Training: 3D Crime Scene & Accident Reconstruction with RealityScan

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Forensic crime scene surveys and their results are important factual evidence and support investigating commissions, public prosecutors and courts in their work. By combining laser scanning (TLS) and photogrammetry (PGM) in RealityScan, crime scenes or traffic accidents can be digitally captured down to the smallest detail. The results can be used to map exact dimensions, to create sketches and site plans, to determine a shooting direction or a field of view or to make the “scene” virtually walkable (VR scene).

In addition to that, Gaussian Splats created with RealityScan & Postshot or XGRIDS laserscanner offer amazing possibilities regarding the visual representation of 3D scenes in UnrealEngine. Techniques to import and use Gaussian Splats from various sources will be covered as well.

Are you planning to implement RealityScan for crime scene or accident reconstruction? In our training “3D Crime Scene Survey & Accident Reconstruction with RealityScan” we guide you through the optimal workflow for three-dimensional reconstruction – from data acquisition with laser scanner, camera & UAV to the photorealistic 3D model/ortho projection.



Training content “3D Crime Scene & Accident Reconstruction with RealityScan”:

Day 1

  • Technical basics photogrammetry & laser scanning
  • Camera settings, illumination and cross polarization
  • Theory of data acquisition – how to capture a room/location/object correctly
  • Optional: Basics of photography
  • Optional: Technical basics UAV (half day)
  • Optional: Practical exercise: joint data acquisition (TLS, PGM) (half day)
  • Optional: Gaussian Splatting with RealityScan and Postshot


Day 2

  • RealityScan GUI & Workflow
  • General settings & menus
  • Data import
  • Alignment process in RealityScan
  • Reconstruction process in RealityScan
  • Clipping box
  • Ground Control Points (GCP) & Control points
  • Working with markers and scales in RealityScan
  • Control points and merging individual components


Day 3

  • Using image data correctly with RTK position accuracy
  • Importing laser scan data and aligning with images
  • Generate point cloud & mesh
  • Mesh processing in RS
  • Texturing & coloring
  • Simplification of models
  • Texture projection onto simplified models
  • Orthoprojections in RealityScan


Day 4

  • Image mosaicking workflow
  • Editing orthomosaics
  • 3DGS – creating Gaussian Splat models with RealityScan & Postshot / XGRIDS laser scanner
  • Volume calculations
  • Color balancing in RealityScan
  • Working with image layers
  • Masks in RealityCapture
  • Renderings and animations in RealityScan
  • Digitizing objects/evidence – how to scan smaller objects from all sides

Day 5

  • Automation / Batch processing with Command Line Interface (CLI)
  • Working with the realtime assistant
  • Data export: point clouds, textured meshes and orthoprojections
  • Preparation and export of 3D models / Splats / pointclouds to UnrealEngine / Sketchfab / CesiumIon / NIRA / Potree / ArcGIS Pro or Twinmotion
  • Creating a VR Scene with GaussianSplats and Mesh data
  • External open source software for further processing of the generated data


We offer individual or group trainings for RealityScan at your location or at our premises in Aachen/DE, tailored to your needs. The focus/content and duration of the training can be freely selected. The course can also be completed online. All participants receive a certificate of participation after the training.

Prerequisites for participation are an own workstation or laptop as well as a current RealityScan, TwinMotion and UnrealEngine Installation.

Required for participation in training:

  • Computer/laptop with current RealityScan installation
  • min. 16 GB RAM (better 32GB)
  • 64bit Microsoft Windows version 7 / 8 / 8.1 / 10 / 11 or Windows Server version 2008+
  • NVIDIA graphics card with CUDA 3.0+ capabilities and min. 6GB VRAM
  • CUDA Toolkit 10.2, minimum driver version 441.22.


We recommend using a computer with at least 4 CPU cores, 32GB RAM and 6GB VRAM. If you don’t have an NVIDIA card, you can still run the application and register images, but not create textured meshes.


For more information on how to attend a training session, as well as pricing, please contact us at info(at)3ds-scan.de and request a quote.

With kind support of EPIC