Tommy Bergmann

• Master of Science
• Research Associate at University of Applied Sciences Mittweida

Zusammenfassung Hintergrund Die forensische Altersschätzung von Blutflecken mittels UV-Vis-Spektroskopie basiert auf der Degradation von Hämoglobinderivaten und bietet eine vielversprechende Methode für die Tatortarbeit. Allerdings erschweren Umweltfaktoren wie Temperatur, Licht und Feuchtigkeit die praktische Anwendung, da sie die Alterungsprozes...

In the realm of forensic science, the analysis and visualization of data and traces rely heavily on the interpretation of colors. This chapter delves into the multifaceted role colors play in forensic investigations, exploring their significance in various domains, such as bloodstain analysis, fingerprint examination, image forensics, and the study...

This book chapter delves into the field of colorimetric analysis of bloodstains in forensic science, focusing on its application in crime scene investigation. Therefore it provides a comprehensive overview of the biological background of age-induced color changes. The chapter begins with an introduction to the significance of blood evidence in solv...

The classification of detected bloodstains into predetermined categories is a crucial component of the so-called bloodstain pattern analysis. As in other forensic disciplines, deep learning methods may help to reduce human subjectivity within this process, may increase the classification accuracy, shorten the calculation time and thus, enable high-...

Untersuchung der Eignung von Photogrammetrie und Laserscan zur Digitalisierung in der forensischen Blutspurenmusteranalyse Tommy Bergmann - Sven Becker - Dirk Labudde Die Blutspurenmusteranalyse ist in der forensischen Tatortarbeit nicht mehr wegzudenken. Dabei werden Informationen zu Form und Lage von Blutflecken manuell ermittelt und interpretie...

The age estimation of blood traces provides important leads for the chronological assessment of criminal events and their reconstruction. To determine bloodstain age, experimental comparative data from a laboratory environment are used. Under these conditions the utilization of anticoagulants such as EDTA helps to suppress the blood clotting mechan...

Interpreting the evidence found at a crime scene is essential in reconstructing the circumstances of a crime and, hence, solving it. In this paper a classical hypothesis-driven approach is combined with computer-aided modeling. Hereby, the paper focuses on the advantages of 3D models and their added value in the reconstruction of a case by visually...

Fingerprint analysis played a major role in the investigation of criminal offences for the past 100 years and is often the sole means of criminal identification [YA04]. Electrochemical analysis can yield important additional evidence like fingerprint age, biological age and gender of its creator as well as chemical adhesives [GRW12]. Additional gai...

Mithilfe der so genannten Blutmusteranalyse (engl. BPA – blood pattern analysis) können seit über 100 Jahren forensisch relevante Informationen zur Rekonstruktion eines Tatablaufs am Tatort ermittelt werden. Durch den technischen Fortschritt lässt sich auch auf diesem Gebiet mittlerweile der zeitliche Aufwand und die Präzision der Analysen verbesse...

Die Untersuchung von Knochenmaterial aus forensischen oder geschichtlichen Gründen geht mit dem Problem einher, dass die zugrundeliegenden Knochenbibliotheken immer nur an einem Untersuchungsort physisch vorliegen können. Simultane Forschung wird durch diesen Umstand erschwert und die geschichtliche Aufarbeitung entdeckter Gräberfelder erstreckt si...

The age determination of blood traces provides important hints for the chronological assessment of criminal events and their reconstruction. Current methods are often expensive, involve significant experimental complexity and often fail to perform when being applied to aged blood samples taken from different substrates. In this work an absorption s...

Thin-layer chromatography (TLC) is an experimental separation technique for multi-compound mixtures widely applied in various fields of industry and research. In contrast to comparable techniques, TLC is straightforward, cost- and time-efficient, and well-applicable in field operations due to its flexibility. In TLC, after applying a mixture sample...