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Total Recall: Automatic Query Expansion with a Generative Feature Model for Object Retrieval

Chum, Ondrej, Philbin, James, Sivic, Josef, Isard, Michael, Zisserman, Andrew·2007·2007 IEEE 11th International Conference on Computer Vision

Abstract

Given a query image of an object, our objective is to retrieve all instances of that object in a large (1M+) image database. We adopt the bag-of-visual-words architecture which has proven successful in achieving high precision at low recall. Unfortunately, feature detection and quantization are noisy processes and this can result in variation in the particular visual words that appear in different images of the same object, leading to missed results. In the text retrieval literature a standard method for improving performance is query expansion. A number of the highly ranked documents from the original query are reissued as a new query. In this way, additional relevant terms can be added to the query. This is a form of blind relevance feedback and it can fail if `outlier' (false positive) documents are included in the reissued query. In this paper we bring query expansion into the visual domain via two novel contributions. Firstly, strong spatial constraints between the query image and each result allow us to accurately verify each return, suppressing the false positives which typically ruin text-based query expansion. Secondly, the verified images can be used to learn a latent feature model to enable the controlled construction of expanded queries. We illustrate these ideas on the 5000 annotated image Oxford building database together with more than 1M Flickr images. We show that the precision is substantially boosted, achieving total recall in many cases.

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Metadata

Authors
Chum, O., Philbin, J., Sivic, J., Isard, M., & Zisserman, A.
Venue
2007 IEEE 11th International Conference on Computer Vision
Publisher
IEEE
Published
2007
Pages
1-8
OpenAlex
W2100398441
Cited by
859
References
4
FWCI
30.93
Type
conference paper
Language
en
Open access
closed

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