Accession Number : ADA113787

Title :   Robust and Least Squares Orthogonal Mapping: Methods for the Study of Cephalofacial Form and Growth.

Descriptive Note : Technical rept.,

Corporate Author : PRINCETON UNIV NJ DEPT OF STATISTICS

Personal Author(s) : Olshan,Andrew F ; Siegel,Andrew F ; Swindler,Daris R

PDF Url : ADA113787

Report Date : Apr 1982

Pagination or Media Count : 20

Abstract : A method is presented for the description and analysis of cephalofacial form and growth using two-dimensional coordinate data. The procedure permits the identification of shape differences at specific cephalofacial coordinate locations without reliance upon conventional cephalometric landmarks. The resulting size-standardized coordinates can be analyzed by statistical methods for further data exploration. Two methods of shape transformation--least squares amd robust fitting--are described and compared. An example of the utility of the technique for cephalofacial growth studies is provided. (Author)

Descriptors :   *Cephalometry, *Morphology(Biology), *Least squares method, *Mapping(Transformations), Head(Anatomy), Growth(General), Fitting functions(Mathematics), Orthogonality, Coordinates, Two dimensional, Shape, Position(Location), Comparison, Statistical processes

Subject Categories : Anatomy and Physiology
      Statistics and Probability

Distribution Statement : APPROVED FOR PUBLIC RELEASE