Search Results for author: Junyu Chen

Found 31 papers, 12 papers with code

From Registration Uncertainty to Segmentation Uncertainty

no code implementations8 Mar 2024 Junyu Chen, Yihao Liu, Shuwen Wei, Zhangxing Bian, Aaron Carass, Yong Du

Here, we propose a novel framework to concurrently estimate both the epistemic and aleatoric segmentation uncertainties for image registration.

Image Registration Segmentation

GenH2R: Learning Generalizable Human-to-Robot Handover via Scalable Simulation, Demonstration, and Imitation

no code implementations1 Jan 2024 Zifan Wang, Junyu Chen, Ziqing Chen, Pengwei Xie, Rui Chen, Li Yi

We further introduce a distillation-friendly demonstration generation method that automatically generates a million high-quality demonstrations suitable for learning.

Grasp Generation Imitation Learning

Semidefinite Relaxations of the Gromov-Wasserstein Distance

no code implementations22 Dec 2023 Junyu Chen, Binh T. Nguyen, Yong Sheng Soh

The Gromov-Wasserstein (GW) distance is a variant of the optimal transport problem that allows one to match objects between incomparable spaces.

Semantic Complete Scene Forecasting from a 4D Dynamic Point Cloud Sequence

no code implementations13 Dec 2023 Zifan Wang, Zhuorui Ye, Haoran Wu, Junyu Chen, Li Yi

To tackle this challenging problem, we properly model the synergetic relationship between future forecasting and semantic scene completion through a novel network named SCSFNet.

Learning node representation via Motif Coarsening

1 code implementation journal 2023 Junyu Chen, Qianqian Xu, Zhiyong Yang, Ke Ma, Xiaochun Cao, Qingming Huang

For the motif-based node representation learning process, we propose a Motif Coarsening strategy for incorporating motif structure into the graph representation learning process.

Graph Representation Learning

MomentaMorph: Unsupervised Spatial-Temporal Registration with Momenta, Shooting, and Correction

no code implementations5 Aug 2023 Zhangxing Bian, Shuwen Wei, Yihao Liu, Junyu Chen, Jiachen Zhuo, Fangxu Xing, Jonghye Woo, Aaron Carass, Jerry L. Prince

We introduce a novel "momenta, shooting, and correction" framework for Lagrangian motion estimation in the presence of repetitive patterns and large motion.

Motion Estimation

Learning to Evaluate the Artness of AI-generated Images

no code implementations8 May 2023 Junyu Chen, Jie An, Hanjia Lyu, Jiebo Luo

Assessing the artness of AI-generated images continues to be a challenge within the realm of image generation.

Image Generation

Predicting Adverse Neonatal Outcomes for Preterm Neonates with Multi-Task Learning

no code implementations28 Mar 2023 Jingyang Lin, Junyu Chen, Hanjia Lyu, Igor Khodak, Divya Chhabra, Colby L Day Richardson, Irina Prelipcean, Andrew M Dylag, Jiebo Luo

In this work, we first analyze the correlations between three adverse neonatal outcomes and then formulate the diagnosis of multiple neonatal outcomes as a multi-task learning (MTL) problem.

Feature Importance Multi-Task Learning

An investigation of licensing of datasets for machine learning based on the GQM model

no code implementations24 Mar 2023 Junyu Chen, Norihiro Yoshida, Hiroaki Takada

And in the development of machine learning systems, the most widely used are publicly available datasets.

Deformable Cross-Attention Transformer for Medical Image Registration

no code implementations10 Mar 2023 Junyu Chen, Yihao Liu, Yufan He, Yong Du

Transformers have recently shown promise for medical image applications, leading to an increasing interest in developing such models for medical image registration.

Image Registration Medical Image Registration

Spatially-varying Regularization with Conditional Transformer for Unsupervised Image Registration

no code implementations10 Mar 2023 Junyu Chen, Yihao Liu, Yufan He, Yong Du

In the past, optimization-based registration models have used spatially-varying regularization to account for deformation variations in different image regions.

Unsupervised Image Registration

SwinCross: Cross-modal Swin Transformer for Head-and-Neck Tumor Segmentation in PET/CT Images

no code implementations8 Feb 2023 Gary Y. Li, Junyu Chen, Se-In Jang, Kuang Gong, Quanzheng Li

Inspired by the recent success of Vision Transformers and advances in multi-modal image analysis, we propose a novel segmentation model, debuted, Cross-Modal Swin Transformer (SwinCross), with cross-modal attention (CMA) module to incorporate cross-modal feature extraction at multiple resolutions. To validate the effectiveness of the proposed method, we performed experiments on the HECKTOR 2021 challenge dataset and compared it with the nnU-Net (the backbone of the top-5 methods in HECKTOR 2021) and other state-of-the-art transformer-based methods such as UNETR, and Swin UNETR.

