Search Results for author: Xiao Sun

Found 75 papers, 37 papers with code

SGA-INTERACT: A 3D Skeleton-based Benchmark for Group Activity Understanding in Modern Basketball Tactic

1 code implementation9 Mar 2025 Yuchen Yang, Wei Wang, Yifei Liu, Linfeng Dong, Hao Wu, Mingxin Zhang, Zhihang Zhong, Xiao Sun

This framework aligns with the feature extraction paradigm in RGB-based methods, enabling direct evaluation of RGB-based models on skeleton-based benchmarks.

Group Activity Recognition Temporal Group Activity Localization

Safety-Critical Traffic Simulation with Adversarial Transfer of Driving Intentions

no code implementations7 Mar 2025 Zherui Huang, Xing Gao, Guanjie Zheng, Licheng Wen, Xuemeng Yang, Xiao Sun

Simulating such safety-critical scenarios is nontrivial, however, from log data that are typically regular scenarios, especially in consideration of dynamic adversarial interactions between the future motions of autonomous vehicles and surrounding traffic participants.

Autonomous Vehicles Motion Planning

MaskGaussian: Adaptive 3D Gaussian Representation from Probabilistic Masks

1 code implementation29 Dec 2024 Yifei Liu, Zhihang Zhong, Yifan Zhan, Sheng Xu, Xiao Sun

While 3D Gaussian Splatting (3DGS) has demonstrated remarkable performance in novel view synthesis and real-time rendering, the high memory consumption due to the use of millions of Gaussians limits its practicality.

3DGS Novel View Synthesis

DIR: Retrieval-Augmented Image Captioning with Comprehensive Understanding

no code implementations2 Dec 2024 Hao Wu, Zhihang Zhong, Xiao Sun

However, current methods face two key challenges: (1) image features used for retrieval are often optimized based on ground-truth (GT) captions, which represent the image from a specific perspective and are influenced by annotator biases, and (2) they underutilize the full potential of retrieved text, typically relying on raw captions or parsed objects, which fail to capture the full semantic richness of the data.

Caption Generation Domain Generalization +4

GAST: Sequential Gaussian Avatars with Hierarchical Spatio-temporal Context

no code implementations25 Nov 2024 Wangze Xu, Yifan Zhan, Zhihang Zhong, Xiao Sun

3D human avatars, through the use of canonical radiance fields and per-frame observed warping, enable high-fidelity rendering and animating.

3DGS

X as Supervision: Contending with Depth Ambiguity in Unsupervised Monocular 3D Pose Estimation

1 code implementation20 Nov 2024 Yuchen Yang, Xuanyi Liu, Xing Gao, Zhihang Zhong, Xiao Sun

Recent unsupervised methods for monocular 3D pose estimation have endeavored to reduce dependence on limited annotated 3D data, but most are solely formulated in 2D space, overlooking the inherent depth ambiguity issue.

3D Pose Estimation

ToMiE: Towards Modular Growth in Enhanced SMPL Skeleton for 3D Human with Animatable Garments

1 code implementation10 Oct 2024 Yifan Zhan, Qingtian Zhu, Muyao Niu, Mingze Ma, Jiancheng Zhao, Zhihang Zhong, Xiao Sun, Yu Qiao, Yinqiang Zheng

In this paper, we highlight a critical yet often overlooked factor in most 3D human tasks, namely modeling humans with complex garments.

UniEmoX: Cross-modal Semantic-Guided Large-Scale Pretraining for Universal Scene Emotion Perception

1 code implementation27 Sep 2024 Chuang Chen, Xiao Sun, Zhi Liu

To the best of our knowledge, this is the first large-scale pretraining framework that integrates psychological theories with contemporary contrastive learning and masked image modeling techniques for emotion analysis across diverse scenarios.

