资源论文Perceive Where to Focus: Learning Visibility-aware Part-level Features for Partial Person Re-identification

Perceive Where to Focus: Learning Visibility-aware Part-level Features for Partial Person Re-identification

2019-09-18 | |  64 |   46 |   0

Abstract This paper considers a realistic problem in person reidentifification (re-ID) task, i.e., partial re-ID. Under partial re-ID scenario, the images may contain a partial observation of a pedestrian. If we directly compare a partial pedestrian image with a holistic one, the extreme spatial misalignment signifificantly compromises the discriminative ability of the learned representation. We propose a Visibility-aware Part Model (VPM), which learns to perceive the visibility of regions through self-supervision. The visibility awareness allows VPM to extract region-level features and compare two images with focus on their shared regions (which are visible on both images). VPM gains two-fold benefifit toward higher accuracy for partial re-ID. On the one hand, compared with learning a global feature, VPM learns region-level features and benefifits from fifine-grained information. On the other hand, with visibility awareness, VPM is capable to estimate the shared regions between two images and thus suppresses the spatial misalignment. Experimental results confifirm that our method signifificantly improves the learned representation and the achieved accuracy is on par with the state of the art.

上一篇:Learning to Reduce Dual-level Discrepancy for Infrared-Visible Person Re-identification

下一篇:Unsupervised Person Re-identification by Soft Multilabel Learning

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