Biology Articles

6 articles listed in reverse chronological order. View articles by field type using links on the right.

An evaluation of three-dimensional photogrammetric and morphometric techniques for estimating volume and mass in Weddell seals Leptonychotes weddellii
01/10/2018 | Roxanne S. Beltran , Brandi Ruscher-Hill, Amy L. Kirkham, Jennifer M. Burns
Applications: All and Biology

Body mass dynamics of animals can indicate critical associations between extrinsic factors and population vital rates. Photogrammetry can be used to estimate mass of individuals in species whose life histories make it logistically difficult to obtain direct body mass measurements.

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Photogrammetric Documentation of Regions of Interest at Autopsy – A Pilot Study
08/03/2013 | Liselott Slot, Peter K. Larsen, Niels Lynnerup
J Forensic Sci, 2013, doi: 10.1111/1556-4029.12289
Applications: All, Biology, and Forensics & Accident Recon.

In this pilot study, the authors tested whether photogrammetry can replace or supplement physical measurements made during autopsies and, based on such measurements, whether virtual computer models may be applicable in forensic reconstructions.

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How to weigh an elephant seal with one finger: a simple three-dimensional photogrammetric application
02/03/2009 | P. J. Nico de Bruyn, Marthán N. Bester, Alejandro R. Carlini, W. Chris Oosthuizen; Mammal Research Institute, Department of Zoology and Entomology, University of Pretoria; Departamento de Ciencias Biológicas, Instituto Antárctico Argentino
Applications: All and Biology

Several studies have developed photogrammetric techniques for indirect mass estimation of seals. Unfortunately, these techniques are often narrowly delineated for specific field scenarios or species. Many require sophisticated, custom-designed equipment or analytical tools, limiting their applicability. We aimed to devise a photogrammetric technique for accurate volume mass estimation of seals under a variety of field scenarios without manipulation of the animal and with minimal equipment.

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Using digital images to reconstruct three-dimensional biological forms: a new tool for morphological studies
01/02/2008 | YLENIA CHIARI, BING WANG, HOLLY RUSHMEIER, ADALGISA CACCONE; Department of Ecology and Evolutionary Biology & Department of Computer Science, Yale University
Biological Journal of the Linnean Society
Applications: All and Biology

Reconstructing the three-dimensional (3D) form of living organisms in their natural habitat is a challenge and, currently, there are no methods enabling reconstruction over a wide range of field conditions and animal sizes and forms. (see also example on PhotoModeler Scanner Application Examples).

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Three-dimensional morphometric measurements of reef corals using underwater photogrammetry techniques
08/11/2001 | J. Bythell, Department of Marine Sciences and Coastal Management, University of Newcastle, P. Pan, Department of Maritime Studies and International Transport, University College of Wales at Cardiff, and J. Lee, Virtually Unlimited, Kingskerswell, UK
Coral Reefs, Springer-Verlag, Issue: Volume 20, Number 3
Applications: All and Biology

The authors describe a novel technical approach to accurately measure surface area and other morphological characteristics of corals and similar irregular objects from underwater photography. A standard Nikonos camera system was used with a slide-scanner to produce multiple overlapping images of the object. PhotoModeler software was used to process the images and build a 3-D model of the object, which was subsequently analyzed using 3-D computer-aided design (CAD) packages. External link is to abstract – complete study available to members.

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Photogrammetric measurement of deformations of horse hoof horn capsules
2001 | P. Jordan, J. Willneff, N. D'Apuzzo, M. Weishaupt, T. Wistner, J. Auer; Department of Veterinary Surgery, University of Zurich & Institute of Geodesy and Photogrammetry, Swiss Federal Institute of Technology Zurich
Videometrics and Optical Methods for 3D Shape Measurement, Proceeding of SPIE
Applications: All and Biology

Many equine foot problems, from foot bruising and quarter cracks to laminitis and navicular disease are either caused or worsened by the severe loads the feet experience during locomotion.”. The authors describe a system using video cameras and a force plate to determine deformation under load of a horse hoof.

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