Comparing semi‐landmarking approaches for analyzing three‐dimensional cranial morphology.
Objectives: Increased use of three‐dimensional (3D) imaging data has led to a need for methods capable of capturing rich shape descriptions. Semi‐landmarks have been demonstrated to increase shape information but placement in 3D can be time consuming, computationally expensive, or may introduce arti...
| Publicado en: | American Journal of Physical Anthropology Vol. 175; no. 1; pp. 227 - 238 |
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| Autores principales: | , , |
| Formato: | Artículo |
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Wiley-Blackwell
May2021
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ssf&AN=149782639&site=ehost-live header: @attributes: shortDbName: ssf uiTerm: 149782639 longDbName: Social Sciences Full Text (H.W. Wilson) uiTag: AN controlInfo: bkinfo: jinfo: jid: 00029483 APX jtl: American Journal of Physical Anthropology issn: 00029483 maglogo: Y pubinfo: dt: May2021 vid: 175 iid: 1 pid: 480 pub: Wiley-Blackwell artinfo: ui: 149782639 10.1002/ajpa.24214 ppf: 227 ppct: 11 formats: tig: atl: Comparing semi‐landmarking approaches for analyzing three‐dimensional cranial morphology. aug: au: Rolfe, Sara Davis, Christopher Maga, A. Murat affil: Friday Harbor Labs, University of Washington, Friday Harbor Washington,, USA Department of Anthropology, University of Texas, Austin Texas,, USA Department of Pediatrics, University of Washington, Seattle Washington,, USA Center for Developmental Biology and Regenerative Medicine, Seattle Children's Research Institute, Seattle Washington,, USA su: Hominids Three-dimensional imaging Sampling (Process) Morphometrics Archaeological human remains sug: subj: Hominids Three-dimensional imaging Sampling (Process) Morphometrics Archaeological human remains keyword: 3D morphometrics cranial morphology geometric morphometrics great apes landmarks 3D morphometrics cranial morphology geometric morphometrics great apes landmarks ab: Objectives: Increased use of three‐dimensional (3D) imaging data has led to a need for methods capable of capturing rich shape descriptions. Semi‐landmarks have been demonstrated to increase shape information but placement in 3D can be time consuming, computationally expensive, or may introduce artifacts. This study implements and compares three strategies to more densely sample a 3D image surface. Materials and methods: Three dense sampling strategies: patch, patch‐thin‐plate spline (TPS), and pseudo‐landmark sampling, are implemented to analyze skulls from three species of great apes. To evaluate the shape information added by each strategy, the semi or pseudo‐landmarks are used to estimate a transform between an individual and the population average template. The average mean root squared error between the transformed mesh and the template is used to quantify the success of the transform. Results: The landmark sets generated by each method result in estimates of the template that on average were comparable or exceeded the accuracy of using manual landmarks alone. The patch method demonstrates the most sensitivity to noise and missing data, resulting in outliers with large deviations in the mean shape estimates. Patch‐TPS and pseudo‐landmarking provide more robust performance in the presence of noise and variability in the dataset. Conclusions: Each landmarking strategy was capable of producing shape estimations of the population average templates that were generally comparable to manual landmarks alone while greatly increasing the density of the shape information. This study highlights the potential trade‐offs between correspondence of the semi‐landmark points, consistent point spacing, sample coverage, repeatability, and computational time. pubtype: Academic Journal doctype: Article src: R language: English refInfo: copyright: @attributes: flag: N holdings: @attributes: islocal: N |
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