Image Segmentation Segmentation +1

LeaF: Learning Frames for 4D Point Cloud Sequence Understanding

no code implementations ICCV 2023 Yunze Liu, Junyu Chen, Zekai Zhang, Jingwei Huang, Li Yi

With such frames, we can factorize geometry and motion to facilitate a feature-space geometric reconstruction for more effective 4D learning.

Descriptive

Investigation of Network Architecture for Multimodal Head-and-Neck Tumor Segmentation

no code implementations21 Dec 2022 Ye Li, Junyu Chen, Se-In Jang, Kuang Gong, Quanzheng Li

Inspired by the recent success of Transformers for Natural Language Processing and vision Transformer for Computer Vision, many researchers in the medical imaging community have flocked to Transformer-based networks for various main stream medical tasks such as classification, segmentation, and estimation.

Segmentation Tumor Segmentation

On Finite Difference Jacobian Computation in Deformable Image Registration

1 code implementation12 Dec 2022 Yihao Liu, Junyu Chen, Shuwen Wei, Aaron Carass, Jerry Prince

For digital transformations, |J| is commonly approximated using a central difference, but this strategy can yield positive |J|'s for transformations that are clearly not diffeomorphic -- even at the voxel resolution level.

Image Registration

Improving Visual-textual Sentiment Analysis by Fusing Expert Features

no code implementations23 Nov 2022 Junyu Chen, Jie An, Hanjia Lyu, Jiebo Luo

Visual-textual sentiment analysis aims to predict sentiment with the input of a pair of image and text.

Sentiment Analysis

Spach Transformer: Spatial and Channel-wise Transformer Based on Local and Global Self-attentions for PET Image Denoising

1 code implementation7 Sep 2022 Se-In Jang, Tinsu Pan, Ye Li, Pedram Heidari, Junyu Chen, Quanzheng Li, Kuang Gong

In this work, we proposed an efficient spatial and channel-wise encoder-decoder transformer, Spach Transformer, that can leverage spatial and channel information based on local and global MSAs.

Image Denoising

A Noise-level-aware Framework for PET Image Denoising

no code implementations15 Mar 2022 Ye Li, Jianan Cui, Junyu Chen, Guodong Zeng, Scott Wollenweber, Floris Jansen, Se-In Jang, Kyungsang Kim, Kuang Gong, Quanzheng Li

Our hypothesis is that by explicitly providing the local relative noise level of the input image to a deep convolutional neural network (DCNN), the DCNN can outperform itself trained on image appearance only.

Image Denoising SSIM

TransMorph: Transformer for unsupervised medical image registration

1 code implementation19 Nov 2021 Junyu Chen, Eric C. Frey, Yufan He, William P. Segars, Ye Li, Yong Du

Recently Vision Transformer architectures have been proposed to address the shortcomings of ConvNets and have produced state-of-the-art performances in many medical imaging applications.

Image Registration Medical Image Registration

Targeted Gradient Descent: A Novel Method for Convolutional Neural Networks Fine-tuning and Online-learning

no code implementations29 Sep 2021 Junyu Chen, Evren Asma, Chung Chan

In this study, we present Targeted Gradient Descent (TGD), a novel fine-tuning method that can extend a pre-trained network to a new task without revisiting data from the previous task while preserving the knowledge acquired from previous training.

Image Denoising

ViT-V-Net: Vision Transformer for Unsupervised Volumetric Medical Image Registration

1 code implementation13 Apr 2021 Junyu Chen, Yufan He, Eric C. Frey, Ye Li, Yong Du

However, the performances of ConvNets are still limited by lacking the understanding of long-range spatial relations in an image.

Image Classification Image Registration +3

Medical Image Segmentation via Unsupervised Convolutional Neural Network

1 code implementation MIDL 2019 Junyu Chen, Eric C. Frey

For the majority of the learning-based segmentation methods, a large quantity of high-quality training data is required.

Image Segmentation Medical Image Segmentation +2

Generating Anthropomorphic Phantoms Using Fully Unsupervised Deformable Image Registration with Convolutional Neural Networks

1 code implementation6 Dec 2019 Junyu Chen, Ye Li, Yong Du, Eric C. Frey

In this work, we present a novel image registration method for creating highly anatomically detailed anthropomorphic phantoms from a single digital phantom.

Anatomy Image Registration +2

Feature-Based Image Clustering and Segmentation Using Wavelets

1 code implementation5 Jul 2019 Junyu Chen, Eric C. Frey

Pixel intensity is a widely used feature for clustering and segmentation algorithms, the resulting segmentation using only intensity values might suffer from noises and lack of spatial context information.

Clustering Image Clustering +2

Cannot find the paper you are looking for? You can Submit a new open access paper.