Abstract/Details

Model based three-dimensional kinematic estimation from two-dimensional perspective silhouettes: Application with total knee prostheses

Banks, Scott Arthur.   Massachusetts Institute of Technology ProQuest Dissertations & Theses,  1992. 0572072.

Abstract (summary)

A new technique has been developed for the measurement of 3D motion from 2D perspective projections of an object's silhouette. The technique uses measured perspective projections, a simplified model of perspective geometry, and an accurate description of the object surface geometry to implement a contour matching based position/orientation estimation scheme. Computer modelling studies and in vitro calibration experiments indicate that the technique can achieve measurement accuracies of $\pm$0.2mm ($\pm$1 standard deviation) for object translations in the image plane, $\pm$5mm for translations normal to the image plane, and $\pm$0.75 degrees for all three object rotations. The current implementation is used for measuring the motions of Total Knee Replacements (TKR) in x-ray images The technique was used to measure the knee motions for four subjects with TKR's as they performed a constrained stair-rise maneuver. The human studies' results are consistent with previously reported results for similar studies of TKR subjects. It is proposed that this technique can provide an unique and valuable new tool for quantifying the performance of existing total knee designs and for developing improved knee replacement devices. (Copies available exclusively from MIT Libraries, Rm. 14-0551, Cambridge, MA 02139-4307. Ph. 617-253-5668; Fax 617-253-1690.)

Indexing (details)


Subject
Biomedical research;
Mechanical engineering;
Biomedical engineering
Classification
0541: Biomedical engineering
0548: Mechanical engineering
Identifier / keyword
Applied sciences
Title
Model based three-dimensional kinematic estimation from two-dimensional perspective silhouettes: Application with total knee prostheses
Author
Banks, Scott Arthur
Number of pages
1
Degree date
1992
School code
0753
Source
DAI-B 53/06, Dissertation Abstracts International
Advisor
Mann, Robert W.
University/institution
Massachusetts Institute of Technology
University location
United States -- Massachusetts
Degree
Ph.D.
Source type
Dissertation or Thesis
Language
English
Document type
Dissertation/Thesis
Dissertation/thesis number
0572072
ProQuest document ID
304026472
Copyright
Database copyright ProQuest LLC; ProQuest does not claim copyright in the individual underlying works.
Document URL
https://www.proquest.com/docview/304026472