TY  - JOUR
AU  - Svebor Karaman
AU  - Giuseppe Lisanti
AU  - Andrew Bagdanov
AU  - Alberto del Bimbo
PY  - 2014//
TI  - Leveraging local neighborhood topology for large scale person re-identification
T2  - PR
JO  - Pattern Recognition
SP  - 3767–3778
VL  - 47
IS  - 12
KW  - Re-identification
KW  - Conditional random field
KW  - Semi-supervised
KW  - ETHZ
KW  - CAVIAR
KW  - 3DPeS
KW  - CMV100
N2  - In this paper we describe a semi-supervised approach to person re-identification that combines discriminative models of person identity with a Conditional Random Field (CRF) to exploit the local manifold approximation induced by the nearest neighbor graph in feature space. The linear discriminative models learned on few gallery images provides coarse separation of probe images into identities, while a graph topology defined by distances between all person images in feature space leverages local support for label propagation in the CRF. We evaluate our approach using multiple scenarios on several publicly available datasets, where the number of identities varies from 28 to 191 and the number of images ranges between 1003 and 36 171. We demonstrate that the discriminative model and the CRF are complementary and that the combination of both leads to significant improvement over state-of-the-art approaches. We further demonstrate how the performance of our approach improves with increasing test data and also with increasing amounts of additional unlabeled data.
L1  - http://refbase.cvc.uab.es/files/KLB2014a.pdf
UR  - http://dx.doi.org/doi:10.1016/j.patcog.2014.06.003
N1  - LAMP; 601.240; 600.079
ID  - Svebor Karaman2014
ER  -