Title
Learning detectors quickly using structured covariance matrices.
Abstract
Computer vision is increasingly becoming interested in the rapid estimation of object detectors. Canonical hard negative mining strategies are slow as they require multiple passes of the large negative training set. Recent work has demonstrated that if the distribution of negative examples is assumed to be stationary, then Linear Discriminant Analysis (LDA) can learn comparable detectors without ever revisiting the negative set. Even with this insight, however, the time to learn a single object detector can still be on the order of tens of seconds on a modern desktop computer. This paper proposes to leverage the resulting structured covariance matrix to obtain detectors with identical performance in orders of magnitude less time and memory. We elucidate an important connection to the correlation filter literature, demonstrating that these can also be trained without ever revisiting the negative set.
Year
Venue
Field
2014
CoRR
Training set,Correlation filter,Matrix (mathematics),Computer science,Artificial intelligence,Covariance matrix,Linear discriminant analysis,Detector,Machine learning,Covariance
DocType
Volume
Citations 
Journal
abs/1403.7321
3
PageRank 
References 
Authors
0.41
15
3
Name
Order
Citations
PageRank
Jack Valmadre146614.08
Sridha Sridharan22092222.69
Simon Lucey32034116.77