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Obtaining per-beat information is a key task in the analysis of cardiac electrocardiograms (ECG), as many downstream diagnosis tasks are dependent on ECG-based measurements. Those measurements, however, are costly to produce, especially in…

机器学习 · 计算机科学 2022-06-14 Guillermo Jimenez-Perez , Juan Acosta , Alejandro Alcaine , Oscar Camara

Lossy compression brings artifacts into the compressed image and degrades the visual quality. In recent years, many compression artifacts removal methods based on convolutional neural network (CNN) have been developed with great success.…

图像与视频处理 · 电气工程与系统科学 2020-10-22 Jianwei Li , Yongtao Wang , Haihua Xie , Kai-Kuang Ma

Image denoising or artefact removal using deep learning is possible in the availability of supervised training dataset acquired in real experiments or synthesized using known noise models. Neither of the conditions can be fulfilled for…

图像与视频处理 · 电气工程与系统科学 2020-11-23 Suyog Jadhav , Sebastian Acuña , Krishna Agarwal , Dilip K. prasad

Effectively learning the temporal dynamics in electroencephalogram (EEG) signals is challenging yet essential for decoding brain activities using brain-computer interfaces (BCIs). Although Transformers are popular for their long-term…

信号处理 · 电气工程与系统科学 2024-10-30 Yi Ding , Yong Li , Hao Sun , Rui Liu , Chengxuan Tong , Chenyu Liu , Xinliang Zhou , Cuntai Guan

Towards developing effective and efficient brain-computer interface (BCI) systems, precise decoding of brain activity measured by electroencephalogram (EEG), is highly demanded. Traditional works classify EEG signals without considering the…

信号处理 · 电气工程与系统科学 2022-09-19 Yimin Hou , Shuyue Jia , Xiangmin Lun , Ziqian Hao , Yan Shi , Yang Li , Rui Zeng , Jinglei Lv

Electrocardiograms (ECGs) are vital for monitoring cardiac health, enabling the assessment of heart rate variability (HRV), detection of arrhythmias, and diagnosis of cardiovascular conditions. However, ECG signals recorded from wearable…

机器学习 · 计算机科学 2025-12-17 Sharmad Kalpande , Nilesh Kumar Sahu , Haroon Lone

Positron emission tomography (PET) scanners continue to increase sensitivity and axial coverage by adding an ever expanding array of block detectors. As they age, one or more block detectors may lose sensitivity due to a malfunction or…

医学物理 · 物理学 2019-10-17 William Whiteley , Jens Gregor

The classification of electrocardiogram (ECG) signals, which takes much time and suffers from a high rate of misjudgment, is recognized as an extremely challenging task for cardiologists. The major difficulty of the ECG signals…

机器学习 · 计算机科学 2020-12-11 Haozhen Zhang , Wei Zhao , Shuang Liu

Ultrasound imaging (US) often suffers from distinct image artifacts from various sources. Classic approaches for solving these problems are usually model-based iterative approaches that have been developed specifically for each type of…

图像与视频处理 · 电气工程与系统科学 2020-07-13 Jaeyoung Huh , Shujaat Khan , Jong Chul Ye

People undergoing neuromuscular dysfunctions and amputated limbs require automatic prosthetic appliances. In developing such prostheses, the precise detection of brain motor actions is imperative for the Grasp-and-Lift (GAL) tasks. Because…

信号处理 · 电气工程与系统科学 2022-02-15 Md. Kamrul Hasan , Sifat Redwan Wahid , Faria Rahman , Shanjida Khan Maliha , Sauda Binte Rahman

Magnetoencephalography (MEG) is an important noninvasive, nonhazardous technology for functional brain mapping, measuring the magnetic fields due to the intracellular neuronal current flow in the brain. However, the inherent level of noise…

其他计算机科学 · 计算机科学 2015-03-24 A. Ukil

This letter presents a novel hybrid method that leverages deep learning to exploit the multi-resolution analysis capability of the wavelets, in order to denoise a photoplethysmography (PPG) signal. Under the proposed method, a noisy PPG…

信息论 · 计算机科学 2023-01-18 Rabia Ahmed , Ahsan Mehmood , Muhammad Mahboob Ur Rahman , Octavia A. Dobre

In previous studies, decoding electroencephalography (EEG) signals has not considered the topological relationship of EEG electrodes. However, the latest neuroscience has suggested brain network connectivity. Thus, the exhibited interaction…

信号处理 · 电气工程与系统科学 2020-07-28 Shuyue Jia , Yimin Hou , Yan Shi , Yang Li

Electrocardiography (ECG) signal is a highly applied measurement for individual heart condition, and much effort have been endeavored towards automatic heart arrhythmia diagnosis based on machine learning. However, traditional machine…

信号处理 · 电气工程与系统科学 2021-11-01 Ziyu Liu , Xiang Zhang

Compression artifacts arise in images whenever a lossy compression algorithm is applied. These artifacts eliminate details present in the original image, or add noise and small structures; because of these effects they make images less…

计算机视觉与模式识别 · 计算机科学 2017-12-07 Leonardo Galteri , Lorenzo Seidenari , Marco Bertini , Alberto Del Bimbo

State-of-the-art electron microscopes such as scanning electron microscopes (SEM), scanning transmission electron microscopes (STEM) and transmission electron microscopes (TEM) have become increasingly sophisticated. However, the quality of…

计算物理 · 物理学 2023-03-31 I. Lobato , T. Friedrich , S. Van Aert

Utilizing a low-dose CT approach significantly reduces the radiation exposure for patients, yet it introduces challenges, such as increased noise and artifacts in the resultant images, which can hinder accurate medical diagnostics.…

图像与视频处理 · 电气工程与系统科学 2024-04-03 Helena Shawn , Thompson Chyrikov , Jacob Lanet , Lam-chi Chen , Jim Zhao , Christina Chajo

Electroencephalography (EEG) is a widely used non-invasive technique for monitoring brain activity, but low signal-to-noise ratios (SNR) due to various artifacts often compromise its utility. Conventional artifact removal methods require…

信号处理 · 电气工程与系统科学 2025-11-06 Shantanu Sarkar , Piotr Nabrzyski , Saurabh Prasad , Jose Luis Contreras-Vidal

There have been several attempts to quantify the diagnostic distortion caused by algorithms that perform low-dimensional electrocardiogram (ECG) representation. However, there is no universally accepted quantitative measure that allows the…

信号处理 · 电气工程与系统科学 2022-10-04 Péter Kovács , Carl Böck , Thomas Tschoellitsch , Mario Huemer , Jens Meier

Background: Single-particle cryo-electron microscopy (cryo-EM) has become a popular tool for structural determination of biological macromolecular complexes. High-resolution cryo-EM reconstruction often requires hundreds of thousands of…

数据分析、统计与概率 · 物理学 2017-09-05 Yanan Zhu , Qi Ouyang , Youdong Mao