A novel method for pair-matching using three-dimensional digital models of bone: mesh-to-mesh value comparison

Karell, Mara A.; Langstaff, H.; Halazonetis, Demetrios J.; Minghetti, Caterina; Frelat, Melanie Agnes; Kranioti, Elena F.

doi:10.1007/s00414-016-1334-3

Cited by 29 publications

(72 citation statements)

References 23 publications

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“…While whole-surface algorithms were developed originally for human faces, it can be applied to any type of surface data where there is a natural correspondence. Regarding full-surface long bone data, they have been studied within comparative anatomy [21], biomedicine [22–24] and forensic anthropology (to match paired elements) [25]. …”

Section: Introductionmentioning

confidence: 99%

Sexual Dimorphism of the Human Tibia through Time: Insights into Shape Variation Using a Surface-Based Approach

et al. 2016

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In this paper we present a three-dimensional (3D) morphometrical assessment of human tibia sexual dimorphism based on whole bone digital representation. To detect shape–size and shape differences between sexes, we used geometric morphometric tools and colour-coded surface deviation maps. The surface-based methodology enabled analysis of sexually dimorphic features throughout the shaft and articular ends of the tibia. The overall study dataset consisted of 183 3D models of adult tibiae from three Czech population subsets, dating to the early medieval (9–10th century) (N = 65), early 20th century (N = 61) and 21st-century (N = 57). The time gap between the chronologically most distant and contemporary datasets was more than 1200 years. The results showed that, in all three datasets, sexual dimorphism was pronounced. There were some sex-dimorphic characteristics common to all three samples, such as tuberosity protrusion, anteriorly bowed shaft and relatively larger articular ends in males. Diachronic comparisons also revealed substantial shape variation related to the most dimorphic area. Male/female distinctions showed a consistent temporal trend regarding the location of dimorphic areas (shifting distally with time), while the maximal deviation between male and female digitized surfaces fluctuated and reached the lowest level in the 21st-century sample. Sex determination on a whole-surface basis yielded the lowest return of correct sex assignment in the 20th-century group, which represented the lowest socioeconomic status. The temporal variation could be attributed to changes in living conditions, the decreasing lower limb loading/labour division in the last 12 centuries having the greatest effect. Overall, the results showed that a surface-based approach is successful for analysing complex long bone geometry.

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Section: Introductionmentioning

confidence: 99%

Sexual Dimorphism of the Human Tibia through Time: Insights into Shape Variation Using a Surface-Based Approach

et al. 2016

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“…Shape and form analyses have become more popular in physical and forensic anthropology (1)(2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15) with a few studies focused on matching algorithms (6,(10)(11)(12)(13)(14)(15). With the adoption of shape analysis, the literature on osteological sorting has started to shift from linear metric approaches (16)(17)(18)(19)(20)(21)(22)(23) to shape and form approaches (10)(11)(12). However, the current literature on shape and form osteological pair-matching has exclusively focused on complete skeletal elements (10)(11)(12).…”

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confidence: 99%

An Automated Two‐dimensional Pairwise form Registration Method for Pair‐matching of Fragmented Skeletal Remains

Lynch

2018

Journal of Forensic Sciences

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This study introduces an automated pairwise method for osteological pair-matching of fragmented skeletal remains using two-dimensional fragmented outlines extracted from photographs. The form data are used in pairwise iterative closest point registrations with rigid transformations. A modified version of the average Hausdorff distance is calculated to remove any coordinate correspondences with outline fracture margins, which allow the distance analysis of fragmented outlines. A dilation modification to the Hausdorff distance is proposed creating a greater separation between true- and false-pairs. The sample consists of 122 calcanei (61 pairs) from the UI-Stanford collection. Performance statistics are provided for simulated fragmented and complete assemblages. Results indicate up to 98% accuracy for fragmented and complete assemblages. The dilated Hausdorff distance performed similarly across assemblages, but showed a slight decrease in performance for the complete assemblage. This approach provides a useful short listing tool to reduce the number of visual comparisons required in large commingled assemblages.

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“…Shape analysis has become commonplace in biological fields (4)(5)(6)(7)(8)(9)(10), such as physical anthropology (11,12), and more recently forensic anthropology (13)(14)(15)(16)(17)(18)(19)(20)(21)(22). However, much of the existing literature relies on methods designed for analyzing shapes in a different manner than is required for pair-matching.…”

mentioning

confidence: 99%

An Automated Two‐Dimensional Form Registration Method for Osteological Pair‐Matching

Lynch¹

2017

Journal of Forensic Sciences

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This study introduces an automated method for osteological pair-matching using two-dimensional outline form data extracted from photographs. A procedure for acquiring photographs that improve the differentiation of specimens from the background is presented along with an extraction procedure that allows the capture of form data from photographs. The raw form data are used in a two-dimensional registration procedure, which combines iterative closest point, K-nearest neighbor search, and iterations around an estimated mean. Form data are used in optimized distance calculations that minimize true-pair difference and maximize false-pair difference. The sample consists of 122 calcanei and 110 tali from the UI-Stanford collection. Performance statistics are provided for the maximum and average Segmented-Hausdorff, Hausdorff, and Procrustes distances to show the comparative statistical results for matching. Results indicate 98.36% and 98.2% accuracy in pinpointing true-pairs for the calcanei and tali, respectively, using a shortlist of one-lowest-distance.

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A novel method for pair-matching using three-dimensional digital models of bone: mesh-to-mesh value comparison

Cited by 29 publications

References 23 publications

Sexual Dimorphism of the Human Tibia through Time: Insights into Shape Variation Using a Surface-Based Approach

Sexual Dimorphism of the Human Tibia through Time: Insights into Shape Variation Using a Surface-Based Approach

An Automated Two‐dimensional Pairwise form Registration Method for Pair‐matching of Fragmented Skeletal Remains

An Automated Two‐Dimensional Form Registration Method for Osteological Pair‐Matching

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