no code implementations • 6 Jun 2025 • Yizhu Zhao, Li Yu, Lianzheng Shi, Jianhua Zhang, Guangyi Liu
Additionally, it demonstrates few-shot generalization on a real-world dataset, achieving 72. 7% Top-1 accuracy and 92. 4% Top-3 accuracy with only 30% of the dataset, outperforming the existing small models by over 15%.
no code implementations • 27 May 2025 • Yuxiang Zhang, Jianhua Zhang, Xidong Hu, Jiwei Zhang, Hongbo Xing, Huiwen Gong, Shilin Luo, Yifeng Xiong, Li Yu, Zhiqing Yuan, Guangyi Liu, Tao Jiang
Accurate radar cross section (RCS) modeling is crucial for characterizing target scattering and improving the precision of Integrated Sensing and Communication (ISAC) channel modeling.
no code implementations • 12 May 2025 • Yuxiang Zhang, Jianhua Zhang, Zhengfu Zhou, Huiwen Gong, Hongbo Xing, Zhiqiang Yuan, Lei Tian, Li Yu, Guangyi Liu, Tao Jiang
RIS can be categorized into multiple types based on their reflective/transmissive modes and polarization control capabilities, all of which are expected to be widely deployed in practical environments.
no code implementations • 19 Apr 2025 • Li Yu, Xuanzhe Sun, Wei Zhou, Moncef Gabbouj
Therefore, we attempt to simultaneously analyze visual, auditory, and textual modalities in this paper, and propose TAVDiff, a Text-Audio-Visual-conditioned Diffusion Model for video saliency prediction.
no code implementations • 16 Apr 2025 • Li Yu, Situo Wang, Wei Zhou, Moncef Gabbouj
Inspired by the dual-stream theory of the human visual system (HVS) - where the ventral stream is responsible for object recognition and detail analysis, while the dorsal stream focuses on spatial relationships and motion perception - an increasing number of video quality assessment (VQA) works built upon this framework are proposed.
no code implementations • 9 Apr 2025 • Li Yu, Zhihui Li, Chao Yao, Jimin Xiao, Moncef Gabbouj
Neural representations for video (NeRV) have gained considerable attention for their strong performance across various video tasks.
no code implementations • 8 Apr 2025 • Zhongyao Hu, Bo Chen, Chao Sun, Li Yu
For the periodic time-varying case, it is proved by a monotonicity analysis method that CI-based distributed Kalman filtering converges periodically for any initial condition.
no code implementations • 13 Mar 2025 • Nannan Wu, Zengqiang Yan, Nong Sang, Li Yu, Chang Wen Chen
In this paper, we attribute this competition to the homogeneity in loss patterns exhibited by rare and mislabeled data clients, preventing existing loss-based fair and robust FL methods from effectively distinguishing and handling these two distinct client types.
1 code implementation • 12 Mar 2025 • Nannan Wu, Zhuo Kuang, Zengqiang Yan, Ping Wang, Li Yu
Existing fair federated learning methods have demonstrated some effectiveness in solving this problem by aligning a single 0th- or 1st-order state of convergence (e. g., training loss or sharpness).
no code implementations • 25 Feb 2025 • Yuchen Zhang, Bo Chen, Zheming Wang, Wen-An Zhang, Li Yu, Lei Guo
To reduce the conservatism of the DZFE with optimal parameters, we enhance our approach with an improved zonotope fusion criterion, which further improves the estimation performance of this DZFE by constructing tight strips for the intersection.
no code implementations • 20 Feb 2025 • Li Yu, Yinghe Miao, Jianhua Zhang, Shaoyi Liu, Yuxiang Zhang, Guangyi Liu
As a virtual, synchronized replica of physical network, the digital twin network (DTN) is envisioned to sense, predict, optimize and manage the intricate wireless technologies and architectures brought by 6G.
1 code implementation • 17 Dec 2024 • Dongyue Wu, Zilin Guo, Li Yu, Nong Sang, Changxin Gao
Within this framework, we introduce a spatial-aware redundancy metric based on feature maps, thus endowing the pruning process with location sensitivity to better adapt to pruning segmentation networks.
no code implementations • 13 Dec 2024 • Qibo Chen, Weizhong Jin, Jianyue Ge, Mengdi Liu, Yuchao Yan, Jian Jiang, Li Yu, Xuanjiang Guo, Shuchang Li, Jianzhong Chen
In addition to text prompts, we have designed two practical concept prompt generation methods, visual prompt and optimized prompt, to extract abstract concepts through concrete visual examples and stably reduce alignment bias in downstream tasks.
