GEFF: Improving Any Clothes-Changing Person ReID Model using Gallery Enrichment with Face Features

• URL: http://arxiv.org/abs/2211.13807v2
• Date: Tue, 21 Nov 2023 18:47:51 GMT
• Title: GEFF: Improving Any Clothes-Changing Person ReID Model using Gallery Enrichment with Face Features
• Authors: Daniel Arkushin, Bar Cohen, Shmuel Peleg, Ohad Fried
• Abstract summary: In Clothes-Changing Re-Identification (CC-ReID) problem, given a query sample of a person, the goal is to determine the correct identity based on a labeled gallery in which the person appears in different clothes. Several models tackle this challenge by extracting clothes-independent features. As clothing-related features are often dominant features in the data, we propose a new process we call Gallery Enrichment.
• Score: 11.189236254478057
• License: http://creativecommons.org/licenses/by-sa/4.0/
• Abstract: In the Clothes-Changing Re-Identification (CC-ReID) problem, given a query sample of a person, the goal is to determine the correct identity based on a labeled gallery in which the person appears in different clothes. Several models tackle this challenge by extracting clothes-independent features. However, the performance of these models is still lower for the clothes-changing setting compared to the same-clothes setting in which the person appears with the same clothes in the labeled gallery. As clothing-related features are often dominant features in the data, we propose a new process we call Gallery Enrichment, to utilize these features. In this process, we enrich the original gallery by adding to it query samples based on their face features, using an unsupervised algorithm. Additionally, we show that combining ReID and face feature extraction modules alongside an enriched gallery results in a more accurate ReID model, even for query samples with new outfits that do not include faces. Moreover, we claim that existing CC-ReID benchmarks do not fully represent real-world scenarios, and propose a new video CC-ReID dataset called 42Street, based on a theater play that includes crowded scenes and numerous clothes changes. When applied to multiple ReID models, our method (GEFF) achieves an average improvement of 33.5% and 6.7% in the Top-1 clothes-changing metric on the PRCC and LTCC benchmarks. Combined with the latest ReID models, our method achieves new SOTA results on the PRCC, LTCC, CCVID, LaST and VC-Clothes benchmarks and the proposed 42Street dataset.

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