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Cited by 558

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A Survey of Active Learning Algorithms for Supervised Remote Sensing Image Classification

Open access
Tuia, Devis, Volpi, Michele, Copa, Loris, Kanevski, Mikhail, Munoz-Mari, Jordi·2011·IEEE Journal of Selected Topics in Signal Processing

Abstract

Defining an efficient training set is one of the most delicate phases for the success of remote sensing image classification routines. The complexity of the problem, the limited temporal and financial resources, as well as the high intraclass variance can make an algorithm fail if it is trained with a suboptimal dataset. Active learning aims at building efficient training sets by iteratively improving the model performance through sampling. A user-defined heuristic ranks the unlabeled pixels according to a function of the uncertainty of their class membership and then the user is asked to provide labels for the most uncertain pixels. This paper reviews and tests the main families of active learning algorithms: committee, large margin, and posterior probability-based. For each of them, the most recent advances in the remote sensing community are discussed and some heuristics are detailed and tested. Several challenging remote sensing scenarios are considered, including very high spatial resolution and hyperspectral image classification. Finally, guidelines for choosing the good architecture are provided for new and/or unexperienced user.

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Crossref · 10.1109/jstsp.2011.2139193

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Metadata

Authors
Tuia, D., Volpi, M., Copa, L., Kanevski, M., & Munoz-Mari, J.
Venue
IEEE Journal of Selected Topics in Signal Processing
Published
2011-06
Volume
5
Issue
3
Pages
606-617
ISSN
  • 1932-4553 (ISSN-L)
  • 1941-0484
OpenAlex
W2107131609
Cited by
558
References
3
FWCI
69.16
Type
journal article
Language
en
Open access
green

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