Ranked #1 on
Zero-Shot Object Detection
on LVIS v1.0 val
(using extra training data)
no code implementations • 10 Dec 2024 • Kai Wang, Li Yu, Jianhua Zhang, Yixuan Tian, Eryu Guo, Guangyi Liu
The stability and reliability of wireless data transmission in vehicular networks face significant challenges due to the high dynamics of path loss caused by the complexity of rapidly changing environments.
1 code implementation • CVPR 2025 • Huaxin Zhang, Xiaohao Xu, Xiang Wang, Jialong Zuo, Xiaonan Huang, Changxin Gao, Shanjun Zhang, Li Yu, Nong Sang
For efficient anomaly detection in long videos, we propose the Anomaly-focused Temporal Sampler (ATS).
no code implementations • 18 Nov 2024 • Li Yu, Xuanzhe Sun, Pan Gao, Moncef Gabbouj
Audio data, often synchronized with video frames, plays a crucial role in guiding the audience's visual attention.
no code implementations • 12 Nov 2024 • Li Yu
First, existing methods have not explicitly exploited texture details, which significantly influence the image quality.
no code implementations • 11 Nov 2024 • Li Yu, Zhihui Li, Jimin Xiao, Moncef Gabbouj
Next, we design the High-Frequency Feature Modulation (HFM) block, which leverages the extracted high-frequency embeddings to enhance the fitting process of the decoder.
no code implementations • 10 Nov 2024 • Zhongyao Hu, Bo Chen, Jianzheng Wang, Daniel W. C. Ho, Wen-An Zhang, Li Yu
Then, the distributed estimator is proved to be stable if the DMRE remains uniformly bounded.
no code implementations • 17 Oct 2024 • Li Yu, Lianzheng Shi, Jianhua Zhang, Jialin Wang, Zhen Zhang, Yuxiang Zhang, Guangyi Liu
In practice, we also establish a ChannelGPT prototype to generate high-fidelity channel data for varied scenarios to validate the accuracy and generalization ability based on environment intelligence.
no code implementations • 28 Sep 2024 • Jianhua Zhang, Yichen Cai, Li Yu, Zhen Zhang, Yuxiang Zhang, Jialin Wang, Tao Jiang, Liang Xia, Ping Zhang
The air interface technology plays a crucial role in optimizing the communication quality for users.
no code implementations • 11 Sep 2024 • Li Yu, Hongchao Zhong, Longkun Zou, Ke Chen, Pan Gao
Recent progress of semantic point clouds analysis is largely driven by synthetic data (e. g., the ModelNet and the ShapeNet), which are typically complete, well-aligned and noisy free.
1 code implementation • 25 Aug 2024 • Chaowei Chen, Li Yu, Shiquan Min, Shunfang Wang
State Space Models (SSMs), especially Mamba, have shown great promise in medical image segmentation due to their ability to model long-range dependencies with linear computational complexity.
no code implementations • 13 Aug 2024 • Lianzheng Shi, Jianhua Zhang, Li Yu, Yuxiang Zhang, Zhen Zhang, Yichen Cai, Guangyi Liu
Finally, a CNN-based channel prediction network is designed to predict the complete CSI, using the environmental feature map and partial CSI.
1 code implementation • 20 Jul 2024 • Junjie Shi, Caozhi Shang, Zhaobin Sun, Li Yu, Xin Yang, Zengqiang Yan
In this paper, we, for the first time, formulate such a challenging setting and propose Preference-Aware Self-diStillatION (PASSION) for incomplete multi-modal medical image segmentation under imbalanced missing rates.
1 code implementation • 2 Jul 2024 • Yangyang Xiang, Nannan Wu, Li Yu, Xin Yang, Kwang-Ting Cheng, Zengqiang Yan
We begin by evaluating the completeness of annotations at the client level using a designed indicator.
