Search Results for author: Qiong Liu

Found 29 papers, 13 papers with code

Unified Scene Representation and Reconstruction for 3D Large Language Models

no code implementations19 Apr 2024 Tao Chu, Pan Zhang, Xiaoyi Dong, Yuhang Zang, Qiong Liu, Jiaqi Wang

Existing approaches extract point clouds either from ground truth (GT) geometry or 3D scenes reconstructed by auxiliary models.

Study of the mechanism of electroacupuncture regulating ferroptosis, inhibiting bladder neck fibrosis, and improving bladder urination function after suprasacral spinal cord injury using proteomics

no code implementations11 Mar 2024 Jin-Can Liu, Li-Ya Tang, Xiao-Ying Sun, Qi-Rui Qu, Qiong Liu, Lu Zhou, Hong Zhang, Bruce Song, Ming Xu, Kun Ai

Purpose The aim of this study was to explore whether electroacupuncture regulates phenotypic transformation of smooth muscle cells by inhibiting ferroptosis and inhibiting fibrosis, thereby improving bladder urination function after suprasacral spinal cord injury (SSCI).

TAG

Dual-Domain Coarse-to-Fine Progressive Estimation Network for Simultaneous Denoising, Limited-View Reconstruction, and Attenuation Correction of Cardiac SPECT

1 code implementation23 Jan 2024 Xiongchao Chen, Bo Zhou, Xueqi Guo, Huidong Xie, Qiong Liu, James S. Duncan, Albert J. Sinusas, Chi Liu

Additionally, Computed Tomography (CT) is commonly used to derive attenuation maps ($\mu$-maps) for attenuation correction (AC) of cardiac SPECT, but it will introduce additional radiation exposure and SPECT-CT misalignments.

Computed Tomography (CT) Denoising +1

DDPET-3D: Dose-aware Diffusion Model for 3D Ultra Low-dose PET Imaging

no code implementations7 Nov 2023 Huidong Xie, Weijie Gan, Bo Zhou, Xiongchao Chen, Qiong Liu, Xueqi Guo, Liang Guo, Hongyu An, Ulugbek S. Kamilov, Ge Wang, Chi Liu

We extensively evaluated DDPET-3D on 100 patients with 6 different low-dose levels (a total of 600 testing studies), and demonstrated superior performance over previous diffusion models for 3D imaging problems as well as previous noise-aware medical image denoising models.

Image Denoising Medical Image Denoising

TAI-GAN: Temporally and Anatomically Informed GAN for early-to-late frame conversion in dynamic cardiac PET motion correction

1 code implementation23 Aug 2023 Xueqi Guo, Luyao Shi, Xiongchao Chen, Bo Zhou, Qiong Liu, Huidong Xie, Yi-Hwa Liu, Richard Palyo, Edward J. Miller, Albert J. Sinusas, Bruce Spottiswoode, Chi Liu, Nicha C. Dvornek

The rapid tracer kinetics of rubidium-82 ($^{82}$Rb) and high variation of cross-frame distribution in dynamic cardiac positron emission tomography (PET) raise significant challenges for inter-frame motion correction, particularly for the early frames where conventional intensity-based image registration techniques are not applicable.

Generative Adversarial Network Image Registration +1

Distributed Decisions on Optimal Load Balancing in Loss Networks

no code implementations10 Jul 2023 Qiong Liu, Chehao Wang, Ce Zheng

When multiple users share a common link in direct transmission, packet loss and network collision may occur due to the simultaneous arrival of traffics at the source node.

All in One: Exploring Unified Vision-Language Tracking with Multi-Modal Alignment

no code implementations7 Jul 2023 Chunhui Zhang, Xin Sun, Li Liu, Yiqian Yang, Qiong Liu, Xi Zhou, Yanfeng Wang

This approach achieves feature integration in a unified backbone, removing the need for carefully-designed fusion modules and resulting in a more effective and efficient VL tracking framework.

Three-way Imbalanced Learning based on Fuzzy Twin SVM

no code implementations19 May 2023 Wanting Cai, Mingjie Cai, Qingguo Li, Qiong Liu

Three-way decision (3WD) is a powerful tool for granular computing to deal with uncertain data, commonly used in information systems, decision-making, and medical care.

Binary Classification Decision Making +1

Cross-domain Iterative Network for Simultaneous Denoising, Limited-angle Reconstruction, and Attenuation Correction of Low-dose Cardiac SPECT

no code implementations17 May 2023 Xiongchao Chen, Bo Zhou, Huidong Xie, Xueqi Guo, Qiong Liu, Albert J. Sinusas, Chi Liu

Additionally, computed tomography (CT)-derived attenuation maps ($\mu$-maps) are commonly used for SPECT attenuation correction (AC), but it will cause extra radiation exposure and SPECT-CT misalignments.

Computed Tomography (CT) Denoising

Joint Denoising and Few-angle Reconstruction for Low-dose Cardiac SPECT Using a Dual-domain Iterative Network with Adaptive Data Consistency

no code implementations17 May 2023 Xiongchao Chen, Bo Zhou, Huidong Xie, Xueqi Guo, Qiong Liu, Albert J. Sinusas, Chi Liu

To overcome these challenges, we propose a dual-domain iterative network for end-to-end joint denoising and reconstruction from low-dose and few-angle projections of cardiac SPECT.

Denoising

PointCMP: Contrastive Mask Prediction for Self-supervised Learning on Point Cloud Videos

1 code implementation CVPR 2023 Zhiqiang Shen, Xiaoxiao Sheng, Longguang Wang, Yulan Guo, Qiong Liu, Xi Zhou

Self-supervised learning can extract representations of good quality from solely unlabeled data, which is appealing for point cloud videos due to their high labelling cost.

