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Photogrammetry 2017-11-17T02:59:35+00:00

We capture, analyse and interpret aerial imagery.

Bennett + Bennett offer a complete range of in-house photogrammetry services including aerial / terrestrial image acquisition, camera calibration, image and data processing, modelling and feature extraction. By controlling all processes and procedures we are able to maintain a consistently high level of service and customer satisfaction. We work across a wide variety of projects, but are specialists in major construction, infrastructure and major event mapping.

Photogrammetry is a technique of surveying which involves the measurement and interpretation of data from aerial photographs. Our team use a variety of aerial capture platforms and software to ensure you receive the best solution for your project requirements.

  • Low impact – minimal interference with ground operations, ideal for sensitive areas

  • Cost effective – capture large areas in a single visit

  • Rapid deployment – airborne team

  • Safer method – reduced risk to personnel & ability to reach inaccessible areas

  • Records features / levels  – ideal for rapid changing environments (mines, quarries, landfill, beach erosion)

Capture large areas in precision detail, enabling for effective planning and modelling.

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Aerial surveying is able to efficiently capture large areas in precision detail, enabling for effective planning and modelling. Service deliverables include digital terrain models (DTM), 3D point clouds and vector data extraction.

Applications include:

  • Large detail surveys (including corridor sections)
  • Construction & site development
  • Volumetric calculations – earthworks, stockpiles & landfill
  • Clash detection & hazard assessments
  • Engineering design – transport, infrastructure, construction
  • Disaster / environmental monitoring & reporting

DTM / DEM 

Digital terrain models (DTM) / digital elevation models (DEM) are a representation of ground surface topography or terrain and are produced from data captured by our photogrammetrists. Differing levels of accuracy are able to be produced depending on the clients’ requirements and budget.

Vector data extraction (2D / 3D)

CAD data can be processed from our aerial imagery such as kerbing, roads, fences and roof lines. For small area up to 25km² we can configure the data capture to produce the equivalent of a ground-based detail survey, or for areas over 25km² we generally work to a sub 100mm tolerance in data accuracy.

3D Point Clouds & Textured Meshes

Our Photogrammetry and Laser Scanning divisions can develop high quality 3D point clouds. Typically those captured by photogrammetry are perfectly suited for major projects where a large area has to be covered in high density and with efficiency and accuracy. Photogrammetry data can contain some noise, however it retains full colour definition and is able to be further processed into photo-realistic textural meshes, enabling for easier comprehension.

Orthorectified imagery (or orthophotos) have been processed to remove lens distortion, camera tilt and differences in elevation (topographic relief). They offer the same benefits as a map but with uniform scale and true geometry, allowing for the accurate measurement of features.

Applications include:

  • Construction & development site analysis
  • Asset management (agriculture / council)
  • Transport & traffic analysis (associated infrastructure / traffic flow patterns)
  • Disaster / environmental monitoring & reporting
  • Major event planning

We specialise in providing clients rapid and effective solutions for producing terrain models.

High accuracy close range terrestrial imaging allows for very fine detail to be captured for documentation, analysis and measurement. Examples include capturing and extracting high level detail of complex facades, mosaic features or surface finishes (including damage such as chipping or hairline cracks can be documented)

Services include:

  • As built structures (cannot be measured by traditional means or are located in hard-to-access areas)
  • Building façades & elevations
  • 3D wireframes
  • Reverse engineering
  • Dilapidation surveys & building documentation

Additional Services – Surveying  |  Town Planning  |  Laser Scanning