Contrastive Learning Emotion Recognition

Prior Knowledge Distillation Network for Face Super-Resolution

no code implementations22 Sep 2024 Qiu Yang, Xiao Sun, Xin-yu Li, Feng-Qi Cui, Yu-Tong Guo, Shuang-Zhen Hu, Ping Luo, Si-Ying Li

This approach enables the network to learn priors during the training stage while relying solely on low-resolution facial images during the testing stage, thus mitigating the adverse effects of prior estimation inaccuracies.

Knowledge Distillation Super-Resolution

GRPose: Learning Graph Relations for Human Image Generation with Pose Priors

1 code implementation29 Aug 2024 Xiangchen Yin, Donglin Di, Lei Fan, Hao Li, Wei Chen, Xiaofei Gou, Yang song, Xiao Sun, Xun Yang

In this paper, we propose a framework that delves into the graph relations of pose priors to provide control information for human image generation.

Image Generation Pose Estimation

OccMamba: Semantic Occupancy Prediction with State Space Models

1 code implementation19 Aug 2024 Heng Li, Yuenan Hou, Xiaohan Xing, Xiao Sun, Yanyong Zhang

Inspired by the global modeling and linear computation complexity of the Mamba architecture, we present the first Mamba-based network for semantic occupancy prediction, termed OccMamba.

Mamba Prediction +1

Empathy Level Alignment via Reinforcement Learning for Empathetic Response Generation

1 code implementation6 Aug 2024 Hui Ma, Bo Zhang, Bo Xu, Jian Wang, Hongfei Lin, Xiao Sun

During reinforcement learning training, the proximal policy optimization algorithm is used to fine-tune the policy, enabling the generation of empathetic responses.

Empathetic Response Generation reinforcement-learning +3

A Deep Learning-Based Target Radial Length Estimation Method through HRRP Sequence

no code implementations16 Jul 2024 Lingfeng Chen, Panhe Hu, Zhiliang Pan, Xiao Sun, Zehao Wang

This paper introduces an innovative deep learning-based method for end-to-end target radial length estimation from HRRP (High Resolution Range Profile) sequences.

HRRPGraphNet: Make HRRPs to Be Graphs for Efficient Target Recognition

1 code implementation11 Jul 2024 Lingfeng Chen, Xiao Sun, Zhiliang Pan, Zehao Wang, Xiaolong Su, Zhen Liu, Panhe Hu

High Resolution Range Profiles (HRRP) have become a key area of focus in the domain of Radar Automatic Target Recognition (RATR).

Graph Neural Network

PsycoLLM: Enhancing LLM for Psychological Understanding and Evaluation

1 code implementation8 Jul 2024 Jinpeng Hu, Tengteng Dong, Luo Gang, Hui Ma, Peng Zou, Xiao Sun, Dan Guo, Xun Yang, Meng Wang

Additionally, to compare the performance of PsycoLLM with other LLMs, we develop a comprehensive psychological benchmark based on authoritative psychological counseling examinations in China, which includes assessments of professional ethics, theoretical proficiency, and case analysis.

Ethics Language Modeling +2

Joint Spatial-Temporal Modeling and Contrastive Learning for Self-supervised Heart Rate Measurement

no code implementations7 Jun 2024 Wei Qian, Qi Li, Kun Li, Xinke Wang, Xiao Sun, Meng Wang, Dan Guo

This paper briefly introduces the solutions developed by our team, HFUT-VUT, for Track 1 of self-supervised heart rate measurement in the 3rd Vision-based Remote Physiological Signal Sensing (RePSS) Challenge hosted at IJCAI 2024.

Contrastive Learning Self-Supervised Learning

DIBS: Enhancing Dense Video Captioning with Unlabeled Videos via Pseudo Boundary Enrichment and Online Refinement

no code implementations CVPR 2024 Hao Wu, Huabin Liu, Yu Qiao, Xiao Sun

We present Dive Into the BoundarieS (DIBS), a novel pretraining framework for dense video captioning (DVC), that elaborates on improving the quality of the generated event captions and their associated pseudo event boundaries from unlabeled videos.

