Application of the Karhunen-Loeve procedure for thecharacterization of human faces
Kirby, M.
Sirovich, L.
Div. of Appl. Math., Brown Univ., Providence, RI ;
This paper appears in: Pattern Analysis and Machine Intelligence, IEEE Transactions on
Publication Date: Jan 1990
Volume: 12,
Issue: 1
On page(s): 103-108
ISSN: 0162-8828
References Cited: 24
CODEN: ITPIDJ
INSPEC Accession Number: 3606846
Digital Object Identifier: 10.1109/34.41390
Current Version Published: 2002-08-06
Abstract
The use of natural symmetries (mirror images) in a well-defined
family of patterns (human faces) is discussed within the framework of
the Karhunen-Loeve expansion. This results in an extension of the data
and imposes even and odd symmetry on the eigenfunctions of the
covariance matrix, without increasing the complexity of the calculation.
The resulting approximation of faces projected from outside of the data
set onto this optimal basis is improved on average
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