Clinical forensic height measurements on injured people using a multi camera device for 3D documentation

Sieberth, Till; Ebert, Lars C.; Gentile, Simon; Fliss, Barbara

doi:10.1007/s12024-020-00282-9

Cited by 10 publications

(5 citation statements)

References 24 publications

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“…In the last years, 3D reconstruction has supplemented medico-legal activities, first of all in crime scene reconstruction [ 27 , 28 , 29 ]. Forensic pathologists also benefit from 3D surface documentation, but usually complex, expensive, and/or unwieldy instrumentations are required [ 1 , 30 , 31 ]. The introduction of photogrammetry has made 3D documentation easier than in the past since the required equipment consists basically of a camera and a computer [ 2 , 3 , 32 , 33 , 34 , 35 ].…”

Section: Discussionmentioning

confidence: 99%

The Introduction of a New Diagnostic Tool in Forensic Pathology: LiDAR Sensor for 3D Autopsy Documentation

et al. 2022

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Autopsy is a complex and unrepeatable procedure. It is essential to have the possibility of reviewing the autoptic findings, especially when it is done for medico-legal purposes. Traditional photography is not always adequate to record forensic practice since two-dimensional images could lead to distortion and misinterpretation. Three-dimensional (3D) reconstructions of autoptic findings could be a new way to document the autopsy. Besides, nowadays, smartphones and tablets equipped with a LiDAR sensor make it extremely easy to elaborate a 3D model directly in the autopsy room. Herein, a quality and trustworthiness evaluation of 3D models obtained during ten autopsies is made comparing 3D models and conventional autopsy photographic records. Three-dimensional models were realistic and accurate and allowed precise measurements. The review of the autoptic report was facilitated by the 3D model. Conclusions: The LiDAR sensor and 3D models have been demonstrated to be a valid tool to introduce some kind of reproducibility into the autoptic practice.

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Section: Discussionmentioning

confidence: 99%

The Introduction of a New Diagnostic Tool in Forensic Pathology: LiDAR Sensor for 3D Autopsy Documentation

et al. 2022

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“…The hardware costs for the VR approach are also higher than with a 2D image approach, requiring VR set and computer as well as the photobox or other 3D documentation equipment. However, the VR equipment as well as the photobox, can be used for a variety of other purposes as for example body height and proportion reconstructions or whole body documentation for forensic medical purposes [4,23,36]. In comparison to other methods, including video parade or line-up, in which the persons need to be available longer time periods, as well as the requirement for hardware or even specialised rooms for the line-up, the presented VR technique might be less expensive.…”

Section: Modalitymentioning

confidence: 99%

“…Leipner et al [23] presented a device to 3D digitise living persons with the multi camera device photobox [23]. This device can be used for the 3D documentation of living persons, and was previously used for forensic examinations purposes and body height reconstructions [4,29,36].…”

Section: Introductionmentioning

confidence: 99%

Identification Parade in Immersive Virtual Reality - a Technical Setup

Sieberth

Seckiner

2022

SSRN Journal

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“…The 2D Photobox analysis was performed last with each pathologist, as the images taken by Photobox showed large proportions of the body and thus required large amounts of image manipulation to avoid detection bias. Additionally, the injury dimension measurements were not performed using the 3D model on the screen, as was performed previously, proving that both methods allow for a higher level of accuracy than that allowed for by 2D forensic photographs [10,11,15].…”

Section: Examinationmentioning

confidence: 99%

“…With this method, it is possible to document the 3D shape and orientation of an object in space by using two or more overlapping images [6]. In forensic medicine, photogrammetry has been used to match injurycausing objects to detected wounds [7][8][9][10] and has been shown to be more precise in the measurement of wound size than the 2D photography method [11]. 3D documentation requires the examined object to stay stationary during data acquisition, which can be an issue, especially with living persons.…”

Section: Introductionmentioning

confidence: 99%

Comparison of superficial wound documentation using 2D forensic photography, 3D photogrammetry, Botscan© and VR with real-life examination

Massini

Ebert

Ampanozi

et al. 2021

Forensic Sci Med Pathol

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Evidence acquisition, interpretation and preservation are essential parts of forensic case work that make a standardized documentation process fundamental. The most commonly used method for the documentation and interpretation of superficial wounds is a combination of two modalities: two-dimensional (2D) photography for evidence preservation and real-life examination for wound analysis. As technologies continue to develop, 2D photography is being enhanced with three-dimensional (3D) documentation technology. In our study, we compared the real-life examination of superficial wounds using four different technical documentation and visualization methods.To test the different methods, a mannequin was equipped with several injury stickers, and then the different methods were applied. A total of 42 artificial injury stickers were documented in regard to orientation, form, color, size, wound borders, wound corners and suspected mechanism of injury for the injury mechanism. As the gold standard, superficial wounds were visually examined by two board-certified forensic pathologists directly on the mannequin. These results were compared to an examination using standard 2D forensic photography; 2D photography using the multicamera system Botscan©, which included predefined viewing positions all around the body; and 3D photogrammetric reconstruction based on images visualized both on screen and in a virtual reality (VR) using a head-mounted display (HMD).The results of the gold standard examination showed that the two forensic pathologists had an inter-reader agreement ranging from 69% for the orientation and 11% for the size of the wounds. A substantial portion of the direct visual documentation showed only a partial overlap, especially for the items of size and color, thereby prohibiting the statistical comparison of these two items. A forest plot analysis of the remaining six items showed no significant difference between the methods. We found that among the forensic pathologists, there was high variability regarding the vocabulary used for the description of wound morphology, which complicated the exact comparison of the two documentations of the same wound.There were no significant differences for any of the four methods compared to the gold standard, thereby challenging the role of real-life examination and 2D photography as the most reliable documentation approaches. Further studies with real injuries are necessary to support our evaluation that technical examination methods involving multicamera systems and 3D visualization for whole-body examination might be a valid alternative in future forensic documentation.

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Clinical forensic height measurements on injured people using a multi camera device for 3D documentation

Cited by 10 publications

References 24 publications

The Introduction of a New Diagnostic Tool in Forensic Pathology: LiDAR Sensor for 3D Autopsy Documentation

The Introduction of a New Diagnostic Tool in Forensic Pathology: LiDAR Sensor for 3D Autopsy Documentation

Identification Parade in Immersive Virtual Reality - a Technical Setup

Comparison of superficial wound documentation using 2D forensic photography, 3D photogrammetry, Botscan© and VR with real-life examination

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