files.
High Detail 3D London Subscription
Subscribers get direct access to 3D Model covering 50+ km2 of central London. Accurate to 15cm, dataset is always updated from latest aerial imagery. Company-wide licence from £1,000 + VAT / month.
Latest Source Aerial Imagery
The High Detail 3D Model is manually captured using stereo photogrammetry. The source photography and its associated data is from the latest high-res 12.5cm GSD imagery collected in September 2016. This gives the user the confidence that the most recent additions to the London skyline are included in the 3D model.
Accurately Captured Buildings
Level 3 Model buildings are accurate to 15cm in all axis. Using aerial stereo photogrammetry, all roofs features and structures are precisely manually captured with correct shapes and slopes. Vertical walls of buildings in our Level 3 3D models are made as downwards extensions of roof structures. If facade detail is required, customers can purchase Level 4 models with 20% discount.
Accurately Captured Terrain
The terrain in the Level 3 3D Model of London is not flat. It is manually captured using the same manual photogrammetry method as buildings and is accurate to 20cm in all axis at curb level.
Terrain is separated into land use categories such as roads, man-made surfaces, greenspaces and water body.
3D data structured in Layers
3D Models of London in Level 3 are structured in Layers. Level 3 Buildings are on one layer, terrain model is separated in layers such as Roads, Man-made surfaces, Greenspaces and Water body, but also Bridges, Embankment Walls and River Structures. Last layer in this dataset is the Trees layer.
Future Skyline Layer Included with London Models
Future Skyline Layer is a product available to our Wide Area 3D Model of London subscribers. We collect information from planning portals and turn submitted drawings into a massing 3D Model which best represents planned development. Now also included with qualifying Level 3 Tiles orders.
Future Skyline Layer is available for Nine Elms / Battersea, Southbank, Blackfriers, City of London and Canary Wharf.
Variety of File formats
Level 3 3D models are delivered in AutoCad Solid DWG, SketchUp SKP and Filmbox FBX formats for easy editing that suits most workflows. The 3D Model is easy to import into Revit, 3D Studio Max, Maya or Cinema 4D.
Company-wide Multi-use Licence
We put as few restrictions on how you can use our 3D models as possible. Our End User Licence Agreement is easy to understand and allows anybody in your company to use the data over and over again for 5 full years.