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Multi-contrast image registration is a challenging task due to the complex intensity relationships between different imaging contrasts. Conventional image registration methods are typically based on iterative optimizations for each input…

计算机视觉与模式识别 · 计算机科学 2024-08-13 Yinsong Wang , Siyi Du , Shaoming Zheng , Xinzhe Luo , Chen Qin

Contrast agents in dynamic contrast enhanced magnetic resonance imaging allow to localize tumors and observe their contrast kinetics, which is essential for cancer characterization and respective treatment decision-making. However, contrast…

Recently, deep learning (DL)-based methods have been proposed for the computational reduction of gadolinium-based contrast agents (GBCAs) to mitigate adverse side effects while preserving diagnostic value. Currently, the two main challenges…

Adversarial Imitation Learning (AIL) allows the agent to reproduce expert behavior with low-dimensional states and actions. However, challenges arise in handling visual states due to their less distinguishable representation compared to…

机器学习 · 计算机科学 2024-01-23 Yunke Wang , Linwei Tao , Bo Du , Yutian Lin , Chang Xu

Iodinated contrast media is essential for dual-energy computed tomography (DECT) angiography. Previous studies show that iodinated contrast media may cause side effects, and the interruption of the supply chain in 2022 led to a severe…

图像与视频处理 · 电气工程与系统科学 2023-08-28 Qing Lyu , Josh Tan , Megan E. Lipford , Chuang Niu , Micheal E. Zapadka , Christopher M. Lack , Jonathan D. Clemente , Christopher T. Whitlow , Ge Wang

Deep learning has potential to automate screening, monitoring and grading of disease in medical images. Pretraining with contrastive learning enables models to extract robust and generalisable features from natural image datasets,…

Vision transformers in vision-language models typically use the same amount of compute for every image, regardless of whether it is simple or complex. We propose ICAR (Image Complexity-Aware Retrieval), an adaptive computation approach that…

信息检索 · 计算机科学 2026-01-16 Mikel Williams-Lekuona , Georgina Cosma

We study a new family of inverse problems for recovering representations of corrupted data. We assume access to a pre-trained representation learning network R(x) that operates on clean images, like CLIP. The problem is to recover the…

机器学习 · 计算机科学 2021-10-28 Sriram Ravula , Georgios Smyrnis , Matt Jordan , Alexandros G. Dimakis

Robustness of deep learning methods for limited angle tomography is challenged by two major factors: a) due to insufficient training data the network may not generalize well to unseen data; b) deep learning methods are sensitive to noise.…

图像与视频处理 · 电气工程与系统科学 2019-08-29 Yixing Huang , Alexander Preuhs , Guenter Lauritsch , Michael Manhart , Xiaolin Huang , Andreas Maier

As the COVID-19 pandemic puts pressure on healthcare systems worldwide, the computed tomography image based AI diagnostic system has become a sustainable solution for early diagnosis. However, the model-wise vulnerability under adversarial…

图像与视频处理 · 电气工程与系统科学 2022-12-01 Kun Xiang , Xing Zhang , Jinwen She , Jinpeng Liu , Haohan Wang , Shiqi Deng , Shancheng Jiang

Long-tailed image classification remains a long-standing challenge, as real-world data typically follow highly imbalanced distributions where a few head classes dominate and many tail classes contain only limited samples. This imbalance…

计算工程、金融与科学 · 计算机科学 2026-03-18 Ziquan Zhu , Gaojie Jin , Hanruo Zhu , Si-Yuan Lu , Yunxiao Zhang , Zeyu Fu , Ronghui Mu , Guoqiang Zhang , Zhao Sun , Xia Yuhang , Jiaxing Shang , Xiang Li , Lu Liu , Tianjin Huang

Single image inverse problem is a notoriously challenging ill-posed problem that aims to restore the original image from one of its corrupted versions. Recently, this field has been immensely influenced by the emergence of deep-learning…

计算机视觉与模式识别 · 计算机科学 2019-11-19 Qianwei Zhou , Chen Zhou , Haigen Hu , Yuhang Chen , Shengyong Chen , Xiaoxin Li

Diffusion models have recently emerged as powerful generative priors for solving inverse problems. However, training diffusion models in the pixel space are both data-intensive and computationally demanding, which restricts their…

计算机视觉与模式识别 · 计算机科学 2024-04-17 Bowen Song , Soo Min Kwon , Zecheng Zhang , Xinyu Hu , Qing Qu , Liyue Shen

Deep learning (DL) based contrast dose reduction and elimination in MRI imaging is gaining traction, given the detrimental effects of Gadolinium-based Contrast Agents (GBCAs). These DL algorithms are however limited by the availability of…

图像与视频处理 · 电气工程与系统科学 2023-07-25 Dayang Wang , Srivathsa Pasumarthi , Greg Zaharchuk , Ryan Chamberlain

Gadolinium-based contrast agents (GBCAs) are widely used in magnetic resonance imaging (MRI) to enhance lesion detection and characterisation, particularly in the field of neuro-oncology. Nevertheless, concerns regarding gadolinium…

图像与视频处理 · 电气工程与系统科学 2025-10-03 Pierre Fayolle , Alexandre Bône , Noëlie Debs , Philippe Robert , Pascal Bourdon , Remy Guillevin , David Helbert

In the recent years, we witness a great interest in imaging, in a wide sense, using contrast agents. One of the reasons is that many imaging modalities, as the ones related to medical sciences, suffer from several shortcomings. The most…

光学 · 物理学 2020-08-28 Ahcene Ghandriche , Mourad Sini

In this article we dwell into the class of so called ill posed Linear Inverse Problems (LIP) in machine learning, which has become almost a classic in recent times. The fundamental task in an LIP is to recover the entire signal / data from…

机器学习 · 计算机科学 2020-01-10 Mohammed Rayyan Sheriff , Debasish Chatterjee

Recently, data-driven techniques have demonstrated remarkable effectiveness in addressing challenges related to MR imaging inverse problems. However, these methods still exhibit certain limitations in terms of interpretability and…

计算机视觉与模式识别 · 计算机科学 2023-09-19 Huayu Wang , Chen Luo , Taofeng Xie , Qiyu Jin , Guoqing Chen , Zhuo-Xu Cui , Dong Liang

With the development of deep learning, medical image processing has been widely used to assist clinical research. This paper focuses on the denoising problem of low-dose computed tomography using deep learning. Although low-dose computed…

图像与视频处理 · 电气工程与系统科学 2026-05-19 Zhilin Guan , Wei Zhang

Consistent improvement of image priors over the years has led to the development of better inverse problem solvers. Diffusion models are the newcomers to this arena, posing the strongest known prior to date. Recently, such models operating…

计算机视觉与模式识别 · 计算机科学 2025-01-22 Ron Raphaeli , Sean Man , Michael Elad
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