White Papers




Accuracy Evaluation of the FARO HD Angular Momentum Solution in Relation to the RICSAC Staged Crash Events


Abstract:

FARO HD is a software application designed to allow its users to draw crash scene diagrams from electronic measurements or hand measurements, create 3D animations, and create 3D scene models. It also incorporates a linear momentum tool which is designed to be utilized on the scene data. The results generated by that tool are often taken to both criminal and civil trials at which the accuracy of the tool will be questioned. That means the user of the system must be able to describe how the tool works in terms of foundational mathematical algorithms. Users must also give information on the accuracy of the tool in relation to staged crashes. The validation procedure must be described and documented for review by non-scientific parties.

This paper describes the way the integrated momentum solution in FARO HD works and the method and results of the validation process. The paper provides the output from the use of the tool and the output diagrams and charts as provided by the RICSAC tests.

Download the SAMI Validation Paper




Rapid Generation of Digital Terrain Models using Total Station Data and Aerial Images or Satellite Imagery


Abstract:

Many crashes occur on terrain that cannot be assumed to be flat. In many cases if investigators made the assumption that the surface on which the vehicles collided was flat, it would introduce serious errors to any analysis or computation of reconstruction findings.

Most modern reconstruction experts, whether employed as independent consultants to the litigation industry, or employed as police experts will rely on total station measuring instruments to establish the coordinates of the overall scene geometry as well as any relevant measurement points. Once measurement points are established it can often be seen that the scene was not flat as the measurement points will show significant differences in the elevation (Z) values.

A DTM (Digital Terrain Model) has been developed in the FARO 360 HD software product to allow investigators to model the scene three dimensionally by uniting the scene measurements with accurate satellite or aerial images. The procedure is described and reviewed in this paper.

Download the DTM White Paper




Evaluation of the FARO HD ICATS System in Relation to the RICSAC Staged Crash Events.


Abstract:

FARO HD is a software application designed to allow users to draw crash scene diagrams from electronic measurements or hand measurements, and to create three-dimensional animations and scene models. It also contains a 2.5D (2D with terrain following) simulation tool called ICATS (Interactive Collision and Trajectory Simulation). ICATS is based on the original published SMAC (Simulation Model of Automobile Collisions) algorithms produced for NHTSA (National Highway Traffic Safety Administration) in the 1970s.

The results generated by this tool are often taken to both criminal and civil trials at which the accuracy of the tool will be questioned. This means that the user of the system must be able to describe how the tool works in terms of foundational mathematical algorithms. Users must also give information on the accuracy of the tool in relation to staged crashes. The validation procedure must be described and documented for review by non-scientific parties. This paper describes the way the ICATS system in FARO HD works and the method and results of the validation study.

Download the ICATS White Paper



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