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Learning new concepts from a few of samples is a standard challenge in computer vision. The main directions to improve the learning ability of few-shot training models include (i) a robust similarity learning and (ii) generating or…

Computer Vision and Pattern Recognition · Computer Science 2019-04-09 Hongguang Zhang , Jing Zhang , Piotr Koniusz

Domain shift, the mismatch between training and testing data characteristics, causes significant degradation in the predictive performance in multi-source imaging scenarios. In medical imaging, the heterogeneity of population, scanners and…

Machine Learning · Computer Science 2021-12-21 Rongguang Wang , Pratik Chaudhari , Christos Davatzikos

Brain imaging plays a crucial role in the diagnosis and treatment of various neurological disorders, providing valuable insights into the structure and function of the brain. Techniques such as magnetic resonance imaging (MRI) and computed…

Image and Video Processing · Electrical Eng. & Systems 2025-01-23 Fatima Haimour , Rizik Al-Sayyed , Waleed Mahafza , Omar S. Al-Kadi

Generative models are increasingly used to improve the quality of medical imaging, such as reconstruction of magnetic resonance images and computed tomography. However, it is well-known that such models are susceptible to hallucinations:…

Image and Video Processing · Electrical Eng. & Systems 2026-02-24 Suna Buğday , Yvan Saeys , Jonathan Peck

Brain imaging classification is commonly approached from two perspectives: modeling the full image volume to capture global anatomical context, or constructing ROI-based graphs to encode localized and topological interactions. Although both…

Computer Vision and Pattern Recognition · Computer Science 2026-03-12 Wei Liang , Lifang He

Deep networks are now ubiquitous in large-scale multi-center imaging studies. However, the direct aggregation of images across sites is contraindicated for downstream statistical and deep learning-based image analysis due to inconsistent…

Image and Video Processing · Electrical Eng. & Systems 2021-04-16 Mengwei Ren , Neel Dey , James Fishbaugh , Guido Gerig

Multiple medical institutions collaboratively training a model using federated learning (FL) has become a promising solution for maximizing the potential of data-driven models, yet the non-independent and identically distributed (non-iid)…

Image and Video Processing · Electrical Eng. & Systems 2022-04-26 Meirui Jiang , Zirui Wang , Qi Dou

Image segmentation is an important task in many medical applications. Methods based on convolutional neural networks attain state-of-the-art accuracy; however, they typically rely on supervised training with large labeled datasets. Labeling…

Computer Vision and Pattern Recognition · Computer Science 2019-04-09 Amy Zhao , Guha Balakrishnan , Frédo Durand , John V. Guttag , Adrian V. Dalca

A major data pre-processing step for large, multi-site studies is to handle site effects by harmonizing data, generating a dataset that enables more powerful analyses and more robust algorithms. There is a wide variety of data harmonization…

Image and Video Processing · Electrical Eng. & Systems 2024-10-28 Tom Osika , Ebrahim Ebrahim , Martin Styner , Marc Niethammer , Thomas Sawyer , Andinet Enquobahrie

Photoacoustic imaging combines the high contrast of optical imaging with the deep penetration depth of ultrasonic imaging, showing great potential in cerebrovascular disease detection. However, the ultrasonic wave suffers strong attenuation…

Medical Physics · Physics 2025-09-08 Pengcheng Wan , Fan Zhang , Yuting Shen , Hulin Zhao , Xiran Cai , Xiaohua Feng , Fei Gao

Magnetic Resonance Imaging (MRI) of the brain has been used to investigate a wide range of neurological disorders, but data acquisition can be expensive, time-consuming, and inconvenient. Multi-site studies present a valuable opportunity to…

Computer Vision and Pattern Recognition · Computer Science 2018-04-13 Harrison Nguyen , Richard W. Morris , Anthony W. Harris , Mayuresh S. Korgoankar , Fabio Ramos

Diffusion magnetic resonance imaging is a noninvasive imaging technique that can indirectly infer the microstructure of tissues and provide metrics which are subject to normal variability across subjects. Potentially abnormal values or…

Image and Video Processing · Electrical Eng. & Systems 2020-08-28 Samuel St-Jean , Max A. Viergever , Alexander Leemans

Multi-instance learning is common for computer vision tasks, especially in biomedical image processing. Traditional methods for multi-instance learning focus on designing feature aggregation methods and multi-instance classifiers, where the…

Computer Vision and Pattern Recognition · Computer Science 2021-03-18 Yanlun Tu , Houchao Lei , Wei Long , Yang Yang

Multi-site MRI studies often suffer from site-specific variations arising from differences in methodology, hardware, and acquisition protocols, thereby compromising accuracy and reliability in clinical AI/ML tasks. We present PRISM…

Image and Video Processing · Electrical Eng. & Systems 2024-11-12 Sarang Galada , Tanurima Halder , Kunal Deo , Ram P Krish , Kshitij Jadhav

State-of-the-art deep learning algorithms generally require large amounts of data for model training. Lack thereof can severely deteriorate the performance, particularly in scenarios with fine-grained boundaries between categories. To this…

Computer Vision and Pattern Recognition · Computer Science 2018-06-15 Frederik Pahde , Patrick Jähnichen , Tassilo Klein , Moin Nabi

Large-scale automated morphometric analysis of brain MRI is limited by the thick-slice, anisotropic acquisitions prevalent in routine clinical practice. Existing generative super-resolution (SR) methods produce visually compelling isotropic…

High-quality magnetic resonance (MR) image, i.e., with near isotropic voxel spacing, is desirable in various scenarios of medical image analysis. However, many MR acquisitions use large inter-slice spacing in clinical practice. In this…

Image and Video Processing · Electrical Eng. & Systems 2021-08-18 Kai Xuan , Liping Si , Lichi Zhang , Zhong Xue , Yining Jiao , Weiwu Yao , Dinggang Shen , Dijia Wu , Qian Wang

The potential for augmenting the segmentation of brain tumors through the use of few-shot learning is vast. Although several deep learning networks (DNNs) demonstrate promising results in terms of segmentation, they require a substantial…

Image and Video Processing · Electrical Eng. & Systems 2024-01-11 Ahmed Ayman

The variability introduced by differences in MRI scanner models, acquisition protocols, and imaging sites hinders consistent analysis and generalizability across multicenter studies. We present a novel image-based harmonization framework…

Computer Vision and Pattern Recognition · Computer Science 2025-10-28 Luca Caldera , Lara Cavinato , Francesca Ieva

In MRI studies, the aggregation of imaging data from multiple acquisition sites enhances sample size but may introduce site-related variabilities that hinder consistency in subsequent analyses. Deep learning methods for image translation…

Computer Vision and Pattern Recognition · Computer Science 2024-11-15 Vincent Roca , Grégory Kuchcinski , Jean-Pierre Pruvo , Dorian Manouvriez , Renaud Lopes