Search Results for author: Yongtuo Liu

Found 6 papers, 3 papers with code

Graph Switching Dynamical Systems

1 code implementation1 Jun 2023 Yongtuo Liu, Sara Magliacane, Miltiadis Kofinas, Efstratios Gavves

Dynamical systems with complex behaviours, e. g. immune system cells interacting with a pathogen, are commonly modelled by splitting the behaviour into different regimes, or modes, each with simpler dynamics, and then learning the switching behaviour from one mode to another.

Object Time Series

Glance to Count: Learning to Rank with Anchors for Weakly-supervised Crowd Counting

no code implementations29 May 2022 Zheng Xiong, Liangyu Chai, Wenxi Liu, Yongtuo Liu, Sucheng Ren, Shengfeng He

To enable training under this new setting, we convert the crowd count regression problem to a ranking potential prediction problem.

Crowd Counting Learning-To-Rank

NFormer: Robust Person Re-identification with Neighbor Transformer

1 code implementation CVPR 2022 Haochen Wang, Jiayi Shen, Yongtuo Liu, Yan Gao, Efstratios Gavves

To tackle this issue, we propose a Neighbor Transformer Network, or NFormer, which explicitly models interactions across all input images, thus suppressing outlier features and leading to more robust representations overall.

Person Re-Identification Representation Learning

Fine-grained Domain Adaptive Crowd Counting via Point-derived Segmentation

no code implementations6 Aug 2021 Yongtuo Liu, Dan Xu, Sucheng Ren, Hanjie Wu, Hongmin Cai, Shengfeng He

To this end, we propose to untangle \emph{domain-invariant} crowd and \emph{domain-specific} background from crowd images and design a fine-grained domain adaption method for crowd counting.

Crowd Counting Domain Adaptation +1

Reducing Spatial Labeling Redundancy for Semi-supervised Crowd Counting

no code implementations6 Aug 2021 Yongtuo Liu, Sucheng Ren, Liangyu Chai, Hanjie Wu, Jing Qin, Dan Xu, Shengfeng He

In this way, we can transfer the original spatial labeling redundancy caused by individual similarities to effective supervision signals on the unlabeled regions.

Crowd Counting

Reciprocal Transformations for Unsupervised Video Object Segmentation

1 code implementation CVPR 2021 Sucheng Ren, Wenxi Liu, Yongtuo Liu, Haoxin Chen, Guoqiang Han, Shengfeng He

Additionally, to exclude the information of the moving background objects from motion features, our transformation module enables to reciprocally transform the appearance features to enhance the motion features, so as to focus on the moving objects with salient appearance while removing the co-moving outliers.

Object Optical Flow Estimation +3

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