Title
Revisiting k-Reciprocal Distance Re-Ranking for Skeleton-Based Person Re-Identification
Abstract
Person re-identification (re-ID) as a retrieval task often utilizes a re-ranking model to improve performance. Existing re-ranking methods are typically designed for conventional person re-ID with RGB images, while skeleton representation re-ranking for skeleton-based person re-ID still remains to be explored. To fill this gap, we revisit the k -reciprocal distance re-ranking model in this letter, and propose a generic re-ranking method that exploits the salient skeleton features to perform k -reciprocal distance encoding for skeleton-based person re-ID re-ranking. In particular, we devise the skeleton sequence pooling to aggregate the most salient features of skeletons within a sequence, and combine both original Euclidean distance and k -reciprocal distance to re-rank the skeleton sequence representations for person re-ID. Furthermore, we propose the context-based Rank-1 voting that jointly exploits the initial ranking list and re-ranking list to vote for the top candidate to enhance the Rank-1 matching. Extensive experiments on three public benchmarks demonstrate that our approach can effectively re-rank different state-of-the-art skeleton representations and significantly improve their person re-ID performance.
Year
DOI
Venue
2022
10.1109/LSP.2022.3212634
IEEE SIGNAL PROCESSING LETTERS
Keywords
DocType
Volume
Skeleton-based person re-identification, reranking, k-reciprocal distance, skeleton sequence pooling.
Journal
29
ISSN
Citations 
PageRank 
1070-9908
0
0.34
References 
Authors
0
3
Name
Order
Citations
PageRank
Haocong Rao100.34
Yuan Li200.34
Chunyan Miao32307195.72