Mean BoF per Quadrant - Simple and Effective Way to Embed Spatial Information in Bag of Features

Joan Sosa-Garcia, Francesca Odone

2015

Abstract

This paper proposes a new approach for embedding spatial information into a Bag of Features image descriptor, primarily meant for image retrieval. The method is conceptually related to Spatial Pyramids but instead of requiring fixed and arbitrary sub-regions where to compute region-based BoF, it relies on an adaptive procedure based on multiple partitioning of the image in four quadrants (the NE, NW, SE, SW regions of the image). To obtain a compact and efficient description, all BoF related to the same quadrant are averaged, obtaining four descriptors which capture the dominant structures of the main areas of the image, and then concatenated. The computational cost of the method is the same as BoF and the size of the descriptor comparable to BoF, but the amount of spatial information retained is considerable, as shown in the experimental analysis carried out on benchmarks.

Paper Citation

in Harvard Style

Sosa-Garcia J. and Odone F. (2015). Mean BoF per Quadrant - Simple and Effective Way to Embed Spatial Information in Bag of Features . In Proceedings of the 10th International Conference on Computer Vision Theory and Applications - Volume 2: VISAPP, (VISIGRAPP 2015) ISBN 978-989-758-090-1, pages 297-304. DOI: 10.5220/0005281002970304

in Bibtex Style

@conference{visapp15,
author={Joan Sosa-Garcia and Francesca Odone},
title={Mean BoF per Quadrant - Simple and Effective Way to Embed Spatial Information in Bag of Features},
booktitle={Proceedings of the 10th International Conference on Computer Vision Theory and Applications - Volume 2: VISAPP, (VISIGRAPP 2015)},
year={2015},
pages={297-304},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0005281002970304},
isbn={978-989-758-090-1},
}

in EndNote Style

TY - CONF
JO - Proceedings of the 10th International Conference on Computer Vision Theory and Applications - Volume 2: VISAPP, (VISIGRAPP 2015)
TI - Mean BoF per Quadrant - Simple and Effective Way to Embed Spatial Information in Bag of Features
SN - 978-989-758-090-1
AU - Sosa-Garcia J.
AU - Odone F.
PY - 2015
SP - 297
EP - 304
DO - 10.5220/0005281002970304