Search Results for author: Keqiang Li

Found 27 papers, 13 papers with code

Neural Radiance Field in Autonomous Driving: A Survey

no code implementations22 Apr 2024 Lei He, Leheng Li, Wenchao Sun, Zeyu Han, Yichen Liu, Sifa Zheng, Jianqiang Wang, Keqiang Li

To the best of our knowledge, this is the first survey specifically focused on the applications of NeRF in the Autonomous Driving domain.

3D Reconstruction Autonomous Driving +2

Training Multi-layer Neural Networks on Ising Machine

no code implementations6 Nov 2023 Xujie Song, Tong Liu, Shengbo Eben Li, Jingliang Duan, Wenxuan Wang, Keqiang Li

This paper proposes an Ising learning algorithm to train quantized neural network (QNN), by incorporating two essential techinques, namely binary representation of topological network and order reduction of loss function.

Learning Optimal Robust Control of Connected Vehicles in Mixed Traffic Flow

no code implementations18 Sep 2023 Jie Li, Jiawei Wang, Shengbo Eben Li, Keqiang Li

Connected and automated vehicles (CAVs) technologies promise to attenuate undesired traffic disturbances.

Cloud Control of Connected Vehicle under Bi-directional Time-varying delay: An Application of Predictor-observer Structured Controller

no code implementations5 Sep 2023 Ji-An Pan, Qing Xu, Keqiang Li, Chunying Yang, Jianqiang Wang

This article is devoted to addressing the cloud control of connected vehicles, specifically focusing on analyzing the effect of bi-directional communication-induced delays.

Information Flow Topology in Mixed Traffic: A Comparative Study between "Looking Ahead" and "Looking Behind"

no code implementations4 Sep 2023 Shuai Li, Haotian Zheng, Jiawei Wang, Chaoyi Chen, Qing Xu, Jianqiang Wang, Keqiang Li

In mixed traffic where human-driven vehicles (HDVs) also exist, existing research mostly focuses on "looking ahead" (i. e., the CAVs receive information from preceding vehicles) strategies for CAVs, while recent work reveals that "looking behind" (i. e., the CAVs receive information from their rear vehicles) strategies might provide more possibilities for CAV longitudinal control.

4D Millimeter-Wave Radar in Autonomous Driving: A Survey

no code implementations7 Jun 2023 Zeyu Han, Jiahao Wang, Zikun Xu, Shuocheng Yang, Lei He, Shaobing Xu, Jianqiang Wang, Keqiang Li

In an effort to bridge this gap and stimulate future research, this paper presents an exhaustive survey on the utilization of 4D mmWave radar in autonomous driving.

Autonomous Driving Point Cloud Generation

Evaluate Geometry of Radiance Fields with Low-frequency Color Prior

1 code implementation10 Apr 2023 Qihang Fang, Yafei Song, Keqiang Li, Li Shen, Huaiyu Wu, Gang Xiong, Liefeng Bo

From this insight, given a reconstructed density field and observation images, we design a closed-form method to approximate the color field with low-frequency spherical harmonics, and compute the inverse mean residual color.

3D Reconstruction Novel View Synthesis

Distributed data-driven predictive control for cooperatively smoothing mixed traffic flow

1 code implementation24 Oct 2022 Jiawei Wang, Yingzhao Lian, Yuning Jiang, Qing Xu, Keqiang Li, Colin N. Jones

This algorithm achieves both computation and communication efficiency, as well as trajectory data privacy, through parallel calculation.

LEMMA

GraphFit: Learning Multi-scale Graph-Convolutional Representation for Point Cloud Normal Estimation

1 code implementation23 Jul 2022 Keqiang Li, Mingyang Zhao, Huaiyu Wu, Dong-Ming Yan, Zhen Shen, Fei-Yue Wang, Gang Xiong

We propose a precise and efficient normal estimation method that can deal with noise and nonuniform density for unstructured 3D point clouds.

Surface Normals Estimation

Implementation and Experimental Validation of Data-Driven Predictive Control for Dissipating Stop-and-Go Waves in Mixed Traffic

1 code implementation7 Apr 2022 Jiawei Wang, Yang Zheng, Jianghong Dong, Chaoyi Chen, Mengchi Cai, Keqiang Li, Qing Xu

In this paper, we present the first experimental results of data-driven predictive control for connected and autonomous vehicles (CAVs) in dissipating traffic waves.

Autonomous Vehicles Traffic Prediction

DeeP-LCC: Data-EnablEd Predictive Leading Cruise Control in Mixed Traffic Flow

1 code implementation20 Mar 2022 Jiawei Wang, Yang Zheng, Keqiang Li, Qing Xu

For the control of connected and autonomous vehicles (CAVs), most existing methods focus on model-based strategies.

