Introduction
Photogrammetry is the science and practice of obtaining reliable measurements, spatial information, and three-dimensional data from photographs, video imagery, and other remotely captured images. It combines principles of surveying, geometry, mathematics, engineering, and geospatial science to accurately determine the size, shape, position, and characteristics of objects, structures, landscapes, and events.
Photogrammetry is widely used across a range of disciplines, including construction, engineering, mining, architecture, surveying, transportation, environmental management, and forensic investigations. Modern photogrammetric techniques utilise aerial photography, drone imagery, satellite imagery, laser scanning integration, and advanced computer software to generate precise measurements, maps, orthophotos, digital terrain models, and three-dimensional reconstructions.
A practitioner in photogrammetry applies specialised knowledge to analyse imagery and extract accurate spatial data for purposes such as site surveys, infrastructure monitoring, volume calculations, deformation analysis, accident reconstruction, building and asset documentation, and change detection over time. The field requires an understanding of camera calibration, image orientation, coordinate systems, measurement uncertainty, data processing methodologies, and quality assurance principles to ensure the reliability of results.
Photogrammetry also plays an important role in the investigation and analysis of incidents and disputes. Specialists may be engaged to interpret photographic and video evidence, reconstruct scenes, determine dimensions and distances, assess visibility and line-of-sight issues, or evaluate the movement and position of objects or individuals. These analyses often assist in understanding factual circumstances where direct measurements are unavailable or impractical.
At the bottom of this profile are brief details of a number of the experts that Expert Experts represents. Call our office to discuss your requirements and to obtain a recommendation that suits your needs and budget.
Expertise in Action
Photogrammetry experts may provide independent advice and expert witness services in legal proceedings, including litigation, arbitration, coronial investigations, and tribunal matters. In this capacity, they prepare expert reports, analyse photographic and video evidence, undertake spatial reconstructions, and provide objective opinions based on accepted scientific methodologies and available evidence. Their work may assist courts and tribunals in understanding technical issues relating to measurements, locations, perspectives, timing, and scene reconstruction.
As expert witnesses, photogrammetry practitioners have an overriding duty to provide impartial and independent opinions to the court or tribunal. Their conclusions must be supported by sound methodology, transparent analysis, and clearly documented assumptions. Through the application of scientific measurement techniques and rigorous analysis, photogrammetry provides reliable evidence to support decision-making in engineering, commercial, regulatory, and legal contexts.
Sample Reports
For some fields of expertise we have some sample sections of de-identified reports. Please contact our office if you are interested in a sample.
Cost
The overall cost of expert opinion depends on the services required. Some of the key factors that affect the cost of advice include:
- The need for a view or inspection of a location
- The quantity of documentary material to be reviewed
- Whether there are reports of other experts to be reviewed and commented on in detail
- Whether there is a need for conferences with the expert either in person or by telephone/Skype