1 code implementation • 27 Jun 2024 • Zhaobin Sun, Nannan Wu, Junjie Shi, Li Yu, Xin Yang, Kwang-Ting Cheng, Zengqiang Yan
Experiments on two publicly-available medical datasets validate the superiority of FedMLP against the state-of-the-art both federated semi-supervised and noisy label learning approaches under task heterogeneity.
no code implementations • 15 Jun 2024 • Zhongyao Hu, Bo Chen, Pindi Weng, Jianzheng Wang, Li Yu
A linear encryption scheme is utilized, which first linearly transforms innovation via an encryption matrix and then encrypts some components of the transformed innovation.
no code implementations • 5 May 2024 • Yinghe Miao, Li Yu, Yuxiang Zhang, Hongbo Xing, Jianhua Zhang
Interestingly, a dynamic ray tracing (DRT) approach for channel prediction has recently been proposed, which utilizes the results of traditional RT to extrapolate the multipath geometry evolution.
no code implementations • 27 Apr 2024 • Di wu, Shicai Fan, Xue Zhou, Li Yu, Yuzhong Deng, Jianxiao Zou, Baihong Lin
In MDPS, the problem of normal image reconstruction is mathematically modeled as multiple diffusion posterior sampling for normal images based on the devised masked noisy observation model and the diffusion-based normal image prior under Bayesian framework.
1 code implementation • 27 Apr 2024 • Nannan Wu, Zhuo Kuang, Zengqiang Yan, Li Yu
In this study, we pioneer the identification and formulation of this new fairness challenge within the context of the imaging quality shift.
no code implementations • 22 Apr 2024 • Qi Zhengyang, Liu Zijing, Zhang Jiying, Cao He, Li Yu
Due to the vast design space of molecules, generating molecules conditioned on a specific sub-structure relevant to a particular function or therapeutic target is a crucial task in computer-aided drug design.
1 code implementation • 21 Apr 2024 • Kang You, Kai Liu, Li Yu, Pan Gao, Dandan Ding
Despite considerable progress being achieved in point cloud geometry compression, there still remains a challenge in effectively compressing large-scale scenes with sparse surfaces.
1 code implementation • 20 Mar 2024 • Xian lin, Yangyang Xiang, Zhehao Wang, Kwang-Ting Cheng, Zengqiang Yan, Li Yu
Specifically, based on SAM, SAMCT is further equipped with a U-shaped CNN image encoder, a cross-branch interaction module, and a task-indicator prompt encoder.
no code implementations • 19 Mar 2024 • Heng Wang, Jianhua Zhang, Gaofeng Nie, Li Yu, Zhiqiang Yuan, Tongjie Li, Jialin Wang, Guangyi Liu
Digital twin channel (DTC) is the real-time mapping of a wireless channel from the physical world to the digital world, which is expected to provide significant performance enhancements for the sixth-generation (6G) air-interface design.
no code implementations • 8 Feb 2024 • Yuxin Xie, Li Yu, Farhad Pakdaman, Moncef Gabbouj
Noisy images are a challenge to image compression algorithms due to the inherent difficulty of compressing noise.
no code implementations • 5 Feb 2024 • Li Yu, Yanjun Gao, Farhad Pakdaman, Moncef Gabbouj
In response to these challenges, we propose a panoramic image inpainting framework that consists of a Face Generator, a Cube Generator, a side branch, and two discriminators.
1 code implementation • 20 Dec 2023 • Nannan Wu, Zhaobin Sun, Zengqiang Yan, Li Yu
Specifically, noise estimation at each client is accomplished through the Gaussian mixture model and then incorporated into model aggregation in a layer-wise manner to up-weight high-quality clients.
no code implementations • 14 Dec 2023 • Qibo Chen, Weizhong Jin, Shuchang Li, Mengdi Liu, Li Yu, Jian Jiang, Xiaozheng Wang
Text prompts are crucial for generalizing pre-trained open-set object detection models to new categories.
no code implementations • 8 Oct 2023 • Ziqiao Shang, Li Yu
Recently how to introduce large amounts of unlabeled facial images in the wild into supervised Facial Action Unit (AU) detection frameworks has become a challenging problem.
1 code implementation • 13 Sep 2023 • Xian lin, Yangyang Xiang, Li Yu, Zengqiang Yan
End-to-end medical image segmentation is of great value for computer-aided diagnosis dominated by task-specific models, usually suffering from poor generalization.
