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Posts from the ‘Technical’ Category

23
Nov

Using metropolitan scale Digital Surface Models for wireless network coverage analysis

The slow propagation of the NBN and the constant demand for high bandwidth services such as Netflix, Stan etc. has created a niche for high bandwidth point to point links and wireless DSL providers. Here are some of their taglines:

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14
Sep

Geospatial and  photogrammetry: When the mapping world and the gaming world collide

The gaming and the mapping world might look like two very distinct industries but when we give a closer look, we can discern some similarities. Both industries are now more than ever benefiting from each other’s unique features. In one hand, interactive 3D GIS are now using improved graphics, atmospheric and particles effects to visualise real-world data as well as … Read the rest

4
Nov

Photogrammetric Modelling of Cars for pedestrian impact simulation

  The CASR Lab does extensive head-bonnet collision testing to assess new car models entering the market for safety.  The limit of deformation of the car’s hood is determined by the gap between the hood and the engine block. Measuring this gap requires extensive 3D modelling of both the hood and the engine block and experimentally testing the deformation at all … Read the rest

11
Aug

Systems for acquiring Oblique Aerial Imagery

Oblique imagery got thrust into the spotlight with Microsoft’s publication of the Bird’s Eye imagery to the public. Geo-referenced oblique images are useful for highly automatic creation of 3D city models on their own or in combination with airborne Lidar and planar topographic maps containing building outlines. With the advent of multi-ray matching algorithms using rotation invariant features such as … Read the rest

4
Apr

How on earth did MH370 end up in the southern Indian Ocean?

Among the myriad of questions surrounding the disappearance of Malaysian Airlines flight MH-370 the biggest question is:

How on earth did MH370 end up in the southern Indian Ocean?

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3
Jul

The Truth about True Orthos

In this article we discuss an innovative way to produce true-ortho imagery where all distortions are corrected and the visible ground surface is maximized.

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27
Jun

Photography 101

Check out this simple and concise visual breakdown of the basic in photography.

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22
Aug

Aerial Photogrammetry from UAVs

The general trend in all industries is automation, the aerial photogrammetry industry is no different. The advent of digital cameras and poweful computing platforms has automated the image processing workflows from the film camera days. The advent of electric powered aircraft and affordable, small autopilots has made the business of flying and capturing imagery automated as well. The industry has … Read the rest

9
Jul

Dense Matching – 3D Point clouds from aerial and street-level imagery

The UltraMap 3.0 Beta season is almost on us and it promises a great new development in mainstream air-borne photogrammetry. Pervasive availability of 3D point clouds with attached colour information, without requiring a separate

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30
Apr

Survey of Radar imaging technologies – Satellite Constellations

Visible light only forms a small slice of the electromagnetic spectrum centred at yellow – we have evolved to see things the way we do due to the solar peak radiation being somewhere near yellow.

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