BlomORTHO™


The BlomORTHO™ archive is a collection of orthogonal vertical image mosaics. Blom is able to offer seamless images of over a thousand areas at resolutions of 10 – 15cm per pixel, in select areas a resolution as high as 4 cm per pixel can been achieved.

The vertical aerial imagery dates from 2005 and is continuously updated on a regular basis; the mosaic product is produced from Nadir vertical imagery that has been geometrically corrected to represent its true ground position. The imagery is then separated into georeferenced tiles, normally 1km² in size. BlomORTHO™ can be delivered offline in georefenced tiles or can be accessed online via the BlomURBEX™ service.

Traditional aerial imagery has been used in many different sectors for a long time. Its continuing popularity shows that it has a true return of investment and is a proven economical solution to reduce site visits. There is a vast range of sectors currently using our BlomORTHO™ product, such as web directories using the ortho as an aerial overview, government using the imagery as part of their GIS databases and planning official’s using the data for visualisations during meetings and planning reports.

The BlomORTHO™ product has a range of sub-products dependant on country and resolution; please see the list below for more information.

Applications

  • Internet search directories
  • Planning reports
  • Part of a mobile solution for Emergency services
  • Visualisations / Illustrations
  • Integration into corporate GIS intranet applications
  • Geographical overviews in the media
  • Archaeology mapping
  • Asset management
  • Environment management
  • Land use verification
  • Infrastructure planning

Deliverables

  • Online - WGS84 Spherical Mercator (EPSG:3785)
  • Offline – jpg (Local coordinate systems or WGS84)
  • Offline – .tiff (Local coordinate systems or WGS84)
  • Offline – .ECW (Local coordinate systems or WGS84)


BlomORTHO™ sub-products


TerraItaly™

TerraItaly™ is Blom’s national ortho product for Italy; currently full national coverage is available in a resolution of 50 cm GSD. The product has a XY accuracy of 3m and capture dates from 2007 but is continually being updated.

Deliverables

  • 6,750m x 5,550m tiles
  • Offline – .ECW (Gauss-Boaga or UTM32/33)
  • Offline – .tiff (Gauss-Boaga or UTM32/33)


TerraDenmark™

TerraDenmark™ is Blom’s national ortho product for Denmark; currently full national coverage is available in a resolution of 20 cm GSD. The product has a XY accuracy of 60cm and capture dates from 2008.

Deliverables

  • 1km² tiles
  • Offline – .ECW (DKI or UTM32/Euref89)
  • Offline – .tiff (DKI or UTM32/Euref89)


TerraNetherlands™

TerraNetherlands™ is Blom’s national ortho product for the Netherlands; currently full national coverage is available in a resolution of 10 cm GSD. The product has a XY accuracy of 30cm and capture dates from 2008.

Deliverables

  • 1,000m X 500m  tiles
  • Offline – .tiff (RDNAP)

 

Blom’s 4cm of London

Blom’s 4cm of London is Blom’s ortho product for central London; currently 543 km² is available in a resolution of 4 cm GSD. The product has a XY accuracy of 30cm and capture dates from 2007.

Deliverables

  • 250m X 250m  tiles
  • Offline – .tiff (OSGB)
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