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We present the generalized iterative residual fitting (IRF) for the computation of the spherical harmonic transform (SHT) of band-limited signals on the sphere. The proposed method is based on the partitioning of the subspace of…

信息论 · 计算机科学 2017-09-11 Usama Elahi , Zubair Khalid , Rodney A. Kennedy , Jason D. McEwen

Pseudo-healthy image inpainting is an essential preprocessing step for analyzing pathological brain MRI scans. Most current inpainting methods favor slice-wise 2D models for their high in-plane fidelity, but their independence across slices…

图像与视频处理 · 电气工程与系统科学 2025-07-25 Dou Hoon Kwark , Shirui Luo , Xiyue Zhu , Yudu Li , Zhi-Pei Liang , Volodymyr Kindratenko

The lack of standardization is a prominent issue in magnetic resonance (MR) imaging. This often causes undesired contrast variations in the acquired images due to differences in hardware and acquisition parameters. In recent years, image…

We present Brain Harmony (BrainHarmonix), the first multimodal brain foundation model that unifies structural morphology and functional dynamics into compact 1D token representations. The model was pretrained on two of the largest…

In optical flow estimation task, coarse-to-fine (C2F) warping strategy is widely used to deal with the large displacement problem and provides efficiency and speed. However, limited by the small search range between the first images and…

计算机视觉与模式识别 · 计算机科学 2020-11-20 Suihanjin Yu , Youmin Zhang , Chen Wang , Xiao Bai , Liang Zhang , Edwin R. Hancock

Modeling the evolution of high-dimensional systems from limited snapshot observations at irregular time points poses a significant challenge in quantitative biology and related fields. Traditional approaches often rely on dimensionality…

机器学习 · 计算机科学 2025-08-07 Justin Lee , Behnaz Moradijamei , Heman Shakeri

In this paper, we propose mathematical models for reconstructing the optical flow in time-harmonic elastography. In this image acquisition technique, the object undergoes a special time-harmonic oscillation with known frequency so that only…

Wearable sensor-based human activity recognition (HAR) has been a research focus in the field of ubiquitous and mobile computing for years. In recent years, many deep models have been applied to HAR problems. However, deep learning methods…

信号处理 · 电气工程与系统科学 2020-12-16 Yujiao Hao , Boyu Wang , Rong Zheng

A wealth of cosmological and astrophysical information is expected from many ongoing and upcoming large-scale surveys. It is crucial to prepare for these surveys now and develop tools that can efficiently extract most information. We…

Aggregating multi-subject functional magnetic resonance imaging (fMRI) data is indispensable for generating valid and general inferences from patterns distributed across human brains. The disparities in anatomical structures and functional…

机器学习 · 计算机科学 2019-11-20 Weida Li , Mingxia Liu , Fang Chen , Daoqiang Zhang

Accuracy and consistency are two key factors in computer-assisted magnetic resonance (MR) image analysis. However, contrast variation from site to site caused by lack of standardization in MR acquisition impedes consistent measurements. In…

图像与视频处理 · 电气工程与系统科学 2021-03-25 Lianrui Zuo , Blake E. Dewey , Aaron Carass , Yihao Liu , Yufan He , Peter A. Calabresi , Jerry L. Prince

The method of geometric harmonics is adapted to the situation of incomplete data by means of the iterated geometric harmonics (IGH) scheme. The method is tested on natural and synthetic data sets with 50--500 data points and dimensionality…

机器学习 · 计算机科学 2014-11-05 Chad Eckman , Jonathan A. Lindgren , Erin P. J. Pearse , David J. Sacco , Zachariah Zhang

Recently, Multi-Contrast MR Reconstruction (MCMR) has emerged as a hot research topic that leverages high-quality auxiliary modalities to reconstruct undersampled target modalities of interest. However, existing methods often struggle to…

计算机视觉与模式识别 · 计算机科学 2025-12-08 Jialin Li , Yiwei Ren , Kai Pan , Dong Wei , Pujin Cheng , Xian Wu , Xiaoying Tang

In a scenario where multi-modal cameras are operating together, the problem of working with non-aligned images cannot be avoided. Yet, existing image fusion algorithms rely heavily on strictly registered input image pairs to produce more…

计算机视觉与模式识别 · 计算机科学 2024-01-02 Zeyang Zhang , Hui Li , Tianyang Xu , Xiaojun Wu , Josef Kittler

Multi-rater medical image segmentation captures the inherent ambiguity of clinical interpretation, where diagnostic boundaries vary across experts and imaging devices. Existing approaches often reduce this diversity to consensus labels or…

计算机视觉与模式识别 · 计算机科学 2026-05-12 Sanaz Karimijafarbigloo , Armin Khosravi , Alireza Kheyrkhah , Reza Azad , Mauricio Reyes , Dorit Merhof

Electroencephalography (EEG) decoding requires models that can effectively extract and integrate complex temporal, spectral, and spatial features from multichannel signals. To address this challenge, we propose a lightweight and…

人机交互 · 计算机科学 2026-01-21 Haodong Zhang , Jiapeng Zhu , Yitong Chen , Hongqi Li

Image denoising and artefact removal are complex inverse problems admitting multiple valid solutions. Unsupervised diversity restoration, that is, obtaining a diverse set of possible restorations given a corrupted image, is important for…

图像与视频处理 · 电气工程与系统科学 2022-02-25 Mangal Prakash , Mauricio Delbracio , Peyman Milanfar , Florian Jug

Precision pathology relies on detecting fine-grained morphological abnormalities within specific Regions of Interest (ROIs), as these local, texture-rich cues - rather than global slide contexts - drive expert diagnostic reasoning. While…

计算机视觉与模式识别 · 计算机科学 2026-01-27 Chunze Yang , Wenjie Zhao , Yue Tang , Junbo Lu , Jiusong Ge , Qidong Liu , Zeyu Gao , Chen Li

Reconstructing ghosting-free high dynamic range (HDR) images of dynamic scenes from a set of multi-exposure images is a challenging task, especially with large object motion and occlusions, leading to visible artifacts using existing…

计算机视觉与模式识别 · 计算机科学 2022-07-07 Qian Ye , Masanori Suganuma , Jun Xiao , Takayuki Okatani

While different variants of perceptual losses have been employed in super-resolution literature to synthesize more realistic, appealing, and detailed high-resolution images, most are convolutional neural networks-based, causing information…

计算机视觉与模式识别 · 计算机科学 2025-06-24 Shoaib Meraj Sami , Md Mahedi Hasan , Mohammad Saeed Ebrahimi Saadabadi , Jeremy Dawson , Nasser Nasrabadi , Raghuveer Rao