In September of 2010 specialists of ScannBI technology took part in an experiment organized under the aegis of the Odyssey project on the basis of the BKA facilities, Germany.
The idea of the experiment was to inspect and compare some existing technologies for automated ballistic examination as well as its corresponding equipment.
For this purpose a DB of preselected and indexed real objects (including ~ 400 bullets and ~400 cartridge-cases – 9 mm Luger ammunition) was prepared by BKA specialists with the help of different European forensic labs, which had sent their objects to BKA.
Every participant should record the objects into computer and compare them “all against all” as for bullets as for cartridge-cases automatically and visually.
ScannBI Technology was the first company which started the experiment.
In the experiment the newest Evofinder system – “Forte edition” – was used for acquiring and comparing data: bullets and cartridge-cases images. The system version “Forte edition” is equipped by Real Surface Creation technology which along with “frame-fragment” technology significantly improves the system effectiveness.
The main results of the experiment are presented below.
The average speed of date input (images +accompanying information) is ~200 objects per day.
b. On the SAS were saved 394 images of indexed bullets and 394 images of indexed cartridge-cases.
The average time of one bullet data entering (including object fixation, third-dimensional image recording and saving in the SAS) – 3 min.
The average time of one cartridge-case data entering (including object fixation, third-dimensional image recording and saving in the SAS) – 3 min 30 sec.
c. The correlations (all-against-all) for bullets and cartridges were done and results were saved in the SAS.
The average correlation time for one bullet (land marks) – less than 1 sec.
The average correlation time for one cartridge-case (fire-pin mark + breech face mark) – 1 min 10 sec.
d. The diagrams of the correlations results – sum of ranks in hit lists for paired (“brother”) objects – are shown below.