1 code implementation • 9 Sep 2023 • Xian lin, Zengqiang Yan, Xianbo Deng, Chuansheng Zheng, Li Yu
Following CSA, 2D convolution is utilized for feature refinement through CFFN.
no code implementations • 6 Sep 2023 • Tianchi Cai, Jiyan Jiang, Wenpeng Zhang, Shiji Zhou, Xierui Song, Li Yu, Lihong Gu, Xiaodong Zeng, Jinjie Gu, Guannan Zhang
We further show that this method is guaranteed to converge to the optimal policy, which cannot be achieved by previous value-based reinforcement learning methods for marketing budget allocation.
no code implementations • 14 Jun 2023 • Tong Li, Li Yu, Yibo Ma, Tong Duan, Wenzhen Huang, Yan Zhou, Depeng Jin, Yong Li, Tao Jiang
We show that the decline in carbon efficiency leads to a carbon efficiency trap, estimated to cause additional carbon emissions of 23. 82 +- 1. 07 megatons in China.
no code implementations • 3 Jun 2023 • Zibing Shen, Jianhua Zhang, Li Yu, Yuxiang Zhang, Zhen Zhang, Xidong Hu
A common and accurate dataset is essential for the research of AI communication.
1 code implementation • IEEE Signal Processing Letters 2023 • Li Yu, Junyang Li, Farhad Pakdaman, Miaogen Ling, Moncef Gabbouj
No-Reference Image Quality Assessment aims to evaluate the perceptual quality of an image, according to human perception.
3 code implementations • 9 May 2023 • Nannan Wu, Li Yu, Xuefeng Jiang, Kwang-Ting Cheng, Zengqiang Yan
Federated noisy label learning (FNLL) is emerging as a promising tool for privacy-preserving multi-source decentralized learning.
no code implementations • 7 May 2023 • Zhengqin Li, Li Yu, Mikhail Okunev, Manmohan Chandraker, Zhao Dong
For training, we significantly enhance the OpenRooms public dataset of photorealistic synthetic indoor scenes with around 360K HDR environment maps of much higher resolution and 38K video sequences, rendered with GPU-based path tracing.
no code implementations • 17 Apr 2023 • Zhongyao Hu, Bo Chen, Rusheng Wang, Li Yu
A posterior-based SET mechanism is proposed, which determines whether to transmit data by the effect of the measurement on the posterior estimate.
no code implementations • 6 Feb 2023 • Wangzhuo Yang, Bo Chen, Yijun Shen, Jiong Liu, Li Yu
To overcome these challenges, a multi-layer multi-fusion strategy framework is proposed in this paper, i. e., the server adopts the network layer parameters of each client upload model as the basic unit of fusion for information-sharing calculation.
no code implementations • 19 Jan 2023 • Zheming Wang, Raphaël M. Jungers, Mihály Petreczky, Bo Chen, Li Yu
In this paper, we propose an algorithm for deciding stability of switched linear systems under arbitrary switching based purely on observed output data.
no code implementations • 14 Jan 2023 • Md Zobaer Islam, Li Yu, Hisham Abuella, John F. O'Hara, Christopher Crick, Sabit Ekin
In this study, we present a wireless (non-contact) gesture recognition method using only incoherent light wave signals reflected from a human subject.
no code implementations • 30 Dec 2022 • Bo Chen, Pindi Weng, Daniel W. C. Ho, Li Yu
This paper is concerned with the problem of secure multi-sensors fusion estimation for cyber-physical systems, where sensor measurements may be tampered with by false data injection (FDI) attacks.
no code implementations • 25 Oct 2022 • Li Yu, Wenshuai Chang, Shiyu Wu, Moncef Gabbouj
In this work, we propose a transformer-based compressed video quality enhancement (TVQE) method, consisting of Swin-AutoEncoder based Spatio-Temporal feature Fusion (SSTF) module and Channel-wise Attention based Quality Enhancement (CAQE) module.
no code implementations • 17 Sep 2022 • Yutong Sun, Jianhua Zhang, Li Yu, Zhen Zhang, Ping Zhang
Inspired by task-oriented semantic communication and machine learning (ML) powered environment-channel mapping methods, this work aims to provide a new view of the environment from the semantic level, which defines the propagation environment semantics (PES) as a limited set of propagation environment semantic symbols (PESS) for diverse application tasks.
no code implementations • 3 Aug 2022 • Rusheng Wang, Bo Chen, Zhongyao Hu, Li Yu
This paper studies the event-triggered distributed fusion estimation problems for a class of nonlinear networked multisensor fusion systems without noise statistical characteristics.
no code implementations • 11 Jul 2022 • Zhaowei Chang, Jianhua Zhang, Pan Tang, Lei Tian, Li Yu, Guangyi Liu, Liang Xia
In this letter, the reflection coefficient of the THz channel is researched based on extensive measurement campaigns.
1 code implementation • 29 Jun 2022 • Xian lin, Li Yu, Kwang-Ting Cheng, Zengqiang Yan
To our best knowledge, this is the first work on transformer pruning for medical image analysis tasks.
