Image analysis – Pattern recognition – Feature extraction
Patent
1995-06-30
2000-10-24
Mehta, Bhavesh
Image analysis
Pattern recognition
Feature extraction
382224, 382228, G06K 946, G06K 962
Patent
active
061379093
ABSTRACT:
A system and method for ranking features by exploiting their relationship the Fisher projection space. The system ranks n features in a feature set using a design set comprising exemplars from each of M possible event classes of an associated feature-based classification system. A training set is created by randomly selecting exemplars from each of the M classes in the design set. A "smoothed" Fisher projection space for the training set is created by replacing the sample means and the within-class sample covariance matrix normally used in deriving a Fisher projection space with expressions for the mean vectors and covariance matrices derived from event class probability density function estimates. The angle between a given feature and the smoothed Fisher projection space is calculated for each feature in the feature set, and the features are then ordered by increasing numerical size of this angle. The system produces a reduced feature set by eliminating those features which are not important for classification based on the linear ranking of the features.
REFERENCES:
patent: 4661913 (1987-04-01), Wu
patent: 5343537 (1994-08-01), Bellegarda
patent: 5392363 (1995-02-01), Fujisaki
patent: 5479523 (1995-12-01), Gaborski
patent: 5491758 (1996-02-01), Bellegarda
patent: 5544257 (1996-08-01), Bellegarda
patent: 5544261 (1996-08-01), Bellegarda
patent: 5590261 (1996-12-01), Sclaroff
Greineder Stephen G.
Luginbuhl Tod E.
Streit Roy L.
Lall Prithvi C.
McGowan Michael J.
Mehta Bhavesh
Oglo Michael F.
The United States of America as represented by the Secretary of
LandOfFree
System and method for feature set reduction does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with System and method for feature set reduction, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System and method for feature set reduction will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1973183