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Design and use of a computer-assisted postmortem identification system.

L Lorton, W H Langley

    Journal of Forensic Sciences
    |July 1, 1986
    PubMed
    Summary
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    A computer-assisted postmortem identification system effectively uses dental records for accurate identification. Even with up to 30% database errors, the system reliably matches identities, showcasing its robustness in forensic science.

    Area of Science:

    • Forensic Science
    • Computer Science
    • Odontology

    Background:

    • Postmortem identification is crucial in forensic investigations.
    • Traditional methods can be time-consuming and resource-intensive.
    • Dental records offer unique characteristics for identification.

    Purpose of the Study:

    • To discuss the design and rationale of a computer-assisted postmortem identification system.
    • To evaluate the system's performance using simulation trials.
    • To assess the impact of database errors on identification accuracy.

    Main Methods:

    • Development of a computer-assisted system for postmortem identification.
    • Extensive simulation trials using a database of 578 records.
    • Analysis of dental characteristics (fillings, missing teeth) for identification.

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  • Evaluation of system performance under varying database error rates.

    • Main Results:

    • The system can accurately separate individuals using 4 or more dental characteristics.
    • Dental characteristics demonstrate high selectivity for identity matching.
    • Error rates up to 30% in the database have minimal impact on correct identity matches.
    • The system is deployable on various computer platforms (microcomputer, desktop, minicomputer).

    Conclusions:

    • Computer-assisted systems utilizing dental records are highly effective for postmortem identification.
    • The system demonstrates robustness against database errors, enhancing reliability.
    • Further development aims to expand the database capacity (25,000 records) efficiently.