Search Results for author: Jiaqi Yang

Found 49 papers, 10 papers with code

Pneumonia App: a mobile application for efficient pediatric pneumonia diagnosis using explainable convolutional neural networks (CNN)

no code implementations31 Mar 2024 Jiaming Deng, Zhenglin Chen, Minjiang Chen, Lulu Xu, Jiaqi Yang, Zhendong Luo, Peiwu Qin

Mycoplasma pneumoniae pneumonia (MPP) poses significant diagnostic challenges in pediatric healthcare, especially in regions like China where it's prevalent.

Superior and Pragmatic Talking Face Generation with Teacher-Student Framework

no code implementations26 Mar 2024 Chao Liang, Jianwen Jiang, Tianyun Zhong, Gaojie Lin, Zhengkun Rong, Jiaqi Yang, Yongming Zhu

Talking face generation technology creates talking videos from arbitrary appearance and motion signal, with the "arbitrary" offering ease of use but also introducing challenges in practical applications.

Talking Face Generation

Instance by Instance: An Iterative Framework for Multi-instance 3D Registration

no code implementations6 Feb 2024 Xinyue Cao, Xiyu Zhang, Yuxin Cheng, Zhaoshuai Qi, Yanning Zhang, Jiaqi Yang

Multi-instance registration is a challenging problem in computer vision and robotics, where multiple instances of an object need to be registered in a standard coordinate system.

Relative Pose for Nonrigid Multi-Perspective Cameras: The Static Case

no code implementations17 Jan 2024 Min Li, Jiaqi Yang, Laurent Kneip

Multi-perspective cameras with potentially non-overlapping fields of view have become an important exteroceptive sensing modality in a number of applications such as intelligent vehicles, drones, and mixed reality headsets.

Mixed Reality

Real3D-Portrait: One-shot Realistic 3D Talking Portrait Synthesis

1 code implementation16 Jan 2024 Zhenhui Ye, Tianyun Zhong, Yi Ren, Jiaqi Yang, Weichuang Li, Jiawei Huang, Ziyue Jiang, Jinzheng He, Rongjie Huang, Jinglin Liu, Chen Zhang, Xiang Yin, Zejun Ma, Zhou Zhao

One-shot 3D talking portrait generation aims to reconstruct a 3D avatar from an unseen image, and then animate it with a reference video or audio to generate a talking portrait video.

3D Reconstruction Super-Resolution +1

Learning transformer-based heterogeneously salient graph representation for multimodal fusion classification of hyperspectral image and LiDAR data

no code implementations17 Nov 2023 Jiaqi Yang, Bo Du, Liangpei Zhang

Data collected by different modalities can provide a wealth of complementary information, such as hyperspectral image (HSI) to offer rich spectral-spatial properties, synthetic aperture radar (SAR) to provide structural information about the Earth's surface, and light detection and ranging (LiDAR) to cover altitude information about ground elevation.

Image Classification Remote Sensing Image Classification

3D Registration with Maximal Cliques

1 code implementation CVPR 2023 Xiyu Zhang, Jiaqi Yang, Shikun Zhang, Yanning Zhang

The key insight is to loosen the previous maximum clique constraint, and mine more local consensus information in a graph for accurate pose hypotheses generation: 1) A compatibility graph is constructed to render the affinity relationship between initial correspondences.

Point Cloud Registration

Hierarchical Prior Mining for Non-local Multi-View Stereo

no code implementations ICCV 2023 Chunlin Ren, Qingshan Xu, Shikun Zhang, Jiaqi Yang

3) A Hierarchical Prior Mining (HPM) framework, which is used to mine extensive non-local prior information at different scales to assist 3D model recovery, this strategy can achieve a considerable balance between the reconstruction of details and low-textured areas.

MixCycle: Mixup Assisted Semi-Supervised 3D Single Object Tracking with Cycle Consistency

1 code implementation ICCV 2023 Qiao Wu, Jiaqi Yang, Kun Sun, Chu'ai Zhang, Yanning Zhang, Mathieu Salzmann

Specifically, we introduce two cycle-consistency strategies for supervision: 1) Self tracking cycles, which leverage labels to help the model converge better in the early stages of training; 2) forward-backward cycles, which strengthen the tracker's robustness to motion variations and the template noise caused by the template update strategy.

