Search Results for author: YunMei Chen

Found 9 papers, 3 papers with code

Learned Alternating Minimization Algorithm for Dual-domain Sparse-View CT Reconstruction

1 code implementation5 Jun 2023 Chi Ding, Qingchao Zhang, Ge Wang, Xiaojing Ye, YunMei Chen

We propose a novel Learned Alternating Minimization Algorithm (LAMA) for dual-domain sparse-view CT image reconstruction.

Image Reconstruction

STPDnet: Spatial-temporal convolutional primal dual network for dynamic PET image reconstruction

no code implementations8 Mar 2023 Rui Hu, Jianan Cui, Chengjin Yu, YunMei Chen, Huafeng Liu

Dynamic positron emission tomography (dPET) image reconstruction is extremely challenging due to the limited counts received in individual frame.

Image Reconstruction

A Learnable Variational Model for Joint Multimodal MRI Reconstruction and Synthesis

no code implementations8 Apr 2022 Wanyu Bian, Qingchao Zhang, Xiaojing Ye, YunMei Chen

In this paper, we propose a novel deep-learning model for joint reconstruction and synthesis of multi-modal MRI using incomplete k-space data of several source modalities as inputs.

Anatomy Bilevel Optimization +1

An Optimization-Based Meta-Learning Model for MRI Reconstruction with Diverse Dataset

no code implementations2 Oct 2021 Wanyu Bian, YunMei Chen, Xiaojing Ye, Qingchao Zhang

In this model, the learnable regularization function contains a task-invariant common feature encoder and task-specific learner represented by a shallow network.

Bilevel Optimization Meta-Learning +2

An Optimal Control Framework for Joint-channel Parallel MRI Reconstruction without Coil Sensitivities

1 code implementation20 Sep 2021 Wanyu Bian, YunMei Chen, Xiaojing Ye

We cast the reconstruction network as a structured discrete-time optimal control system, resulting in an optimal control formulation of parameter training where the parameters of the objective function play the role of control variables.

MRI Reconstruction

Provably Convergent Learned Inexact Descent Algorithm for Low-Dose CT Reconstruction

no code implementations27 Apr 2021 Qingchao Zhang, Mehrdad Alvandipour, Wenjun Xia, Yi Zhang, Xiaojing Ye, YunMei Chen

We propose a provably convergent method, called Efficient Learned Descent Algorithm (ELDA), for low-dose CT (LDCT) reconstruction.

Learnable Descent Algorithm for Nonsmooth Nonconvex Image Reconstruction

no code implementations22 Jul 2020 Yunmei Chen, Hongcheng Liu, Xiaojing Ye, Qingchao Zhang

We propose a general learning based framework for solving nonsmooth and nonconvex image reconstruction problems.

Image Reconstruction

Projection Onto A Simplex

2 code implementations31 Jan 2011 Yunmei Chen, Xiaojing Ye

This mini-paper presents a fast and simple algorithm to compute the projection onto the canonical simplex $\triangle^n$.

Optimization and Control 49M37 G.1.6

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