Military systems applied in the Forensic domain: virtual crime scenes

Sat, 04 Jun 2011 13:10:50 GMT

Virtual crime scenes applied in the Forensic domain

Meet re-lion at the forensic visualisation conference in Nijkerk, The Netherlands on June 22nd. re-lion Small Unit Immersive Trainer (SUIT) will be shown. SUIT is in use to train scenarios of military operations in urban terrain. It provides a natural man-machine interface to interact with the virtual environment.

SUIT is shown here to create awareness of how this unique system can be applied to the forensic industry: crime scenes can be accurately recreated as virtual environments by 3rd party tools. re-lion SUIT can then enable multiple persons (i.e. crime scene investigators, judges, forensic analysts, etc) to walk around in the virtual crime scene at the same time using it as a decision support system.

Semantics assist user in rapid modelling of terrain databases

Sat, 28 May 2011 23:00:00 GMT

Semantics assist user in rapid modelling of terrain databases

Tools currently in use for modelling large terrain databases do too little to assist the user in its workflow. This is due to the fact that the tool has no knowledge of the semantic (or meaning) of the objects the user is manipulating in the terrain database. An example: the user adds a series of trees to create a forest but finds that the tool has automatically placed some of the trees on top of houses that are already present in the terrain database. The tool had no idea what the meaning was of object ‘house’.

Solution

The solution can be found in the use of semantics or, including ‘the meaning of’ in each object. re-lion and the TU Delft are integrating semantics into re-lion Builder. All objects in Builder’s building block repository are tagged with a semantic. This way, Builder knows what kind of object it is and can assist the user while manipulating. The goal of semantics are threefold:

Preventing mistakes made by placing objects that are not supposed to be there.
Accelerating object placement by automatically adding objects based on land use.
The ability to export not only a visual terrain database but also semantics to the simulator.

Of course, semantics are not new: they are sometimes used to map attributes of vector data found in Shape files (SHP) onto objects. There are already a number of dictionaries available containing semantics. Examples are the SEDRIS Environmental Coding Standard (EDCS), the Feature Attribute and Coding Catalogue (FACC), etc. Where possible, existing dictionaries are re-used.

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Military systems applied in the Forensic domain: virtual crime scenes

Virtual crime scenes applied in the Forensic domain

Semantics assist user in rapid modelling of terrain databases

Semantics assist user in rapid modelling of terrain databases

Solution