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Candid covariance-free incremental principal component analysis

Juyang Weng, Yilu Zhang, Wey-Shiuan Hwang·2003·IEEE Transactions on Pattern Analysis and Machine Intelligence

Abstract

Appearance-based image analysis techniques require fast computation of principal components of high-dimensional image vectors. We introduce a fast incremental principal component analysis (IPCA) algorithm, called candid covariance-free IPCA (CCIPCA), used to compute the principal components of a sequence of samples incrementally without estimating the covariance matrix (so covariance-free). The new method is motivated by the concept of statistical efficiency (the estimate has the smallest variance given the observed data). To do this, it keeps the scale of observations and computes the mean of observations incrementally, which is an efficient estimate for some well known distributions (e.g., Gaussian), although the highest possible efficiency is not guaranteed in our case because of unknown sample distribution. The method is for real-time applications and, thus, it does not allow iterations. It converges very fast for high-dimensional image vectors. Some links between IPCA and the development of the cerebral cortex are also discussed.

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Metadata

Authors
Weng, J., Zhang, Y., & Hwang, W.-S.
Venue
IEEE Transactions on Pattern Analysis and Machine Intelligence
Published
2003-08
Volume
25
Issue
8
Pages
1034-1040
ISSN
0162-8828 (ISSN-L)
OpenAlex
W2141681031
Cited by
464
References
2
FWCI
15.32
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Candid covariance-free incremental principal component analysis. https://app.cochat.ai/papers/10.1109/tpami.2003.1217609
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Weng, J., Zhang, Y., & Hwang, W.-S. (2003). Candid covariance-free incremental principal component analysis. IEEE Transactions on Pattern Analysis and Machine Intelligence. https://doi.org/10.1109/tpami.2003.1217609

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