Search Results for author: Pei Lv

Found 18 papers, 2 papers with code

Context-Aware Block Net for Small Object Detection

no code implementations IEEE Transactions on Cybernetics 2023 Lisha Cui, Pei Lv, Xiaoheng Jiang, Zhimin Gao, Bing Zhou, Luming Zhang, Ling Shao, Mingliang Xu

State-of-the-art object detectors usually progressively downsample the input image until it is represented by small feature maps, which loses the spatial information and compromises the representation of small objects.

Object object-detection +2

Focal and Global Spatial-Temporal Transformer for Skeleton-based Action Recognition

no code implementations6 Oct 2022 Zhimin Gao, Peitao Wang, Pei Lv, Xiaoheng Jiang, Qidong Liu, Pichao Wang, Mingliang Xu, Wanqing Li

Besides, these methods directly calculate the pair-wise global self-attention equally for all the joints in both the spatial and temporal dimensions, undervaluing the effect of discriminative local joints and the short-range temporal dynamics.

Action Recognition Skeleton Based Action Recognition

D2-TPred: Discontinuous Dependency for Trajectory Prediction under Traffic Lights

1 code implementation21 Jul 2022 Yuzhen Zhang, Wentong Wang, Weizhi Guo, Pei Lv, Mingliang Xu, Wei Chen, Dinesh Manocha

We present a trajectory prediction approach with respect to traffic lights, D2-TPred, which uses a spatial dynamic interaction graph (SDG) and a behavior dependency graph (BDG) to handle the problem of discontinuous dependency in the spatial-temporal space.

Trajectory Prediction

Dynamic Hypergraph Convolutional Networks for Skeleton-Based Action Recognition

no code implementations20 Dec 2021 Jinfeng Wei, Yunxin Wang, Mengli Guo, Pei Lv, Xiaoshan Yang, Mingliang Xu

Graph convolutional networks (GCNs) based methods have achieved advanced performance on skeleton-based action recognition task.

Action Recognition Skeleton Based Action Recognition

SSAGCN: Social Soft Attention Graph Convolution Network for Pedestrian Trajectory Prediction

no code implementations5 Dec 2021 Pei Lv, Wentong Wang, Yunxin Wang, Yuzhen Zhang, Mingliang Xu, Changsheng Xu

In detail, when modeling social interaction, we propose a new \emph{social soft attention function}, which fully considers various interaction factors among pedestrians.

Autonomous Driving Pedestrian Trajectory Prediction +1

Contrastive Proposal Extension with LSTM Network for Weakly Supervised Object Detection

no code implementations14 Oct 2021 Pei Lv, Suqi Hu, Tianran Hao

Inspired by the habit of observing things by the human, we propose a new method by comparing the initial proposals and the extension ones to optimize those initial proposals.

Multiple Instance Learning object-detection +1

User-Guided Personalized Image Aesthetic Assessment based on Deep Reinforcement Learning

no code implementations14 Jun 2021 Pei Lv, Jianqi Fan, Xixi Nie, WeiMing Dong, Xiaoheng Jiang, Bing Zhou, Mingliang Xu, Changsheng Xu

This framework leverages user interactions to retouch and rank images for aesthetic assessment based on deep reinforcement learning (DRL), and generates personalized aesthetic distribution that is more in line with the aesthetic preferences of different users.

Image Enhancement reinforcement-learning +1

Emotional Contagion-Aware Deep Reinforcement Learning for Antagonistic Crowd Simulation

no code implementations29 Apr 2021 Pei Lv, Qingqing Yu, Boya Xu, Chaochao Li, Bing Zhou, Mingliang Xu

In this paper, we propose an Emotional contagion-aware Deep reinforcement learning model for Antagonistic Crowd Simulation (ACSED).

Decision Making reinforcement-learning +1

Agent-Based Campus Novel Coronavirus Infection and Control Simulation

no code implementations22 Feb 2021 Pei Lv, Quan Zhang, Boya Xu, Ran Feng, Chaochao Li, Junxiao Xue, Bing Zhou, Mingliang Xu

Corona Virus Disease 2019 (COVID-19), due to its extremely high infectivity, has been spreading rapidly around the world and bringing huge influence to socioeconomic development as well as people's daily life.

Social and Information Networks Physics and Society Populations and Evolution

Personality-Aware Probabilistic Map for Trajectory Prediction of Pedestrians

no code implementations1 Nov 2019 Chaochao Li, Pei Lv, Mingliang Xu, Xinyu Wang, Dinesh Manocha, Bing Zhou, Meng Wang

We update this map dynamically based on the agents in the environment and prior trajectory of a pedestrian.

Trajectory Prediction

Multi-scale discriminative Region Discovery for Weakly-Supervised Object Localization

no code implementations24 Sep 2019 Pei Lv, Haiyu Yu, Junxiao Xue, Junjin Cheng, Lisha Cui, Bing Zhou, Mingliang Xu, Yi Yang

On ILSVRC 2016, the proposed method yields the Top-1 localization error of 48. 65\%, which outperforms previous results by 2. 75\%.

Weakly-Supervised Object Localization

Abnormal Event Detection and Location for Dense Crowds using Repulsive Forces and Sparse Reconstruction

no code implementations21 Aug 2018 Pei Lv, Shunhua Liu, Mingliang Xu, Bing Zhou

This paper proposes a method based on repulsive forces and sparse reconstruction for the detection and location of abnormal events in crowded scenes.

Event Detection

MDSSD: Multi-scale Deconvolutional Single Shot Detector for Small Objects

1 code implementation18 May 2018 Lisha Cui, Rui Ma, Pei Lv, Xiaoheng Jiang, Zhimin Gao, Bing Zhou, Mingliang Xu

The performance of small object detection, however, is still less than satisfactory because of the deficiency of semantic information on shallow feature maps.

Object object-detection +1

USAR: an Interactive User-specific Aesthetic Ranking Framework for Images

no code implementations3 May 2018 Pei Lv, Meng Wang, Yongbo Xu, Ze Peng, Junyi Sun, Shimei Su, Bing Zhou, Mingliang Xu

When assessing whether an image is of high or low quality, it is indispensable to take personal preference into account.

Bi-directional Graph Structure Information Model for Multi-Person Pose Estimation

no code implementations2 May 2018 Jing Wang, Ze Peng, Pei Lv, Junyi Sun, Bing Zhou, Mingliang Xu

The first branch predicts the confidence maps of joints and uses a geometrical transform kernel to propagate information between neighboring joints at the confidence level.

Multi-Person Pose Estimation

Depth Information Guided Crowd Counting for Complex Crowd Scenes

no code implementations3 Mar 2018 Mingliang Xu, Zhaoyang Ge, Xiaoheng Jiang, Gaoge Cui, Pei Lv, Bing Zhou, Changsheng Xu

DigCrowd first uses the depth information of an image to segment the scene into a far-view region and a near-view region.

Crowd Counting

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