Hostname: page-component-76fb5796d-5g6vh Total loading time: 0 Render date: 2024-04-27T16:29:53.067Z Has data issue: false hasContentIssue false

Reconstruction of three-dimensional anatomical landmark coordinates using video-based stereophotogrammetry

Published online by Cambridge University Press:  01 August 1997

WILLIAM P. STEVENS
Affiliation:
Department of Biology, Georgetown College, Kentucky, USA
Get access

Abstract

A method is described for reconstructing the 3-dimensional coordinates of anatomical landmarks from multiple video images. This method consists of 2 stages: (1) separate reconstructions of landmark coordinates visible in dorsal and ventral orientations using Direct Linear Transformation (Abdel-Aziz & Karara, 1972), and (2) least-squares alignment of the partial reconstructions using landmarks present in both. The repeatability of the overall reconstructions and of individual landmarks were assessed by performing multiple independent reconstructions of landmark coordinates for 2 canid specimens. Results indicate that the repeatability of interlandmark distances based on stereophotogrammetric reconstructions from standard-resolution video images is comparable to that of caliper measurement, and slightly superior to that of electronic 3-dimensional digitisation. At least 4 images should be available per landmark for optimal repeatability, but additional images allow only a slight increase in repeatability.

Type
Research Article
Copyright
© Anatomical Society of Great Britain and Ireland 1997

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)