Rundle Street point cloud
Point cloud derived from vehicle based structure from motion platform. 5 Calibrated cameras mounted on our survey vehicle, point cloud generation routine a bit tightened up compared to those used for purely unstructured collection of photos.
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From the size of a mountain to the size of a 50 cents coin
Since the launch of the first Earth observation satellite in 1959, the world has witnessed incredible developments in terms of platform and sensors to observe the Earth. It is now possible to see virtually any part of our planet and distinguish objects the size of a mountain up to the size of a coin.
NSW and Victoria floods March 2012 latest satellite imagery
The South-East of Australia has once more become a victim of devastating floods that have forced many residents to evacuate their homes. Regional townships in Victoria and New South Wales have been hit the most.
The following satellite images
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High Resolution Digital Aerial Imagery vs High Resolution Satellite Imagery – Part 2
(Click here to go to the article “High Resolution Digital Aerial Imagery vs High Resolution Satellite Imagery – Part 1“)
(click images to enlarge)
Location accessibility:
Aerial Imagery:
The reach of an aerial acquisition company is usually restricted to a specific area or country due to the fact that aircraft are based in a specific location. Remote survey … Read the rest
High Resolution Digital Aerial Imagery vs High Resolution Satellite Imagery – Part 1
The gap between these two usually complementary mapping technologies is getting smaller as both satellite and aerial imaging systems have benefited from great technology improvements in the last decade. These technologies can even overlap in terms of resolution, meaning that issues such as accuracy, acquisition and processing time need to be taken into account . It is more of a … Read the rest
Beware of imitators – Common issues present in low-quality orthophotos
It may seem churlish to have a go at the competition, but we have become increasingly concerned at the quality and utility of products being offered by the second-tier and lower contractors appearing in the aerial photography market. In a market where pricing is a sensitive issue, some of these companies are delivering cheap imitations. Agencies who commission these services … Read the rest
UltraCam Eagle: the latest baby of the Microsoft UltraCam family
Being a long time user of the UltraCam camera series, it is no wonder that we got extremely excited when we heard last May 2011 about the launch of the latest baby of the Microsoft UltraCam family: the UltraCam Eagle.
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Digital Elevation, Digital Terrain or Digital Surface Model?
A Digital Elevation Model (DEM) is generally a file containing elevation values representing the terrain height over a specific area of the earth. A DEM can be a raster file: in this case each record is a 3-dimensional element usually associated with geographic coordinates at a fixed grid interval. The denser the grid, the more information the digital elevation model … Read the rest
What is the difference between aerial photography, aerial survey, aerial mapping, aerial photogrammetry and aerial acquisition?
It can be a bit confusing for a non-specialist to understand the subtle difference between the various technical terms used to describe the acquisition of photographs from an airborne platform. Let’s take a look at the most common terms used in the industry:
Aerial photography: Aerial photography is the action of taking photographs from an airborne platform such as aircraft… Read the rest
