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Learning The Discriminative Power-Invariance Trade-Off

Varma, Manik, Ray, Debajyoti·2007·2007 IEEE 11th International Conference on Computer Vision

Abstract

We investigate the problem of learning optimal descriptors for a given classification task. Many hand-crafted descriptors have been proposed in the literature for measuring visual similarity. Looking past initial differences, what really distinguishes one descriptor from another is the tradeoff that it achieves between discriminative power and invariance. Since this trade-off must vary from task to task, no single descriptor can be optimal in all situations. Our focus, in this paper, is on learning the optimal tradeoff for classification given a particular training set and prior constraints. The problem is posed in the kernel learning framework. We learn the optimal, domain-specific kernel as a combination of base kernels corresponding to base features which achieve different levels of trade-off (such as no invariance, rotation invariance, scale invariance, affine invariance, etc.) This leads to a convex optimisation problem with a unique global optimum which can be solved for efficiently. The method is shown to achieve state-of-the-art performance on the UIUC textures, Oxford flowers and Cal- tech 101 datasets.

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Metadata

Authors
Varma, M., & Ray, D.
Venue
2007 IEEE 11th International Conference on Computer Vision
Publisher
IEEE
Published
2007
Pages
1-8
OpenAlex
W2122808326
Cited by
520
References
6
FWCI
46.53
Type
conference paper
Language
en
Open access
closed

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CoChat. (2026). Citation check: Learning The Discriminative Power-Invariance Trade-Off. https://app.cochat.ai/papers/10.1109/iccv.2007.4408875
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Varma, M., & Ray, D. (2007). Learning The Discriminative Power-Invariance Trade-Off. 2007 IEEE 11th International Conference on Computer Vision. https://doi.org/10.1109/iccv.2007.4408875

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