Ordnance Survey MasterMap Imagery Layer Added
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Ordnance Survey MasterMap Imagery Layer Added

Getmapping, UK, has added the OS MasterMap Imagery Layer by Ordnance Survey to its data offering. OS MasterMap Imagery Layer comprises aerial images which have been edge-matched together to create seamless coverage of Great Britain. The images have been orthorectified so that features in the other OS MasterMap layers align well with their counterparts in the Imagery Layer. The images have been captured under specific conditions to minimise the effects of shadow and cloud.

Every image is colour-balanced together with adjacent images and carefully edge-matched to minimise any differences caused by variations in atmospheric conditions at time of capture. Rigorous quality checks ensure that the layer maintains a consistent standard of both positional accuracy and image quality.

Ordnance Survey’s aerial imagery is complemented by the 250 surveyors it deploys on the ground. This helps Ordnance Survey to make more than 5,000 updates to its maps every day. OS MasterMap is one of the most up-to-date mapping products available.

Dave Horner, managing director of Getmapping, recognises that for the professional user the data provides a high level of detail but in some areas the OS MasterMap Imagery Layer may be more recent and may provide the best choice, data currency being critical to many clients. For those wishing to use a WMS feed, Getmapping offers a fully maintained and updated data stream for all its imagery products so customers can be certain that they have access to the most up data.

Customers can order offline, select and download image files via the webshop or stream the imagery direct to their CAD or GIS applications via WMS. 

Image: Southampton centred on the St Mary's Football Stadium, demonstrating the close match between the Imagery Layer and the underlying Topography Layer (© Crown copyright, All rights reserved. 2012 License number 0100030835).



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