NRSC UK Orthoview: Digital Orthrectified Aerial Imagery

This data results from the NRSC's ongoing 1:25000 UK Aerial Photography
Programme; a project designed to maintain an up to date aerial coverage of
the United Kingdom, covering the complete area at least every 5 years.

The Orthoview product has been generated from vertical aerial photographs.
The photographs have been orthorectified (to correct for distortion
towards their edges) then mosaiced to provide a seamless dataset for the
UK at a 0.5 metre resolution. This allows imagery for any area of interest
to be generated without issues associated with scenes falling across
multiple photographs.

In addition to its prime application in photogrammetric mapping (from
updating and contouring existing maps to preparing large scale engineering
plans), the data is used for environmental studies, general planning, land
use and land capability, soils, pollution, forestry, mining and quarrying,
housing and leisure development, agriculture, geology, water, transport
and civil engineering, boundary disputes, public enquiries, etc.

The data is stored in digital form and can be supplied on either Exabyte,
CD-ROM or CCT. Various hard copy forms can also be generated, including
posters and photographic positives/negatives. Price lists and further
information are available from the National Remote Sensing Centre (NRSC).

Note: All photography is flown to RICS Specification for Aerial
Photography Issue III, see references.