Pedestrian Detection
First Claim
1. A classifier for determining whether an instance belongs to a particular class of instances of a plurality of classes, the classifier comprising:
- a plurality of first classifiers that operate on an instance to provide an indication as to which class the instance belongs, each of which classifiers is trained on a different subset of training instances from a same set of training instances wherein each training subset comprises a group of training instances that share at least one characteristic trait and different subsets have a different at least one characteristic trait; and
a second classifier that operates on the indications provided by the first classifiers to provide an indication as to which class the instance belongs.
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Accused Products
Abstract
A classifier for determining whether an instance belongs to a particular class of instances of a plurality of classes, the classifier comprising: a plurality of first classifiers that operate on an instance to provide an indication as to which class the instance belongs, each of which classifiers is trained on a different subset of training instances from a same set of training instances wherein each training subset comprises a group of training instances that share at least one characteristic trait and different subsets have a different at least one characteristic trait; and a second classifier that operates on the indications provided by the first classifiers to provide an indication as to which class the instance belongs.
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Citations
21 Claims
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1. A classifier for determining whether an instance belongs to a particular class of instances of a plurality of classes, the classifier comprising:
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a plurality of first classifiers that operate on an instance to provide an indication as to which class the instance belongs, each of which classifiers is trained on a different subset of training instances from a same set of training instances wherein each training subset comprises a group of training instances that share at least one characteristic trait and different subsets have a different at least one characteristic trait; and
a second classifier that operates on the indications provided by the first classifiers to provide an indication as to which class the instance belongs. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of using a set of training instances to train a classifier comprising a plurality of first classifiers that operate on an instance to indicate a class of instances to which the instance belongs and a second classifier that uses indications provided by the first classifiers to determine a class to which the instance belongs, the method comprising:
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grouping training instances from the set of training instances into a plurality of subsets of training instances wherein each training subset comprises a group of training instances that share at least one characteristic trait and different subsets have a different same at least one characteristic trait;
training each of the first classifiers on a different one of the training subsets; and
training the second classifier on substantially all the training instances. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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18. A classifier for determining a class to which an instance is represented by a descriptor vector in a space of vectors belongs comprising:
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a plurality of sets of training vectors wherein vectors that belong to a same set represent training instances in a same class of instances and training vectors belonging to different sets represent training instances belonging to different classes of instances; and
an operator that determines for each set of vectors projections of the descriptor vector on all the training vectors in the set and determines to which class the instance belongs responsive to the projections on the sets. - View Dependent Claims (19)
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20. A method of classifying an instance represented by a descriptor vector comprising:
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providing a plurality of sets of training descriptor vectors wherein vectors that belong to a same set represent training instances in a same class of instances and training vectors belonging to different sets represent training instances belonging to different classes of instances;
determining for each set of training vectors projections of the descriptor vector on all the training vectors in the set; and
determining to which class the instance belongs responsive to the projections. - View Dependent Claims (21)
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Specification