Autonomous Vehicles LEMMA

Experimental Validation of Multi-lane Formation Control for Connected and Automated Vehicles in Multiple Scenarios

no code implementations1 Dec 2021 Mengchi Cai, Qing Xu, Chunying Yang, Jianghong Dong, Chaoyi Chen, Jiawei Wang, Jianqiang Wang, Keqiang Li

Formation control methods of connected and automated vehicles have been proposed to smoothly switch the structure of vehicular formations in different scenarios.

Multi-vehicle experiment platform: A Digital Twin Realization Method

no code implementations25 Oct 2021 Chunying Yang, Jianghong Dong, Qing Xu, Mengchi Cai, Hongmao Qin, Jianqiang Wang, Keqiang Li

To confirm effectiveness of this method, a prototype system is developed, which consists of sand table testbed, its twin system and cloud.

Self-learned Intelligence for Integrated Decision and Control of Automated Vehicles at Signalized Intersections

no code implementations24 Oct 2021 Yangang Ren, Jianhua Jiang, Dongjie Yu, Shengbo Eben Li, Jingliang Duan, Chen Chen, Keqiang Li

This paper develops the dynamic permutation state representation in the framework of integrated decision and control (IDC) to handle signalized intersections with mixed traffic flows.

Autonomous Driving Decision Making

Data-Driven Predictive Control for Connected and Autonomous Vehicles in Mixed Traffic

no code implementations19 Oct 2021 Jiawei Wang, Yang Zheng, Qing Xu, Keqiang Li

In this paper, instead of relying on a parametric car-following model, we introduce a data-driven predictive control strategy to achieve safe and optimal control for CAVs in mixed traffic.

Autonomous Vehicles

Multi-lane Unsignalized Intersection Cooperation with Flexible Lane Direction based on Multi-vehicle Formation Control

3 code implementations25 Aug 2021 Mengchi Cai, Qing Xu, Chaoyi Chen, Jiawei Wang, Keqiang Li, Jianqiang Wang, Xiangbin Wu

Unsignalized intersection cooperation of connected and automated vehicles (CAVs) is able to eliminate green time loss of signalized intersections and improve traffic efficiency.

Leading Cruise Control in Mixed Traffic Flow: System Modeling, Controllability, and String Stability

1 code implementation8 Dec 2020 Jiawei Wang, Yang Zheng, Chaoyi Chen, Qing Xu, Keqiang Li

Most existing strategies for CAVs' longitudinal control focus on downstream traffic conditions, but neglect the impact of CAVs' behaviors on upstream traffic flow.

Autonomous Vehicles

Cooperative Formation of Autonomous Vehicles in Mixed Traffic Flow: Beyond Platooning

no code implementations8 Sep 2020 Keqiang Li, Jiawei Wang, Yang Zheng

In mixed traffic flow consisting of AVs and human-driven vehicles (HDVs), the prevailing platooning of multiple AVs is not the only choice for cooperative formation.

Autonomous Vehicles

Leading Cruise Control in Mixed Traffic Flow

1 code implementation23 Jul 2020 Jiawei Wang, Yang Zheng, Chaoyi Chen, Qing Xu, Keqiang Li

Numerical studies confirm the potential of LCC to strengthen the capability of CAVs in suppressing traffic instabilities and smoothing traffic flow.

Systems and Control Systems and Control Optimization and Control

CASNet: Common Attribute Support Network for image instance and panoptic segmentation

no code implementations17 Jul 2020 Xiaolong Liu, Yuqing Hou, Anbang Yao, Yurong Chen, Keqiang Li

Given the insight that pixels belonging to one instance have one or more common attributes of current instance, we bring up an one-stage instance segmentation network named Common Attribute Support Network (CASNet), which realizes instance segmentation by predicting and clustering common attributes.

Attribute Clustering +5

Distributed Model Predictive Control for Heterogeneous V ehicle Platoons Under Unidirectional Topologies

no code implementations3 Mar 2017 Y ang Zheng, Shengbo Eben Li, Keqiang Li, Francesco Borrelli

This paper presents a distributed model predictive control (DMPC) algorithm for heterogeneous vehicle platoons with unidirectional topologies and a p r i o r i unknown desired set point.

Model Predictive Control

Combining Deep Reinforcement Learning and Safety Based Control for Autonomous Driving

1 code implementation1 Dec 2016 Xi Xiong, Jianqiang Wang, Fang Zhang, Keqiang Li

Combining deep reinforcement learning and safety based control can get good performance for self-driving and collision avoidance.

Robotics

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