Dense Video Captioning Diversity

Aleth-NeRF: Illumination Adaptive NeRF with Concealing Field Assumption

1 code implementation14 Dec 2023 Ziteng Cui, Lin Gu, Xiao Sun, Xianzheng Ma, Yu Qiao, Tatsuya Harada

The standard Neural Radiance Fields (NeRF) paradigm employs a viewer-centered methodology, entangling the aspects of illumination and material reflectance into emission solely from 3D points.

NeRF

Clearer Frames, Anytime: Resolving Velocity Ambiguity in Video Frame Interpolation

1 code implementation14 Nov 2023 Zhihang Zhong, Xiao Sun, Yu Qiao, Gurunandan Krishnan, Sizhuo Ma, Jian Wang

Existing video frame interpolation (VFI) methods blindly predict where each object is at a specific timestep t ("time indexing"), which struggles to predict precise object movements.

Object Video Editing +1

ASM: Adaptive Sample Mining for In-The-Wild Facial Expression Recognition

no code implementations9 Oct 2023 Ziyang Zhang, Xiao Sun, Liuwei An, Meng Wang

First, the Adaptive Threshold Learning module generates two thresholds, namely the clean and noisy thresholds, for each category.

Facial Expression Recognition Facial Expression Recognition (FER)

DEFormer: DCT-driven Enhancement Transformer for Low-light Image and Dark Vision

no code implementations13 Sep 2023 Xiangchen Yin, Zhenda Yu, Xin Gao, Xiao Sun

Low-light image enhancement restores the colors and details of a single image and improves high-level visual tasks.

Autonomous Driving Low-Light Image Enhancement

PREFER: Prompt Ensemble Learning via Feedback-Reflect-Refine

1 code implementation23 Aug 2023 Chenrui Zhang, Lin Liu, Jinpeng Wang, Chuyuan Wang, Xiao Sun, Hongyu Wang, Mingchen Cai

Moreover, to enhance stability of the prompt effect evaluation, we propose a novel prompt bagging method involving forward and backward thinking, which is superior to majority voting and is beneficial for both feedback and weight calculation in boosting.

Ensemble Learning Hallucination

Revisiting Neural Retrieval on Accelerators

3 code implementations6 Jun 2023 Jiaqi Zhai, Zhaojie Gong, Yueming Wang, Xiao Sun, Zheng Yan, Fu Li, Xing Liu

A key component of retrieval is to model (user, item) similarity, which is commonly represented as the dot product of two learned embeddings.

Information Retrieval Retrieval

Bi-ViT: Pushing the Limit of Vision Transformer Quantization

no code implementations21 May 2023 Yanjing Li, Sheng Xu, Mingbao Lin, Xianbin Cao, Chuanjian Liu, Xiao Sun, Baochang Zhang

Vision transformers (ViTs) quantization offers a promising prospect to facilitate deploying large pre-trained networks on resource-limited devices.

Binarization Quantization

Long-Term Rhythmic Video Soundtracker

1 code implementation2 May 2023 Jiashuo Yu, Yaohui Wang, Xinyuan Chen, Xiao Sun, Yu Qiao

To this end, we present Long-Term Rhythmic Video Soundtracker (LORIS), a novel framework to synthesize long-term conditional waveforms.

Mutilmodal Feature Extraction and Attention-based Fusion for Emotion Estimation in Videos

1 code implementation18 Mar 2023 Tao Shu, Xinke Wang, Ruotong Wang, Chuang Chen, Yixin Zhang, Xiao Sun

The continuous improvement of human-computer interaction technology makes it possible to compute emotions.

Sentiment Analysis

Facial Affect Recognition based on Transformer Encoder and Audiovisual Fusion for the ABAW5 Challenge

no code implementations16 Mar 2023 Ziyang Zhang, Liuwei An, Zishun Cui, Ao Xu, Tengteng Dong, Yueqi Jiang, Jingyi Shi, Xin Liu, Xiao Sun, Meng Wang

In this paper, we present our solutions for the 5th Workshop and Competition on Affective Behavior Analysis in-the-wild (ABAW), which includes four sub-challenges of Valence-Arousal (VA) Estimation, Expression (Expr) Classification, Action Unit (AU) Detection and Emotional Reaction Intensity (ERI) Estimation.

