  Most video surveillance systems use both RGB and infrared cameras, making it
a vital technique to re-identify a person cross the RGB and infrared
modalities. This task can be challenging due to both the cross-modality
variations caused by heterogeneous images in RGB and infrared, and the
intra-modality variations caused by the heterogeneous human poses, camera
views, light brightness, etc. To meet these challenges a novel feature learning
framework, HPILN, is proposed. In the framework existing single-modality
re-identification models are modified to fit for the cross-modality scenario,
following which specifically designed hard pentaplet loss and identity loss are
used to improve the performance of the modified cross-modality
re-identification models. Based on the benchmark of the SYSU-MM01 dataset,
extensive experiments have been conducted, which show that the proposed method
outperforms all existing methods in terms of Cumulative Match Characteristic
curve (CMC) and Mean Average Precision (MAP).
