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Recognizing imprecisely localized, partially occluded, and expression variant faces from a single sample per class

Martinez, A.M.·2002·IEEE Transactions on Pattern Analysis and Machine Intelligence

Abstract

The classical way of attempting to solve the face (or object) recognition problem is by using large and representative data sets. In many applications, though, only one sample per class is available to the system. In this contribution, we describe a probabilistic approach that is able to compensate for imprecisely localized, partially occluded, and expression-variant faces even when only one single training sample per class is available to the system. To solve the localization problem, we find the subspace (within the feature space, e.g., eigenspace) that represents this error for each of the training images. To resolve the occlusion problem, each face is divided into k local regions which are analyzed in isolation. In contrast with other approaches where a simple voting space is used, we present a probabilistic method that analyzes how "good" a local match is. To make the recognition system less sensitive to the differences between the facial expression displayed on the training and the testing images, we weight the results obtained on each local area on the basis of how much of this local area is affected by the expression displayed on the current test image.

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Metadata

Authors
Martinez, A. M.
Venue
IEEE Transactions on Pattern Analysis and Machine Intelligence
Published
2002-06
Volume
24
Issue
6
Pages
748-763
ISSN
0162-8828 (ISSN-L)
OpenAlex
W2107369107
Cited by
813
References
8
FWCI
28.83
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Recognizing imprecisely localized, partially occluded, and expression variant faces from a single sample per class. https://app.cochat.ai/papers/10.1109/tpami.2002.1008382
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Martinez, A. M. (2002). Recognizing imprecisely localized, partially occluded, and expression variant faces from a single sample per class. IEEE Transactions on Pattern Analysis and Machine Intelligence. https://doi.org/10.1109/tpami.2002.1008382

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