Physical fit describes a method in which fragmented body parts are put up back together to determine if these pieces were a whole and as to present in a court as potential evidence, the traditional method involves the evidence to be touched by human hands which incurs possible damage to it or even to the person handling it, in case the fragments are sharp objects. Forensic scientists at the University of Portsmouth have devised a way to circumvent the involvement of human touch while handling such fragile evidence, the suggestion is to use 3-D technology for the physical fit which will prove to be more effective, clean and comprehensible to the jury at the time of presenting.
In the study, fragmented burnt human bones were tested against the theory and a 3-D model was mapped out, suitable to be presented to a jury in the court. Two different 3-D imaging techniques were compared to check out the better one, micro-computed tomography and structured light scanning. By the help of virtual 3-D models and prints of burnt human bones, both of the techniques were tested out and thus the demonstration of physical fit without much human involvement was carried out.
The approach using virtual mapping techniques have exited in forensic sciences for a long time but the potential of 3-D models were overlooked in constructing a fragmented, potential evidence in the form of a part of the body and finally to test out the existence of it’s whole. This method limits the handling of the evidence to a bare minimum which cancels out the possibility of damage and contamination. Furthermore better visualizations due to the 3-D models will help the jury to understand better using a 360-degree view, animations and such impactful visualizations which will add value to the presentation and prove to be effective in saving time in the court.
SOURCE: https://www.sciencedaily.com/releases/2020/06/200624095950.htm
Forensic Genesis 
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