Search Results for author: Qingchao Zhang

Found 8 papers, 1 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

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

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

A Novel Learnable Gradient Descent Type Algorithm for Non-convex Non-smooth Inverse Problems

no code implementations15 Mar 2020 Qingchao Zhang, Xiaojing Ye, Hongcheng Liu, Yun-Mei Chen

Optimization algorithms for solving nonconvex inverse problem have attracted significant interests recently.

Image Reconstruction

Extra Proximal-Gradient Inspired Non-local Network

no code implementations17 Nov 2019 Qingchao Zhang, Yun-Mei Chen

Variational method and deep learning method are two mainstream powerful approaches to solve inverse problems in computer vision.

Image Reconstruction

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