Early and accurate visualisation of a crime scene is highly desirable such that a rapid, agile, and informed decision-making process can be undertaken by an investigative team. We present a new standard operating procedure for imaging an indoor scene using DSLR cameras conventionally used by crime scene investigators and examiners. The standard operating procedure (SOP) enables the systematic photography of indoor spaces in such a way that the Structure from Motion (SfM) photogrammetry technique can be implemented, allowing the scene to be recreated in Virtual Reality (VR). To demonstrate the method's validity, we compare two VR-rendered representations of an example scene using (a) photographs taken by an experienced crime scene examiner using a conventional photographic method and (b) photographs taken by a novice photographer following the developed SOP.
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http://dx.doi.org/10.1016/j.scijus.2023.01.001 | DOI Listing |
Molecules
January 2025
Department of Law, University of Bergamo, Via Moroni 255, 24127 Bergamo, Italy.
Background: The detection of explosives in crime scene investigations is critical for forensic science. This study explores the application of laser desorption (LD) ion mobility spectrometry (IMS) as a novel method for this purpose utilising a new IMS prototype developed by MaSaTECH.
Methods: The LD sampling technique employs a laser diode module to vaporise explosive traces on surfaces, allowing immediate analysis by IMS without sample preparation.
Memory
January 2025
Department of Psychology, University of Portsmouth, Portsmouth, UK.
Many witnesses are intoxicated at crime scenes, yet little is known of their ability to accurately describe perpetrators to police. We therefore explored the impact of alcohol on delayed verbal face recall across two experiments. Participants were administered an alcoholic or non-alcoholic beverage prior to viewing either one or two unfamiliar female faces, which they described from memory the following day while in a sober state.
View Article and Find Full Text PDFInt J Legal Med
January 2025
Institute of Forensic and Anthropological Science, Seoul National University Medical Research Center, 103 Daehak-ro, Jongno-gu, Seoul, 03080, Republic of Korea.
Inferring the ancestral origin of DNA evidence recovered from crime scenes is crucial in forensic investigations, especially in the absence of a direct suspect match. Ancestry informative markers (AIMs) have been widely researched and commercially developed into panels targeting multiple continental regions. However, existing forensic ancestry inference panels typically group East Asian individuals into a homogenous category without further differentiation.
View Article and Find Full Text PDFInsects
December 2024
Department of Forensic Science, School of Basic Medical Sciences, Central South University, Changsha 410013, China.
Estimating the postmortem interval (PMI) is critical in the field of forensic science, and necrophagous insects play a significant role in this process. (Fabricius) (Diptera: Calliphoridae) is a common necrophagous insect species, making its rapid and accurate identification essential. However, commonly used molecular biology methods, such as DNA barcode, still have some limitations in identifying necrophagous insects as they are often complex, time-consuming, and reliant on laboratory instruments.
View Article and Find Full Text PDFForensic Sci Int
December 2024
Biological and Environmental Sensing Research Unit, King Abdullah Institute for Nanotechnology, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia; Department of Physics and Astronomy, College of Science, King Saud University, Riyadh 11451, Saudi Arabia. Electronic address:
The forensic Deoxyribonucleic Acid (DNA) fingerprinting is a tool for investigating crime scenes by identifying/tracing criminals and linking crime scenes. However, in cases where experts are unable to detect and identify any biological traces or human-derived cells at the crime scene or while testing the samples in the laboratories, all the advantages offered by forensic laboratories lose their significance. It becomes a waste of time, effort, and resources allocated to these laboratories.
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