Photogrammetry & Surveying
The ability to accurately analyze evidence related to an accident or product failure is imperative to the successful outcome of the analysis. Veritech uses state-of-the-art methods in order to gather all information necessary to perform an accident reconstruction. After an accident, evidence remains in two locations: within the vicinity of the accident site and upon the involved vehicles or machinery. Evidence inspections performed by forensic engineers usually occur after responding emergency personnel have left and law enforcement have completed their investigation.
Forensic Engineering Services
Photogrammetry and Videogrammetry in Forensic Engineering
Photogrammetry is the scientific process of extracting precise measurements and data from photographs or digital images. By converting two-dimensional photographs into accurate three-dimensional models, photogrammetry allows forensic engineers and accident reconstructionists to gain a deeper understanding of events captured in images or video. This technology has transformed evidence collection, measurement, and 3D modeling in accident reconstruction and forensic engineering.
While photogrammetry has existed for decades, recent advances in software and imaging technology have made it more accessible and effective. At Veritech Consulting Engineering, our engineers use state-of-the-art photogrammetry techniques to enhance accident reconstruction and forensic investigations. Our expertise in this area provides a competitive advantage in the industry.
Photogrammetry in Accident Reconstruction
Photogrammetry allows analysts to extract meaningful data even when the only record of an incident is a set of photographs. For example, photos captured by a witness or participant in a car accident may show vehicle positions, tire marks, or other scene evidence. At first glance, these images may seem limited, but photogrammetric analysis can generate measurements, 3D models, and spatial data that are critical for understanding the dynamics of a crash. Veritech has successfully conducted accident reconstructions based entirely on photographic evidence.
Videogrammetry: Extracting Data from Video
The rise of dashboard cameras and vehicle-mounted video systems has introduced a new concept of photogrammetry, known as videogrammetry. By analyzing sequences of video frames, forensic engineers can:
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Determine the speed and trajectory of vehicles
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Assess vehicle movements from dash-mounted cameras
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Reconstruct accidents with time-sequenced visual data
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Accurately determine the positioning of vehicles before, during, and after an accident
Videogrammetry allows for scientifically backed accident reconstruction using video evidence from passenger vehicles, commercial trucks, trains, and construction equipment. Veritech is an industry leader in applying videogrammetry for forensic analysis and expert opinions.
Limitations of Photogrammetry
While photogrammetry is a powerful tool, its effectiveness depends on the quality and angles of photographs or video frames. Limitations include:
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Insufficient angles or coverage of the subject
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Distorted or low-resolution images
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Environmental factors affecting visual clarity
Veritech engineers can assess whether available photographs or video are suitable for photogrammetric analysis and ensure accurate data extraction.
Site Inspections Using Photogrammetry
Accident scene documentation often involves capturing:
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Tire marks and road gouges
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Debris from collisions
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Terrain features and obstacles
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Visibility, lighting, and weather conditions
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Traffic surveys and control device analysis
By combining photogrammetry with site inspections, Veritech's engineers are adept at creating accurate 3D representations of accident locations.
Vehicle Inspections and Measurements
Vehicle inspections complement site surveys by documenting:
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Post-accident vehicle condition
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Vehicle “black box” data downloads
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Safety system functionality (airbags, seatbelts, roll cages)
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Vehicle crush and structural deformation
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Brake system performance
Timely inspections are critical, as accident scene conditions can change due to environmental or external factors.
Forensic Site Surveying with Drone Technology
Veritech's drone technology is unmatched in the forensic engineering industry. We utilize Unmanned Aerial Vehicles (UAVs) for aerial photogrammetry, video capture, and 3D surveying.
Drone technology allows for:
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Accurate three-dimensional point cloud generation
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Surveying of large vehicles, semi trucks, trains, and construction equipment
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Safe and efficient accident site documentation
Traditional Surveying Tools
Traditional surveying tools, such as 3D scanners and total stations, can be used for site and vehicle inspections. However, while these tools are accurate, the process of obtaining relevant data is extremely time consuming, costly, and the tools themselves require advanced training. As technology progresses, it is becoming evident that faster data collection procedures such as UAV and photogrammetric point cloud generation have become the new way forward for forensic engineering and accident reconstruction.
Why Choose Veritech for Photogrammetry and Accident Reconstruction
Veritech combines advanced photogrammetry, videogrammetry, UAV surveys, and traditional 3D scanning to provide comprehensive accident reconstruction services. Our engineers ensure accurate, efficient, and scientifically defensible measurements for both vehicle inspections and accident site analysis, helping legal teams, insurance investigators, and regulatory agencies make informed decisions.