3D Single Object Tracking Data Augmentation +1

PSNet: a deep learning model based digital phase shifting algorithm from a single fringe image

no code implementations14 Mar 2023 Zhaoshuai Qi, Xiaojun Liu, Xiaolin Liu, Jiaqi Yang, Yanning Zhang

As the gold standard for phase retrieval, phase-shifting algorithm (PS) has been widely used in optical interferometry, fringe projection profilometry, etc.

Retrieval

iQuery: Instruments as Queries for Audio-Visual Sound Separation

1 code implementation CVPR 2023 Jiaben Chen, Renrui Zhang, Dongze Lian, Jiaqi Yang, Ziyao Zeng, Jianbo Shi

To generalize to a new instrument or event class, drawing inspiration from the text-prompt design, we insert an additional query as an audio prompt while freezing the attention mechanism.

Disentanglement

Multi-view Inverse Rendering for Large-scale Real-world Indoor Scenes

1 code implementation CVPR 2023 Zhen Li, Lingli Wang, Mofang Cheng, Cihui Pan, Jiaqi Yang

We present a efficient multi-view inverse rendering method for large-scale real-world indoor scenes that reconstructs global illumination and physically-reasonable SVBRDFs.

Inverse Rendering Mixed Reality +3

VECtor: A Versatile Event-Centric Benchmark for Multi-Sensor SLAM

no code implementations4 Jul 2022 Ling Gao, Yuxuan Liang, Jiaqi Yang, Shaoxun Wu, Chenyu Wang, Jiaben Chen, Laurent Kneip

Event cameras have recently gained in popularity as they hold strong potential to complement regular cameras in situations of high dynamics or challenging illumination.

Simultaneous Localization and Mapping

Phasic Self-Imitative Reduction for Sparse-Reward Goal-Conditioned Reinforcement Learning

no code implementations24 Jun 2022 Yunfei Li, Tian Gao, Jiaqi Yang, Huazhe Xu, Yi Wu

It has been a recent trend to leverage the power of supervised learning (SL) towards more effective reinforcement learning (RL) methods.

reinforcement-learning Reinforcement Learning (RL)

Revisiting Some Common Practices in Cooperative Multi-Agent Reinforcement Learning

no code implementations15 Jun 2022 Wei Fu, Chao Yu, Zelai Xu, Jiaqi Yang, Yi Wu

Despite all the advantages, we revisit these two principles and show that in certain scenarios, e. g., environments with a highly multi-modal reward landscape, value decomposition, and parameter sharing can be problematic and lead to undesired outcomes.

Multi-agent Reinforcement Learning reinforcement-learning +2

Nearly Minimax Algorithms for Linear Bandits with Shared Representation

no code implementations29 Mar 2022 Jiaqi Yang, Qi Lei, Jason D. Lee, Simon S. Du

We give novel algorithms for multi-task and lifelong linear bandits with shared representation.

Unsupervised Learning of 3D Semantic Keypoints with Mutual Reconstruction

no code implementations19 Mar 2022 Haocheng Yuan, Chen Zhao, Shichao Fan, Jiaxi Jiang, Jiaqi Yang

To the best of our knowledge, the proposed method is the first to mine 3D semantic consistent keypoints from a mutual reconstruction view.

A Topology-Attention ConvLSTM Network and Its Application to EM Images

no code implementations7 Feb 2022 Jiaqi Yang, Xiaoling Hu, Chao Chen, Chialing Tsai

We propose a novel TopologyAttention ConvLSTM Network (TACNet) for 3D image segmentation in order to achieve high structural accuracy for 3D segmentation tasks.

Image Segmentation Segmentation +1

DEVO: Depth-Event Camera Visual Odometry in Challenging Conditions

no code implementations5 Feb 2022 Yi-Fan Zuo, Jiaqi Yang, Jiaben Chen, Xia Wang, Yifu Wang, Laurent Kneip

We present a novel real-time visual odometry framework for a stereo setup of a depth and high-resolution event camera.

Computational Efficiency Visual Odometry

PhyIR: Physics-Based Inverse Rendering for Panoramic Indoor Images

1 code implementation CVPR 2022 Zhen Li, Lingli Wang, Xiang Huang, Cihui Pan, Jiaqi Yang

In this paper, we present PhyIR, a neural inverse rendering method with a more completed SVBRDF representation and a physics-based in-network rendering layer, which can handle complex material and incorporate physical constraints by re-rendering realistic and detailed specular reflectance.

