Comparative Study of the Behavior of Feature Reduction Methods in Person Re-identification Task

Bahram Lavi, Mehdi Fatan Serj, Domenec Puig Valls

2018

Abstract

One of the goals of person re-identification systems is to support video-surveillance operators and forensic investigators to find an individual of interest in videos acquired by a network of non-overlapping cameras. This is attained by sorting images of previously observed individuals for decreasing values of their similarity with a given probe individual. Existing appearance descriptors, together with their similarity measures, are mostly aimed at improving ranking quality. Many of these descriptors generate a high feature vector represented as an image signature. To tackle person re-identification in real-world scenario the processing time will be crucial, so an individual of interest within a network camera should be found out swiftly. We therefore study some feature reduction methods to achieve a significant trade-off between processing time and ranking quality. Although, observing some redundancies on the generated patterns of a given descriptor are not deniable, we suggest to employ a feature reduction method before use of it in real-world scenarios. In particular, we have tested three reduction methods: PCA, KPCA, and Isomap. We then evaluate our study on two benchmark data sets (VIPeR, and i-LIDS), by using two state-of-the-art descriptors on person re-identification task. The results presented in this paper, after applying the feature reduction step, are very promising in terms of recognition rate.

Paper Citation

in Harvard Style

Lavi B., Serj M. and Valls D. (2018). Comparative Study of the Behavior of Feature Reduction Methods in Person Re-identification Task.In Proceedings of the 7th International Conference on Pattern Recognition Applications and Methods - Volume 1: ICPRAM, ISBN 978-989-758-276-9, pages 614-621. DOI: 10.5220/0006717906140621

in Bibtex Style

@conference{icpram18,
author={Bahram Lavi and Mehdi Fatan Serj and Domenec Puig Valls},
title={Comparative Study of the Behavior of Feature Reduction Methods in Person Re-identification Task},
booktitle={Proceedings of the 7th International Conference on Pattern Recognition Applications and Methods - Volume 1: ICPRAM,},
year={2018},
pages={614-621},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0006717906140621},
isbn={978-989-758-276-9},
}

in EndNote Style

TY - CONF

JO - Proceedings of the 7th International Conference on Pattern Recognition Applications and Methods - Volume 1: ICPRAM,
TI - Comparative Study of the Behavior of Feature Reduction Methods in Person Re-identification Task
SN - 978-989-758-276-9
AU - Lavi B.
AU - Serj M.
AU - Valls D.
PY - 2018
SP - 614
EP - 621
DO - 10.5220/0006717906140621