Aleth-NeRF: Low-light Condition View Synthesis with Concealing Fields

1 code implementation10 Mar 2023 Ziteng Cui, Lin Gu, Xiao Sun, Xianzheng Ma, Yu Qiao, Tatsuya Harada

Common capture low-light scenes are challenging for most computer vision techniques, including Neural Radiance Fields (NeRF).

Low-Light Image Enhancement NeRF

Randomized Quantization: A Generic Augmentation for Data Agnostic Self-supervised Learning

4 code implementations ICCV 2023 Huimin Wu, Chenyang Lei, Xiao Sun, Peng-Shuai Wang, Qifeng Chen, Kwang-Ting Cheng, Stephen Lin, Zhirong Wu

Self-supervised representation learning follows a paradigm of withholding some part of the data and tasking the network to predict it from the remaining part.

Data Augmentation Quantization +2

Hybrid Multimodal Fusion for Humor Detection

no code implementations24 Sep 2022 Haojie Xu, Weifeng Liu, Jingwei Liu, Mingzheng Li, Yu Feng, Yasi Peng, Yunwei Shi, Xiao Sun, Meng Wang

Our experiments demonstrate the effectiveness of our proposed model and hybrid fusion strategy on multimodal fusion, and the AUC of our proposed model on the test set is 0. 8972.

Humor Detection

Hybrid Multimodal Feature Extraction, Mining and Fusion for Sentiment Analysis

1 code implementation5 Aug 2022 Jia Li, Ziyang Zhang, Junjie Lang, Yueqi Jiang, Liuwei An, Peng Zou, Yangyang Xu, Sheng Gao, Jie Lin, Chunxiao Fan, Xiao Sun, Meng Wang

In this paper, we present our solutions for the Multimodal Sentiment Analysis Challenge (MuSe) 2022, which includes MuSe-Humor, MuSe-Reaction and MuSe-Stress Sub-challenges.

Data Augmentation Humor Detection +1

Animation from Blur: Multi-modal Blur Decomposition with Motion Guidance

1 code implementation20 Jul 2022 Zhihang Zhong, Xiao Sun, Zhirong Wu, Yinqiang Zheng, Stephen Lin, Imari Sato

Existing solutions to this problem estimate a single image sequence without considering the motion ambiguity for each region.

Optical Flow Estimation Quantization

Extreme Masking for Learning Instance and Distributed Visual Representations

1 code implementation9 Jun 2022 Zhirong Wu, Zihang Lai, Xiao Sun, Stephen Lin

The paper presents a scalable approach for learning spatially distributed visual representations over individual tokens and a holistic instance representation simultaneously.

Data Augmentation Representation Learning

Unsupervised Learning of Efficient Geometry-Aware Neural Articulated Representations

no code implementations19 Apr 2022 Atsuhiro Noguchi, Xiao Sun, Stephen Lin, Tatsuya Harada

We propose an unsupervised method for 3D geometry-aware representation learning of articulated objects, in which no image-pose pairs or foreground masks are used for training.

3D geometry Representation Learning

Bringing Rolling Shutter Images Alive with Dual Reversed Distortion

1 code implementation12 Mar 2022 Zhihang Zhong, Mingdeng Cao, Xiao Sun, Zhirong Wu, Zhongyi Zhou, Yinqiang Zheng, Stephen Lin, Imari Sato

In this paper, instead of two consecutive frames, we propose to exploit a pair of images captured by dual RS cameras with reversed RS directions for this highly challenging task.