Self-Supervised Learning Transfer Learning

Unified Noise-aware Network for Low-count PET Denoising

no code implementations28 Apr 2023 Huidong Xie, Qiong Liu, Bo Zhou, Xiongchao Chen, Xueqi Guo, Chi Liu

To obtain optimal denoised results, we may need to train multiple networks using data with different noise levels.

Denoising

FedFTN: Personalized Federated Learning with Deep Feature Transformation Network for Multi-institutional Low-count PET Denoising

1 code implementation2 Apr 2023 Bo Zhou, Huidong Xie, Qiong Liu, Xiongchao Chen, Xueqi Guo, Zhicheng Feng, Jun Hou, S. Kevin Zhou, Biao Li, Axel Rominger, Kuangyu Shi, James S. Duncan, Chi Liu

While previous federated learning (FL) algorithms enable multi-institution collaborative training without the need of aggregating local data, addressing the large domain shift in the application of multi-institutional low-count PET denoising remains a challenge and is still highly under-explored.

Denoising Personalized Federated Learning

Scene-Text Oriented Reffering Expression Comprehension

1 code implementation 2023 2022 Yuqi Bu, Liuwu Li, Jiayuan Xie, Qiong Liu, Yi Cai, Qingbao Huang, Qing Li

Abstract—Referring expression comprehension (REC) aims to identify and locate a specific object in visual scenes referred to by a natural language expression.

Object Localization Referring Expression +1

HiCo: Hierarchical Contrastive Learning for Ultrasound Video Model Pretraining

1 code implementation10 Oct 2022 Chunhui Zhang, Yixiong Chen, Li Liu, Qiong Liu, Xi Zhou

This work proposes a hierarchical contrastive learning (HiCo) method to improve the transferability for the US video model pretraining.

Contrastive Learning

Reducing Action Space: Reference-Model-Assisted Deep Reinforcement Learning for Inverter-based Volt-Var Control

no code implementations10 Oct 2022 Qiong Liu, Ye Guo, Lirong Deng, Haotian Liu, Dongyu Li, Hongbin Sun

We investigate that a large action space increases the learning difficulties of DRL and degrades the optimization performance in the process of generating data and training neural networks.

You Need to Read Again: Multi-granularity Perception Network for Moment Retrieval in Videos

1 code implementation25 May 2022 Xin Sun, Xuan Wang, Jialin Gao, Qiong Liu, Xi Zhou

Moment retrieval in videos is a challenging task that aims to retrieve the most relevant video moment in an untrimmed video given a sentence description.

Moment Retrieval Reading Comprehension +2

Reducing Learning Difficulties: One-Step Two-Critic Deep Reinforcement Learning for Inverter-based Volt-Var Control

no code implementations30 Mar 2022 Qiong Liu, Ye Guo, Lirong Deng, Haotian Liu, Dongyu Li, Hongbin Sun, Wenqi Huang

Then we design the one-step actor-critic DRL scheme which is a simplified version of recent DRL algorithms, and it avoids the issue of Q value overestimation successfully.

ELSA: Enhanced Local Self-Attention for Vision Transformer

1 code implementation23 Dec 2021 Jingkai Zhou, Pichao Wang, Fan Wang, Qiong Liu, Hao Li, Rong Jin

Self-attention is powerful in modeling long-range dependencies, but it is weak in local finer-level feature learning.

Image Classification Instance Segmentation +2

Varifocal Multiview Images: Capturing and Visual Tasks

1 code implementation19 Nov 2021 Kejun Wu, Qiong Liu, Guoan Li, Gangyi Jiang, You Yang

To overcome the limitation of multiview images on visual tasks, in this paper, we present varifocal multiview (VFMV) images with flexible DoF.

Decoupled Dynamic Filter Networks

1 code implementation CVPR 2021 Jingkai Zhou, Varun Jampani, Zhixiong Pi, Qiong Liu, Ming-Hsuan Yang

Inspired by recent advances in attention, DDF decouples a depth-wise dynamic filter into spatial and channel dynamic filters.

Image Classification Semantic Segmentation

FREA-Unet: Frequency-aware U-net for Modality Transfer

no code implementations31 Dec 2020 Hajar Emami, Qiong Liu, Ming Dong

While Positron emission tomography (PET) imaging has been widely used in diagnosis of number of diseases, it has costly acquisition process which involves radiation exposure to patients.

Image Generation

Using Sensory Time-cue to enable Unsupervised Multimodal Meta-learning

no code implementations16 Sep 2020 Qiong Liu, Yanxia Zhang

As data from IoT (Internet of Things) sensors become ubiquitous, state-of-the-art machine learning algorithms face many challenges on directly using sensor data.

Meta-Learning Object

Adaptive Feedforward Neural Network Control with an Optimized Hidden Node Distribution

1 code implementation23 May 2020 Qiong Liu, Dongyu Li, Shuzhi Sam Ge, Zhong Ouyang

Composite adaptive radial basis function neural network (RBFNN) control with a lattice distribution of hidden nodes has three inherent demerits: 1) the approximation domain of adaptive RBFNNs is difficult to be determined a priori; 2) only a partial persistence of excitation (PE) condition can be guaranteed; and 3) in general, the required number of hidden nodes of RBFNNs is enormous.

Learning Theory

Local Feature Descriptor Learning with Adaptive Siamese Network

no code implementations16 Jun 2017 Chong Huang, Qiong Liu, Yan-Ying Chen, Kwang-Ting, Cheng

Although the recent progress in the deep neural network has led to the development of learnable local feature descriptors, there is no explicit answer for estimation of the necessary size of a neural network.

Patch Matching

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