Collision Reconstruction and Forensics

Painpoints

There is an increased risk for forensic personnel when performing manual reconstruction.
Traffic is significantly impacted by the long reconstruction times and delays in road clearing.
Inadequate data collection and a lack of realistic visual representation can add complexity to legal cases.

Advantages

Collect data from a safe distance without compromising data quality or exposing personnel to unnecessary risk.
Significantly reduce collection times, restoring normal traffic flow more quickly and minimizing the impact on transportation.
Capture realistic reconstruction models of the scene, which can be later used throughout the legal process.

Portable Scene Reconstruction

The Matrice 4E offers unparalleled portability for quick reconstruction missions. Easy to carry in patrol vehicles and equipped with a 20MP camera and RTK module, it’s an ideal solution for fast but accurate scene reconstruction. Paired with DJI Terra and DJI Modify, it can create realistic 3D models to serve as evidence or for forensic analysis.

Drone Platform

DJI Matrice 4E

Weight: 1219 g (with propellers)

Max Flight Time (without wind): 49 minutes

Environment Adaptability: Max takeoff altitude 6000 m, max wind speed resistance 12 m/s

Sensing System: Omnidirectional binocular vision system, supplemented with a 3D infrared sensor at the bottom of the aircraft

Mechanical Shutter Speed: 2-1/2000 s, minimum photo interval 0.5 s

Wide-Angle Camera: 4/3-inch CMOS, 20MP effective pixels

Medium Tele Camera: 1/1.3-inch CMOS, 48MP effective pixels

Telephoto Camera: 1/1.5-inch CMOS, 48MP effective pixels

Laser Rangefinding: 1800m measurement range (1 Hz) @20% reflectivity target

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Payload And Software

DJI Pilot 2

Ground control

DJI Terra

Modeling and flight mission plan

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DJI Modify

Intelligent 3D model editing software

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Workflow

Mission Planning:
- Plan Mapping Mission based on scene reconstruction needed.
Mission Execution:
- Plan Mapping Mission based on scene reconstruction needed.
- For night reconstructions, make sure to properly light the scene for accurate data collection.
Post Mission Documentation:
- Import collected data in DJI Terra to process the scene 3D model.
- Use DJI Modify to clean a version of the 3D model, remove any floating parts, and improve overall texture quality. Sharing with other stakeholders is also possible.

Large Scale Scene Reconstruction

The Matrice 400, equipped with the Zenmuse P1, allows law enforcement and forensic teams to map vast incident areas with great quality and accuracy. Process the collected data with DJI Terra and DJI Modify for optimal processing efficiency and modeling quality.