Analysis of the Accuracy of Crime Scene Mapping Using 3D Laser Scanners

Wieczorek, Tadeusz; Przyłucki, R.; Lisok, Joanna; Smagór, A.

doi:10.1007/978-3-030-11187-8_33

Cited by 7 publications

(2 citation statements)

References 3 publications

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“…To compensate for the technical drawbacks, most approaches utilise more than one scanning device/modality, e.g., pairing photogrammetry with laser scanning, or handheld with terrestrial laser scanning. Such an approach is followed by [8], where the scope is to compare different scanning technologies for a variety of objects of interest, including furniture and shoe prints. Their toolset is composed of a handheld structured light device (Go!Scan 50) and two terrestrial laser scanners: Leica P40 and Z + F Imager 5010X.…”

Section: Related Workmentioning

confidence: 99%

A Study of 3D Digitisation Modalities for Crime Scene Investigation

et al. 2021

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A valuable aspect during crime scene investigation is the digital documentation of the scene. Traditional means of documentation include photography and in situ measurements from experts for further analysis. Although 3D reconstruction of pertinent scenes has already been explored as a complementary tool in investigation pipelines, such technology is considered unfamiliar and not yet widely adopted. This is explained by the expensive and specialised digitisation equipment that is available so far. However, the emergence of high-precision but low-cost devices capable of scanning scenes or objects in 3D has been proven as a reliable alternative to their counterparts. This paper summarises and analyses the state-of-the-art technologies in scene documentation using 3D digitisation and assesses the usefulness in typical police-related situations and the forensics domain in general. We present the methodology for acquiring data for 3D reconstruction of various types of scenes. Emphasis is placed on the applicability of each technique in a wide range of situations, ranging in type and size. The application of each reconstruction method is considered in this context and compared with respect to additional constraints, such as time availability and simplicity of operation of the corresponding scanning modality. To further support our findings, we release a multi-modal dataset obtained from a hypothetical indoor crime scene to the public.

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Section: Related Workmentioning

confidence: 99%

A Study of 3D Digitisation Modalities for Crime Scene Investigation

et al. 2021

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“…In a CSI, the forensic pathologist or the medical examiner is the official primarily responsible for the complex act of reconstructing the dynamics of a crime scene [38]. The main objectives of forensic medicine are the freezing or fixation of the crime scene, findings, collection of traces, technical assessments, biological samples collection, identification of the cadaver (through autopsy), and records of the CSI [39].…”

Section: Discussionmentioning

confidence: 99%

Advances in Technologies in Crime Scene Investigation

Esposito,

Sessa,

Cocimano

et al. 2023

Diagnostics

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Crime scene investigation (CSI) is the complex act of reconstructing the dynamics that led to a crime and the circumstances of its perpetration. Crystallizing the CSI is a difficult task for the forensic pathologist; however, it is often requested by the public prosecutor and many judicial cases remain unsolved precisely for this reason. Recent years have seen an improvement in the ability of 3D scanning technology to obtain dense surface scans of large-scale spaces, for surveying, engineering, archaeology, and medical purposes such as forensics. The applications of this new technology are growing every day: forensic measurement of wounds in clinical reports, for example, reconstruction of traffic accidents, bullet trajectory studies in gunshot wounds, and 3D bloodstain pattern analysis. A retrospective analysis was conducted across all crime scene investigations performed by the forensic staff of the Department of Forensic Pathology of the University of Catania from January 2019 to June 2022. Inclusion criteria were the use of a laser scanner (LS), the use of a camera, a full investigative scene, and collection of circumstantial data thanks to the help of the judicial police. Cases in which the LS was not used were excluded. Out of 200 CSIs, 5 were included in the present study. In case number 1, the use of the LS made it possible to create a complete scale plan of the crime scene in a few hours, allowing a ship to be quickly returned to the judicial police officer. In case 2 (fall from a height), the LS clarified the suicidal intent of the deceased. In case number 3 it was possible to reconstruct a crime scene after many years. In case 4, the LS provided a great contribution in making a differential diagnosis between suicide and homicide. In case 5, the LS was fundamental for the COVID team in planning the study of COVID-19 pathways and areas within a hospital with the aim of reduction of nosocomial transmission. In conclusion, the use of the LS allowed the forensic staff to crystallize the investigative scene, making it a useful tool.

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Designing and evaluation of a mixed reality system for crime scene investigation training: a hybrid approach

Albeedan,

Kolivanda,

Hammady

2024

Virtual Reality

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Police investigation in real-life crime scenes is an essential aspect of forensic science education. However, the practicality of bringing young investigators to actual crime scenes is often hindered by the costs and challenges involved. In order to overcome these obstacles, new technologies such as mixed reality (MR) are being explored as potential solutions. MR technology offers an interactive and cost-effective way to simulate real-life crime scenes, providing a valuable training experience for young investigators. This paper presents a novel design of a MR system using Microsoft HoloLens 2.0, which is tailored to work in a spatial 3D scanned and reconstructed crime scene using FARO point cloud 3D scanner X130 blended with photogrammetry techniques. The system was developed through the lens of Experiential Learning Theory and designed using a participatory approach, providing a cost-effective solution to help trained Kuwaiti police officers enhance their investigative skills. In order to evaluate the system’s user experience and user interaction, the Questionnaire of User Interaction Satisfaction and User Experience Questionnaire were utilised. Forty-four young police officers evaluated the system. Police students showed positive levels of satisfaction with user interaction and overall user experience with minimal negative feedback. Female students showed higher satisfaction with the overall impression compared to male students. Based on the positive feedback regarding the system expansion, the system will be taken into the commercialisation stage in the future to be provided as an essential tool for crime scene education and investigation practices.

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Analysis of the Accuracy of Crime Scene Mapping Using 3D Laser Scanners

Cited by 7 publications

References 3 publications

A Study of 3D Digitisation Modalities for Crime Scene Investigation

A Study of 3D Digitisation Modalities for Crime Scene Investigation

Advances in Technologies in Crime Scene Investigation

Designing and evaluation of a mixed reality system for crime scene investigation training: a hybrid approach

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