GISuser.com GIS Location Technology - Getmapping works with Harvey Maps

Hartley Wintney, UK, November 27th 2012 - Getmapping aerial photography is being used to help create and update Harvey Maps, which are enthusiastically endorsed by mountaineers, walkers, cyclists and orienteers. Getmapping also provides a WMS feed of its latest UK aerial photography to enable Harvey Maps to detect change so that its maps can be kept up to date.

Getmapping captures aerial photography with a range of high resolution large format digital cameras. The cameras capture frames with a large degree of vertical overlap so that images can be orthorectified to correct the distortions due to topographic relief, or camera orientation during flight. Image resolution varies according to requirements. Most urban imagery is captured with each pixel equivalent to 12.5cm ground sampled distance (GSD). Rural and mountain areas are generally captured at 25cm GSD.

Harvey Maps has always prided itself on the fact that its walking and other recreational maps are made using sound map making techniques and then checked by a team of experienced field surveyors who are themselves enthusiastic walkers. As a result Harvey Maps are renowned for their accuracy, clarity and practicality with many available in tough waterproof polyethylene. Many of these maps are now available in digital format, for example on an SD card for use with the Satmap Active 10 GPS receiver.

�We get stereo imagery from Getmapping which is then fed in to our photogrammetric process,� said Robin Harvey, co-founder of Harvey Maps. �Use of this imagery produces a virtual model of the ground from which we then create a base map. The data is very accurate and enables us to record all the features, create spot heights and contours, which help describe the shape of the landscape on a two dimensional map. The WMS feed provides us with online access to all of Getmapping�s most up to date imagery. This is very useful for detecting change so we can update our maps or get new features field checked by our surveyors,� continued Harvey.

�Harvey Maps have been justly acclaimed by outdoor enthusiasts for their accuracy and clarity and we are delighted that our data is being used as an important part of their map creation process,� said Dave Horner, Managing Director of Getmapping.�

About Getmapping Plc

Getmapping Plc is a leading provider of aerial photography, digital mapping and web based services. With offices in Hartley Wintney, Hampshire and Cape Town, South Africa, Getmapping was the first company to have up to date nationwide coverage of Britain and pioneered online delivery of aerial photography to business and the public at large. A reseller of professional mapping, oblique photography, height data, OS maps and third party aerial photography, Getmapping services a wide variety of markets including press and media, local authorities, property and construction, environmental consultants and the public. It also provides a number of value added mapping products and services tailored to specific client needs including data hosting, online data delivery and web-based GIS. A pioneer of many online products through its website, Getmapping is the only company currently re-flying the whole of the UK at enhanced 12.5cm resolution.