Inverse Rendering

A Robust Scheme for 3D Point Cloud Copy Detection

no code implementations3 Oct 2021 Jiaqi Yang, Xuequan Lu, Wenzhi Chen

In this paper, we focus on a fundamental and practical research problem: judging whether a point cloud is plagiarized or copied to another point cloud in the presence of several manipulations (e. g., similarity transformation, smoothing).

Copy Detection

Going Beyond Linear RL: Sample Efficient Neural Function Approximation

no code implementations NeurIPS 2021 Baihe Huang, Kaixuan Huang, Sham M. Kakade, Jason D. Lee, Qi Lei, Runzhe Wang, Jiaqi Yang

While the theory of RL has traditionally focused on linear function approximation (or eluder dimension) approaches, little is known about nonlinear RL with neural net approximations of the Q functions.

Reinforcement Learning (RL)

Optimal Gradient-based Algorithms for Non-concave Bandit Optimization

no code implementations NeurIPS 2021 Baihe Huang, Kaixuan Huang, Sham M. Kakade, Jason D. Lee, Qi Lei, Runzhe Wang, Jiaqi Yang

This work considers a large family of bandit problems where the unknown underlying reward function is non-concave, including the low-rank generalized linear bandit problems and two-layer neural network with polynomial activation bandit problem.

Dynamic Image Restoration and Fusion Based on Dynamic Degradation

no code implementations26 Apr 2021 Aiqing Fang, Xinbo Zhao, Jiaqi Yang, Yanning Zhang

In addition, a dynamic degradation kernel is proposed to improve the robustness of image restoration and fusion.

Image Restoration

Transportation Density Reduction Caused by City Lockdowns Across the World during the COVID-19 Epidemic: From the View of High-resolution Remote Sensing Imagery

no code implementations2 Mar 2021 Chen Wu, Sihan Zhu, Jiaqi Yang, Meiqi Hu, Bo Du, Liangpei Zhang, Lefei Zhang, Chengxi Han, Meng Lan

Considering that public transportation was mostly reduced or even forbidden, our results indicate that city lockdown policies are effective at limiting human transmission within cities.

Improved Variance-Aware Confidence Sets for Linear Bandits and Linear Mixture MDP

no code implementations NeurIPS 2021 Zihan Zhang, Jiaqi Yang, Xiangyang Ji, Simon S. Du

With the new confidence sets, we obtain the follow regret bounds: For linear bandits, we obtain an $\tilde{O}(poly(d)\sqrt{1 + \sum_{k=1}^{K}\sigma_k^2})$ data-dependent regret bound, where $d$ is the feature dimension, $K$ is the number of rounds, and $\sigma_k^2$ is the \emph{unknown} variance of the reward at the $k$-th round.

LEMMA

Fully Gap-Dependent Bounds for Multinomial Logit Bandit

no code implementations19 Nov 2020 Jiaqi Yang

We study the multinomial logit (MNL) bandit problem, where at each time step, the seller offers an assortment of size at most $K$ from a pool of $N$ items, and the buyer purchases an item from the assortment according to a MNL choice model.

Multi-Armed Bandits

On Efficient and Robust Metrics for RANSAC Hypotheses and 3D Rigid Registration

no code implementations10 Nov 2020 Jiaqi Yang, Zhiqiang Huang, Siwen Quan, Qian Zhang, Yanning Zhang, Zhiguo Cao

This paper focuses on developing efficient and robust evaluation metrics for RANSAC hypotheses to achieve accurate 3D rigid registration.

Impact of Representation Learning in Linear Bandits

no code implementations ICLR 2021 Jiaqi Yang, Wei Hu, Jason D. Lee, Simon S. Du

For the finite-action setting, we present a new algorithm which achieves $\widetilde{O}(T\sqrt{kN} + \sqrt{dkNT})$ regret, where $N$ is the number of rounds we play for each bandit.

Representation Learning

AE-Netv2: Optimization of Image Fusion Efficiency and Network Architecture

no code implementations5 Oct 2020 Aiqing Fang, Xinbo Zhao, Jiaqi Yang, Beibei Qin, Yanning Zhang

Finally, we explore the commonness and characteristics of different image fusion tasks, which provides a research basis for further research on the continuous learning characteristics of human brain in the field of image fusion.