2 code implementations • 29 Jun 2022 • Xian lin, Li Yu, Kwang-Ting Cheng, Zengqiang Yan
Specifically, to fully explore the benefits of transformers in long-range dependency establishment, a cross-scale global transformer (CGT) module is introduced to jointly utilize multiple small-scale feature maps for richer global features with lower computational complexity.
1 code implementation • 28 Jun 2022 • Nannan Wu, Li Yu, Xin Yang, Kwang-Ting Cheng, Zengqiang Yan
In this paper, we present a privacy-preserving FL method named FedIIC to combat class imbalance from two perspectives: feature learning and classifier learning.
no code implementations • 1 Jun 2022 • Yuchen Zhang, Bo Chen, Li Yu, Daniel W. C. Ho
By merging these subsystem-level stability conditions and the optimization-based estimator gain design, the distributed, stable and optimal estimators are proposed.
no code implementations • 17 Mar 2022 • Li Yu, Kareem Metwaly, James Z. Wang, Vishal Monga
Detecting and evaluating surface coating defects is important for marine vessel maintenance.
no code implementations • 28 Dec 2021 • Xuanying Chen, Zhining Liu, Li Yu, Sen Li, Lihong Gu, Xiaodong Zeng, Yize Tan, Jinjie Gu
This bias deteriorates the performance of the response model and misleads the linear programming process, dramatically degrading the performance of the resulting allocation policy.
no code implementations • 27 Oct 2021 • Zhongyao Hu, Bo Chen, Yuchen Zhang, Li Yu
When considering linear dynamic systems, a conservative estimation error covariance with adjustable parameters is constructed by matrix inequality, and then an optimal filter gain is derived by minimizing its trace.
no code implementations • 13 Oct 2021 • Zhongyao Hu, Bo Chen, Wen-An Zhang, Li Yu
For this criterion, it is proved that the fusion results are not affected by the fusion structure, and thus the fusion performance can be guaranteed.
no code implementations • CVPR 2021 • ShiYang Yan, Li Yu, Yuan Xie
We propose a novel attention scheme which projects the image and text embedding into a common space and optimises the attention weights directly towards the evaluation metrics.
no code implementations • 20 Nov 2020 • Li Yu
This generalizes the Hochster's formula for the moment-angle manifold over a simple convex polytope.
Algebraic Topology Geometric Topology 57S12 (Primary) 57N65, 57S17, 57S25 (Secondary)
no code implementations • 6 Aug 2020 • Vikas Kumar, Shivansh Rao, Li Yu
Facial expression recognition from videos in the wild is a challenging task due to the lack of abundant labelled training data.
Ranked #7 on
Facial Expression Recognition (FER)
on Acted Facial Expressions In The Wild (AFEW)
(using extra training data)
Facial Expression Recognition
Facial Expression Recognition (FER)
no code implementations • 16 Jul 2020 • Li Yu, Hisham Abuella, Md Zobaer Islam, John F. O'Hara, Christopher Crick, Sabit Ekin
In this paper, we demonstrate the ability to recognize hand gestures in a non-contact, wireless fashion using only incoherent light signals reflected from a human subject.
no code implementations • ECCV 2020 • Yao Zhou, Guowei Wan, Shenhua Hou, Li Yu, Gang Wang, Xiaofei Rui, Shiyu Song
We present a visual localization framework based on novel deep attention aware features for autonomous driving that achieves centimeter level localization accuracy.
no code implementations • MIDL 2019 • Zhuo Kuang, Xianbo Deng, Li Yu, Hang Zhang, Xian lin, Hui Ma
Guiding by the morphological features of the skull, a skeleton-based region proposal method is proposed to make candidate boxes more concentrated in key regions and reduce invalid boxes.
no code implementations • 23 Sep 2018 • Chenying Wang, Li Yu, Shengwei Wang
High efficiency video coding (HEVC) suffers high encoding computational complexity, partly attributed to the rate-distortion optimization quad-tree search in CU partition decision.
no code implementations • 11 Oct 2016 • Yifan Hou, Pan Zhou, Ting Wang, Li Yu, Yuchong Hu, Dapeng Wu
In this respect, the key challenge is how to realize personalized course recommendation as well as to reduce the computing and storage costs for the tremendous course data.
no code implementations • 17 May 2016 • Li Yu, Cyril Joly, Guillaume Bresson, Fabien Moutarde
This paper presents a metric global localization in the urban environment only with a monocular camera and the Google Street View database.