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We introduce SPECTRE, a fully transformer-based foundation model for volumetric computed tomography (CT). Our Self-Supervised & Cross-Modal Pretraining for CT Representation Extraction (SPECTRE) approach utilizes scalable 3D Vision…

计算机视觉与模式识别 · 计算机科学 2026-03-31 Cris Claessens , Christiaan Viviers , Giacomo D'Amicantonio , Egor Bondarev , Fons van der Sommen

We propose a unified deep meta-learning framework for accelerated magnetic resonance imaging (MRI) that jointly addresses multi-coil reconstruction and cross-modality synthesis. Motivated by the limitations of conventional methods in…

最优化与控制 · 数学 2026-03-10 Merham Fouladvand , Peuroly Batra

Following the success of deep learning in a wide range of applications, neural network-based machine learning techniques have received interest as a means of accelerating magnetic resonance imaging (MRI). A number of ideas inspired by deep…

信号处理 · 电气工程与系统科学 2019-04-03 Florian Knoll , Kerstin Hammernik , Chi Zhang , Steen Moeller , Thomas Pock , Daniel K. Sodickson , Mehmet Akcakaya

Purpose: To develop a method for rapid sub-millimeter T1, T2, T2* and QSM mapping in a single scan using multi-contrast Learned Acquisition and Reconstruction Optimization (mcLARO). Methods: A pulse sequence was developed by interleaving…

图像与视频处理 · 电气工程与系统科学 2023-11-28 Jinwei Zhang , Thanh D. Nguyen , Eddy Solomon , Chao Li , Qihao Zhang , Jiahao Li , Hang Zhang , Pascal Spincemaille , Yi Wang

Stereo image super-resolution (SSR) aims to enhance high-resolution details by leveraging information from stereo image pairs. However, existing stereo super-resolution (SSR) upsampling methods (e.g., pixel shuffle) often overlook…

图像与视频处理 · 电气工程与系统科学 2025-07-08 Yi Liu , Xinyi Liu , Yi Wan , Panwang Xia , Qiong Wu , Yongjun Zhang

Limited by imaging systems, the reconstruction of Magnetic Resonance Imaging (MRI) images from partial measurement is essential to medical imaging research. Benefiting from the diverse and complementary information of multi-contrast MR…

图像与视频处理 · 电气工程与系统科学 2023-07-11 Jiamiao Zhang , Yichen Chi , Jun Lyu , Wenming Yang , Yapeng Tian

Self-supervised deep learning has accelerated 2D natural image analysis but remains difficult to translate into 3D MRI, where data are scarce and pre-trained 2D backbones cannot capture volumetric context. We present a…

计算机视觉与模式识别 · 计算机科学 2025-07-30 Liam Chalcroft , Jenny Crinion , Cathy J. Price , John Ashburner

Magnetic resonance imaging (MRI) enables 3-D imaging of anatomical structures. However, the acquisition of MR volumes with high spatial resolution leads to long scan times. To this end, we propose volumetric super-resolution forests (VSRF)…

计算机视觉与模式识别 · 计算机科学 2018-02-16 Aline Sindel , Katharina Breininger , Johannes Käßer , Andreas Hess , Andreas Maier , Thomas Köhler

3D Gaussian Splatting (3DGS) enables high-quality novel view synthesis, motivating interest in generating higher-resolution renders than those available during training. A natural strategy is to apply super-resolution (SR) to low-resolution…

计算机视觉与模式识别 · 计算机科学 2026-04-01 Pranav Asthana , Alex Hanson , Allen Tu , Tom Goldstein , Matthias Zwicker , Amitabh Varshney

Endoscopic ultrasound (EUS) imaging has a trade-off between resolution and penetration depth. By considering the in-vivo characteristics of human organs, it is necessary to provide clinicians with appropriate hardware specifications for…

图像与视频处理 · 电气工程与系统科学 2023-09-14 Hah Min Lew , Jae Seong Kim , Moon Hwan Lee , Jaegeun Park , Sangyeon Youn , Hee Man Kim , Jihun Kim , Jae Youn Hwang

Recently, lots of deep networks are proposed to improve the quality of predicted super-resolution (SR) images, due to its widespread use in several image-based fields. However, with these networks being constructed deeper and deeper, they…

计算机视觉与模式识别 · 计算机科学 2020-03-10 Wei. Lin , Junyu. Gao , Qi. Wang , Xuelong. Li

Instance segmentation in electron microscopy (EM) volumes is tough due to complex shapes and sparse annotations. Self-supervised learning helps but still struggles with intricate visual patterns in EM. To address this, we propose a…

计算机视觉与模式识别 · 计算机科学 2023-09-06 Yinda Chen , Wei Huang , Xiaoyu Liu , Shiyu Deng , Qi Chen , Zhiwei Xiong

Transfer learning has remarkably improved computer vision. These advances also promise improvements in neuroimaging, where training set sizes are often small. However, various difficulties arise in directly applying models pretrained on…

Deep learning approaches have shown promising performance for compressed sensing-based Magnetic Resonance Imaging. While deep neural networks trained with mean squared error (MSE) loss functions can achieve high peak signal to noise ratio,…

Adaptation methods are developed to adapt depth foundation models to endoscopic depth estimation recently. However, such approaches typically under-perform training since they limit the parameter search to a low-rank subspace and alter the…

计算机视觉与模式识别 · 计算机科学 2024-10-11 Shuting Zhao , Chenkang Du , Kristin Qi , Xinrong Chen , Xinhan Di

The nature of thick-slice scanning causes severe inter-slice discontinuities of 3D medical images, and the vanilla 2D/3D convolutional neural networks (CNNs) fail to represent sparse inter-slice information and dense intra-slice information…

图像与视频处理 · 电气工程与系统科学 2022-05-11 Zhangfu Dong , Yuting He , Xiaoming Qi , Yang Chen , Huazhong Shu , Jean-Louis Coatrieux , Guanyu Yang , Shuo Li

We consider a variational model for single-image super-resolution based on the assumption that the gradient of the target image is sparse. We enforce this assumption by considering both an isotropic and an anisotropic $\ell^0$…

图像与视频处理 · 电气工程与系统科学 2020-12-17 Pasquale Cascarano , Luca Calatroni , Elena Loli Piccolomini

Parallel imaging is ubiquitous in MRI, enabling diverse applications such as ultra-high-resolution functional and quantitative imaging with greater temporal resolution or reduced scan times respectively. Successful unfolding is contingent…

INTRODUCTION | Fully supervised 3D segmentation of high-resolution ex vivo MRI is limited by the prohibitive cost of volumetric annotation, forcing reliance on sparse 2D slices. Weakly supervised Sparse-to-Dense frameworks bridge this gap,…

图像与视频处理 · 电气工程与系统科学 2026-05-14 Paul Hoareau , Kuan Yi Wang , Brandon Bujak , Roy Sun , Govind Nair , Irene Cortese , Charidimos Tsagkas , Daniel Reich , Julien Cohen-Adad

While enabling accelerated acquisition and improved reconstruction accuracy, current deep MRI reconstruction networks are typically supervised, require fully sampled data, and are limited to Cartesian sampling patterns. These factors limit…

图像与视频处理 · 电气工程与系统科学 2023-02-21 Bo Zhou , Jo Schlemper , Neel Dey , Seyed Sadegh Mohseni Salehi , Kevin Sheth , Chi Liu , James S. Duncan , Michal Sofka