Optical Flow Estimation

A Simple Multi-Modality Transfer Learning Baseline for Sign Language Translation

4 code implementations CVPR 2022 Yutong Chen, Fangyun Wei, Xiao Sun, Zhirong Wu, Stephen Lin

Concretely, we pretrain the sign-to-gloss visual network on the general domain of human actions and the within-domain of a sign-to-gloss dataset, and pretrain the gloss-to-text translation network on the general domain of a multilingual corpus and the within-domain of a gloss-to-text corpus.

Sign Language Recognition Sign Language Translation +2

Robust facial expression recognition with global‑local joint representation learning

no code implementations Multimedia Systems 2022 Chunxiao Fan, zhenxing Wang, Jia Li, Shanshan Wang, Xiao Sun

In the proposed method, (1) the topological structure information and texture feature of regions of interest (ROIs) are modeled as graphs and processed with graph convolutional network (GCN) to remain the topological features.

Facial Expression Recognition Facial Expression Recognition (FER) +1

Cross-Model Pseudo-Labeling for Semi-Supervised Action Recognition

no code implementations CVPR 2022 Yinghao Xu, Fangyun Wei, Xiao Sun, Ceyuan Yang, Yujun Shen, Bo Dai, Bolei Zhou, Stephen Lin

Typically in recent work, the pseudo-labels are obtained by training a model on the labeled data, and then using confident predictions from the model to teach itself.

Action Recognition

Towards Tokenized Human Dynamics Representation

1 code implementation22 Nov 2021 Kenneth Li, Xiao Sun, Zhirong Wu, Fangyun Wei, Stephen Lin

For human action understanding, a popular research direction is to analyze short video clips with unambiguous semantic content, such as jumping and drinking.

Action Segmentation Action Understanding +3

Self-supervised Discovery of Human Actons from Long Kinematic Videos

no code implementations29 Sep 2021 Kenneth Li, Xiao Sun, Zhirong Wu, Fangyun Wei, Stephen Lin

However, methods for understanding short semantic actions cannot be directly translated to long kinematic sequences such as dancing, where it becomes challenging even to semantically label the human movements.

Action Understanding Sentence

ACP++: Action Co-occurrence Priors for Human-Object Interaction Detection

1 code implementation9 Sep 2021 Dong-Jin Kim, Xiao Sun, Jinsoo Choi, Stephen Lin, In So Kweon

A common problem in the task of human-object interaction (HOI) detection is that numerous HOI classes have only a small number of labeled examples, resulting in training sets with a long-tailed distribution.

Human-Object Interaction Detection

4-bit Quantization of LSTM-based Speech Recognition Models

no code implementations27 Aug 2021 Andrea Fasoli, Chia-Yu Chen, Mauricio Serrano, Xiao Sun, Naigang Wang, Swagath Venkataramani, George Saon, Xiaodong Cui, Brian Kingsbury, Wei zhang, Zoltán Tüske, Kailash Gopalakrishnan

We investigate the impact of aggressive low-precision representations of weights and activations in two families of large LSTM-based architectures for Automatic Speech Recognition (ASR): hybrid Deep Bidirectional LSTM - Hidden Markov Models (DBLSTM-HMMs) and Recurrent Neural Network - Transducers (RNN-Ts).

Automatic Speech Recognition Automatic Speech Recognition (ASR) +2

Learning Skeletal Graph Neural Networks for Hard 3D Pose Estimation

no code implementations ICCV 2021 Ailing Zeng, Xiao Sun, Lei Yang, Nanxuan Zhao, Minhao Liu, Qiang Xu

While the average prediction accuracy has been improved significantly over the years, the performance on hard poses with depth ambiguity, self-occlusion, and complex or rare poses is still far from satisfactory.

3D Human Pose Estimation 3D Pose Estimation +3

Neural Articulated Radiance Field

1 code implementation ICCV 2021 Atsuhiro Noguchi, Xiao Sun, Stephen Lin, Tatsuya Harada

We present Neural Articulated Radiance Field (NARF), a novel deformable 3D representation for articulated objects learned from images.