AE-Net: Autonomous Evolution Image Fusion Method Inspired by Human Cognitive Mechanism

no code implementations17 Jul 2020 Aiqing Fang, Xinbo Zhao, Jiaqi Yang, Shihao Cao, Yanning Zhang

Firstly, the relationship between human brain cognitive mechanism and image fusion task is analyzed and a physical model is established to simulate human brain cognitive mechanism.

Linear Bandits with Limited Adaptivity and Learning Distributional Optimal Design

no code implementations4 Jul 2020 Yufei Ruan, Jiaqi Yang, Yuan Zhou

Motivated by practical needs such as large-scale learning, we study the impact of adaptivity constraints to linear contextual bandits, a central problem in online active learning.

Active Learning Multi-Armed Bandits

LRF-Net: Learning Local Reference Frames for 3D Local Shape Description and Matching

no code implementations22 Jan 2020 Angfan Zhu, Jiaqi Yang, Weiyue Zhao, Zhiguo Cao

The local reference frame (LRF) acts as a critical role in 3D local shape description and matching.

Pose Estimation

A Cross-Modal Image Fusion Method Guided by Human Visual Characteristics

no code implementations18 Dec 2019 Aiqing Fang, Xinbo Zhao, Jiaqi Yang, Yanning Zhang

The characteristics of feature selection, nonlinear combination and multi-task auxiliary learning mechanism of the human visual perception system play an important role in real-world scenarios, but the research of image fusion theory based on the characteristics of human visual perception is less.

Auxiliary Learning feature selection

Rotation Invariant Point Cloud Classification: Where Local Geometry Meets Global Topology

1 code implementation1 Nov 2019 Chen Zhao, Jiaqi Yang, Xin Xiong, Angfan Zhu, Zhiguo Cao, Xin Li

To the best of our knowledge, this work is the first principled approach toward adaptively combining global and local information under the context of RI point cloud analysis.

General Classification Point Cloud Classification

Iterative Clustering with Game-Theoretic Matching for Robust Multi-consistency Correspondence

no code implementations3 Sep 2019 Chen Zhao, Jiaqi Yang, Ke Xian, Zhiguo Cao, Xin Li

Matching corresponding features between two images is a fundamental task to computer vision with numerous applications in object recognition, robotics, and 3D reconstruction.

3D Reconstruction Clustering +2

A Performance Evaluation of Correspondence Grouping Methods for 3D Rigid Data Matching

no code implementations5 Jul 2019 Jiaqi Yang, Ke Xian, Peng Wang, Yanning Zhang

Seeking consistent point-to-point correspondences between 3D rigid data (point clouds, meshes, or depth maps) is a fundamental problem in 3D computer vision.

3D Object Recognition Point Cloud Registration +1

Evaluating Local Geometric Feature Representations for 3D Rigid Data Matching

no code implementations29 Jun 2019 Jiaqi Yang, Siwen Quan, Peng Wang, Yanning Zhang

The outcomes present interesting findings that may shed new light on this community and provide complementary perspectives to existing evaluations on the topic of local geometric feature description.

Object Recognition Point Cloud Registration +1

Comparative evaluation of 2D feature correspondence selection algorithms

1 code implementation30 Apr 2019 Chen Zhao, Jiaqi Yang, Yang Xiao, Zhiguo Cao

Correspondence selection aiming at seeking correct feature correspondences from raw feature matches is pivotal for a number of feature-matching-based tasks.

Learning to Fuse Local Geometric Features for 3D Rigid Data Matching

no code implementations27 Apr 2019 Jiaqi Yang, Chen Zhao, Ke Xian, Angfan Zhu, Zhiguo Cao

This paper presents a simple yet very effective data-driven approach to fuse both low-level and high-level local geometric features for 3D rigid data matching.

NM-Net: Mining Reliable Neighbors for Robust Feature Correspondences

1 code implementation CVPR 2019 Chen Zhao, Zhiguo Cao, Chi Li, Xin Li, Jiaqi Yang

Feature correspondence selection is pivotal to many feature-matching based tasks in computer vision.

Performance Evaluation of 3D Correspondence Grouping Algorithms

no code implementations6 Apr 2018 Jiaqi Yang, Ke Xian, Yang Xiao, Zhiguo Cao

This paper presents a thorough evaluation of several widely-used 3D correspondence grouping algorithms, motived by their significance in vision tasks relying on correct feature correspondences.

3D Object Recognition Point Cloud Registration +1

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