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Image restoration is typically addressed through non-convex inverse problems, which are often solved using first-order block-wise splitting methods. In this paper, we consider a general type of non-convex optimisation model that captures…

Fourier ptychography (FP) is a newly developed computational imaging approach that achieves both high resolution and wide field of view by stitching a series of low-resolution images captured under angle-varied illumination. So far, many…

图像与视频处理 · 电气工程与系统科学 2019-09-20 Yongbing Zhang , Yangzhe Liu , Xiu Li , Shaowei Jiang , Krishna Dixit , Xinfeng Zhang , Xiangyang Ji

In recent years, numerous vision and learning tasks have been (re)formulated as nonconvex and nonsmooth programmings(NNPs). Although some algorithms have been proposed for particular problems, designing fast and flexible optimization…

计算机视觉与模式识别 · 计算机科学 2017-07-03 Yiyang Wang , Risheng Liu , Xiaoliang Song , Zhixun Su

Blur and noise corrupting Computed Tomography (CT) images can hide or distort small but important details, negatively affecting the diagnosis. In this paper, we present a novel gradient-based Plug-and-Play algorithm, constructed on the…

Training-free diffusion priors enable inverse-problem solvers without retraining, but for nonlinear forward operators data consistency often relies on repeated derivatives or inner optimization/MCMC loops with conservative step sizes,…

机器学习 · 计算机科学 2026-04-15 Minwoo Kim , Seunghyeok Shin , Hongki Lim

Deep learning based unmixing methods have received great attention in recent years and achieve remarkable performance. These methods employ a data-driven approach to extract structure features from hyperspectral image, however, they tend to…

图像与视频处理 · 电气工程与系统科学 2024-09-10 Min Zhao , Linruize Tang , Jie Chen

Magnetic Particle Imaging (MPI) is a promising tomographic technique for visualizing the spatio-temporal distribution of superparamagnetic nanoparticles, with applications ranging from cancer detection to real-time cardiovascular…

计算机视觉与模式识别 · 计算机科学 2026-01-23 Vladyslav Gapyak , Thomas März , Andreas Weinmann

While convolutional neural networks (CNN) have achieved impressive performance on various classification/recognition tasks, they typically consist of a massive number of parameters. This results in significant memory requirement as well as…

计算机视觉与模式识别 · 计算机科学 2019-05-14 Pravendra Singh , Vinay Kumar Verma , Piyush Rai , Vinay P. Namboodiri

Hyperspectral images are typically composed of hundreds of narrow and contiguous spectral bands, each containing information regarding the material composition of the imaged scene. However, these images can be affected by various sources of…

计算机视觉与模式识别 · 计算机科学 2025-01-15 Shuo Li , Mehrdad Yaghoobi

We propose a new plug-and-play priors (PnP) based MR image reconstruction method that systematically enforces data consistency while also exploiting deep-learning priors. Our prior is specified through a convolutional neural network (CNN)…

图像与视频处理 · 电气工程与系统科学 2022-04-12 Weijie Gan , Cihat Eldeniz , Jiaming Liu , Sihao Chen , Hongyu An , Ulugbek S. Kamilov

Recently, DETR pioneered the solution of vision tasks with transformers, it directly translates the image feature map into the object detection result. Though effective, translating the full feature map can be costly due to redundant…

计算机视觉与模式识别 · 计算机科学 2022-03-03 Tao Wang , Li Yuan , Yunpeng Chen , Jiashi Feng , Shuicheng Yan

Consistency models (CMs) learn a consistent mapping from multiple noise levels to the data endpoint and can therefore perform generative inference in one or a few steps. This property makes them attractive as learned priors for low-latency…

信号处理 · 电气工程与系统科学 2026-04-28 Jinlong Li , Peng Yang , Zehui Xiong , Xianbin Cao

Imaging inverse problems aim to recover high-dimensional signals from undersampled, noisy measurements, a fundamentally ill-posed task with infinite solutions in the null-space of the sensing operator. To resolve this ambiguity, prior…

计算机视觉与模式识别 · 计算机科学 2026-04-16 Roman Jacome , Romario Gualdrón-Hurtado , Leon Suarez , Henry Arguello

Removing optical and atmospheric blur from galaxy images significantly improves galaxy shape measurements for weak gravitational lensing and galaxy evolution studies. This ill-posed linear inverse problem is usually solved with…

天体物理仪器与方法 · 物理学 2023-03-29 Tianao Li , Emma Alexander

This paper investigates the convergence properties and applications of the three-operator splitting method, also known as Davis-Yin splitting (DYS) method, integrated with extrapolation and Plug-and-Play (PnP) denoiser within a nonconvex…

数值分析 · 数学 2024-06-05 Zhongming Wu , Chaoyan Huang , Tieyong Zeng

Deep model-based architectures (DMBAs) are widely used in imaging inverse problems to integrate physical measurement models and learned image priors. Plug-and-play priors (PnP) and deep equilibrium models (DEQ) are two DMBA frameworks that…

图像与视频处理 · 电气工程与系统科学 2022-11-02 Junhao Hu , Shirin Shoushtari , Zihao Zou , Jiaming Liu , Zhixin Sun , Ulugbek S. Kamilov

Recently, the degenerate preconditioned proximal point (PPP) method provides a unified and flexible framework for designing and analyzing operator-splitting algorithms such as Douglas-Rachford (DR). However, the degenerate PPP method…

计算机视觉与模式识别 · 计算机科学 2025-11-24 Shuchang Zhang , Hui Zhang , Hongxia Wang

The Retinex model is one of the most representative and effective methods for low-light image enhancement. However, the Retinex model does not explicitly tackle the noise problem, and shows unsatisfactory enhancing results. In recent years,…

图像与视频处理 · 电气工程与系统科学 2023-02-20 Tingting Wu , Wenna Wu , Ying Yang , Feng-Lei Fan , Tieyong Zeng

Infinite-horizon optimal control of constrained piecewise affine (PWA) systems has been approximately addressed by hybrid model predictive control (MPC), which, however, has computational limitations, both in offline design and online…

系统与控制 · 电气工程与系统科学 2024-12-16 Kanghui He , Shengling Shi , Ton van den Boom , Bart De Schutter

The performance of Deep Neural Networks (DNNs) keeps elevating in recent years with increasing network depth and width. To enable DNNs on edge devices like mobile phones, researchers proposed several network compression methods including…

计算机视觉与模式识别 · 计算机科学 2020-01-27 Yuhui Xu , Yuxi Li , Shuai Zhang , Wei Wen , Botao Wang , Yingyong Qi , Yiran Chen , Weiyao Lin , Hongkai Xiong