Ultra-Low Precision 4-bit Training of Deep Neural Networks

no code implementations NeurIPS 2020 Xiao Sun, Naigang Wang, Chia-Yu Chen, Jiamin Ni, Ankur Agrawal, Xiaodong Cui, Swagath Venkataramani, Kaoutar El Maghraoui, Vijayalakshmi (Viji) Srinivasan, Kailash Gopalakrishnan

In this paper, we propose a number of novel techniques and numerical representation formats that enable, for the very first time, the precision of training systems to be aggressively scaled from 8-bits to 4-bits.

Quantization

SRNet: Improving Generalization in 3D Human Pose Estimation with a Split-and-Recombine Approach

1 code implementation ECCV 2020 Ailing Zeng, Xiao Sun, Fuyang Huang, Minhao Liu, Qiang Xu, Stephen Lin

With the reduced dimensionality of less relevant body areas, the training set distribution within network branches more closely reflects the statistics of local poses instead of global body poses, without sacrificing information important for joint inference.

Monocular 3D Human Pose Estimation

Detecting Human-Object Interactions with Action Co-occurrence Priors

1 code implementation17 Jul 2020 Dong-Jin Kim, Xiao Sun, Jinsoo Choi, Stephen Lin, In So Kweon

A common problem in human-object interaction (HOI) detection task is that numerous HOI classes have only a small number of labeled examples, resulting in training sets with a long-tailed distribution.

Human-Object Interaction Detection

Point-Set Anchors for Object Detection, Instance Segmentation and Pose Estimation

1 code implementation ECCV 2020 Fangyun Wei, Xiao Sun, Hongyang Li, Jingdong Wang, Stephen Lin

A recent approach for object detection and human pose estimation is to regress bounding boxes or human keypoints from a central point on the object or person.

Instance Segmentation Object +5

Downhole Track Detection via Multiscale Conditional Generative Adversarial Nets

no code implementations17 Apr 2019 Jia Li, Xing Wei, Guoqiang Yang, Xiao Sun, Changliang Li

A multiscale shared convolution structure is adopted in the discriminator network to further supervise training the generator.

Autonomous Driving Generative Adversarial Network

Reinforcement Learning Based Emotional Editing Constraint Conversation Generation

no code implementations17 Apr 2019 Jia Li, Xiao Sun, Xing Wei, Changliang Li, Jian-Hua Tao

In recent years, the generation of conversation content based on deep neural networks has attracted many researchers.

Multi-Task Learning reinforcement-learning +2

Explicit Spatiotemporal Joint Relation Learning for Tracking Human Pose

no code implementations17 Nov 2018 Xiao Sun, Chuankang Li, Stephen Lin

We present a method for human pose tracking that is based on learning spatiotemporal relationships among joints.

Optical Flow Estimation Pose Estimation +3

An Integral Pose Regression System for the ECCV2018 PoseTrack Challenge

1 code implementation17 Sep 2018 Xiao Sun, Chuankang Li, Stephen Lin

For the ECCV 2018 PoseTrack Challenge, we present a 3D human pose estimation system based mainly on the integral human pose regression method.

3D Human Pose Estimation regression

Compositional Human Pose Regression

1 code implementation ICCV 2017 Xiao Sun, Jiaxiang Shang, Shuang Liang, Yichen Wei

A central problem is that the structural information in the pose is not well exploited in the previous regression methods.

3D Human Pose Estimation 3D Pose Estimation +1

Deep Kinematic Pose Regression

no code implementations17 Sep 2016 Xingyi Zhou, Xiao Sun, Wei zhang, Shuang Liang, Yichen Wei

In this work, we propose to directly embed a kinematic object model into the deep neutral network learning for general articulated object pose estimation.

3D Human Pose Estimation Object +2

Cascaded Hand Pose Regression

no code implementations CVPR 2015 Xiao Sun, Yichen Wei, Shuang Liang, Xiaoou Tang, Jian Sun

We extends the previous 2D cascaded object pose regression work [9] in two aspects so that it works better for 3D articulated objects.

3D Hand Pose Estimation Object +1

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