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Denoising autoencoders (DAEs) are powerful deep learning models used for feature extraction, data generation and network pre-training. DAEs consist of an encoder and decoder which may be trained simultaneously to minimise a loss (function)…

计算机视觉与模式识别 · 计算机科学 2017-10-10 Antonia Creswell , Kai Arulkumaran , Anil A. Bharath

Medical anomaly detection aims to identify abnormal findings using only normal training data, playing a crucial role in health screening and recognizing rare diseases. Reconstruction-based methods, particularly those utilizing autoencoders…

机器学习 · 计算机科学 2024-07-10 Yu Cai , Hao Chen , Kwang-Ting Cheng

Ultrafast electron beam X-ray computed tomography produces noisy data due to short measurement times, causing reconstruction artifacts and limiting overall image quality. To counteract these issues, two self-supervised deep learning methods…

机器学习 · 计算机科学 2025-11-24 Israt Jahan Tulin , Sebastian Starke , Dominic Windisch , André Bieberle , Peter Steinbach

With recent text-to-image models, anyone can generate deceptively realistic images with arbitrary contents, fueling the growing threat of visual disinformation. A key enabler for generating high-resolution images with low computational cost…

计算机视觉与模式识别 · 计算机科学 2024-03-28 Jonas Ricker , Denis Lukovnikov , Asja Fischer

Emotions play a crucial role in human interaction, health care and security investigations and monitoring. Automatic emotion recognition (AER) using electroencephalogram (EEG) signals is an effective method for decoding the real emotions,…

机器学习 · 计算机科学 2019-05-01 Emad-ul-Haq Qazi , Muhammad Hussain , Hatim AboAlsamh , Ihsan Ullah

Optimal computations under uncertainty require an adequate probabilistic representation about beliefs. Deep generative models, and specifically Variational Autoencoders (VAEs), have the potential to meet this demand by building latent…

Visual inspection of underwater structures by vehicles, e.g. remotely operated vehicles (ROVs), plays an important role in scientific, military, and commercial sectors. However, the automatic extraction of information using software tools…

计算机视觉与模式识别 · 计算机科学 2020-02-18 Yousif Hashisho , Mohamad Albadawi , Tom Krause , Uwe Freiherr von Lukas

This paper presents a novel convolutional neural network (CNN) based image compression framework via scalable auto-encoder (SAE). Specifically, our SAE based deep image codec consists of hierarchical coding layers, each of which is an…

多媒体 · 计算机科学 2019-04-02 Chuanmin Jia , Zhaoyi Liu , Yao Wang , Siwei Ma , Wen Gao

21cm tomography opens a window to directly study astrophysics and fundamental physics of early epochs in our Universe's history, the Epoch of Reionisation (EoR) and Cosmic Dawn (CD). Summary statistics such as the power spectrum omit…

宇宙学与河外天体物理 · 物理学 2022-02-09 S. Neutsch , C. Heneka , M. Brüggen

Radio frequency data in astronomy enable scientists to analyze astrophysical phenomena. However, these data can be corrupted by radio frequency interference (RFI) that limits the observation of underlying natural processes. In this study,…

天体物理仪器与方法 · 物理学 2025-09-08 Allen Chang , Mary Knapp , James LaBelle , John Swoboda , Ryan Volz , Philip J. Erickson

In this paper, an unsupervised deep learning framework based on dual-path model-driven variational auto-encoders (VAE) is proposed for angle-of-arrivals (AoAs) and channel estimation in massive MIMO systems. Specifically designed for…

信号处理 · 电气工程与系统科学 2023-05-31 Zhiheng Guo , Yuanzhang Xiao , Xiang Chen

Tomography of redshifted 21 cm transition from neutral Hydrogen using Fourier synthesis telescopes is a promising tool to study the Epoch of Reionization (EoR). Limiting the confusion from Galactic and Extragalactic foregrounds is critical…

天体物理仪器与方法 · 物理学 2015-05-28 Harish Vedantham , N. Udaya Shankar , Ravi Subrahmanyan

The electrocardiogram (ECG) is an inexpensive and widely available tool for cardiac assessment. Despite its standardized format and small file size, the high complexity and inter-individual variability of ECG signals (typically a…

机器学习 · 计算机科学 2025-08-04 Christopher Harvey , Sumaiya Shomaji , Zijun Yao , Amit Noheria

Blind image quality assessment (BIQA) is a challenging problem with important real-world applications. Recent efforts attempting to exploit powerful representations by deep neural networks (DNN) are hindered by the lack of subjectively…

计算机视觉与模式识别 · 计算机科学 2023-05-25 Zehong Zhou , Fei Zhou , Guoping Qiu

Radio Frequency Fingerprinting (RFF) is one of the promising passive authentication approaches for improving the security of the Internet of Things (IoT). However, with the proliferation of low-power IoT devices, it becomes imperative to…

信号处理 · 电气工程与系统科学 2019-07-23 Jiabao Yu , Aiqun Hu , Fen Zhou , Yuexiu Xing , Yi Yu , Guyue Li , Linning Peng

Accelerating deep neural networks (DNNs) has been attracting increasing attention as it can benefit a wide range of applications, e.g., enabling mobile systems with limited computing resources to own powerful visual recognition ability. A…

计算机视觉与模式识别 · 计算机科学 2017-12-21 Tianshui Chen , Liang Lin , Wangmeng Zuo , Xiaonan Luo , Lei Zhang

Even though auto-encoders (AEs) have the desirable property of learning compact representations without labels and have been widely applied to out-of-distribution (OoD) detection, they are generally still poorly understood and are used…

计算机视觉与模式识别 · 计算机科学 2023-02-09 Cosmin I. Bercea , Daniel Rueckert , Julia A. Schnabel

Electrocardiogram (ECG) signals play a pivotal role in cardiovascular diagnostics, providing essential information on the electrical activity of the heart. However, the inherent noise and limited resolution in ECG recordings can hinder…

信号处理 · 电气工程与系统科学 2024-04-25 Ugo Lomoio , Pierangelo Veltri , Pietro Hiram Guzzi , Pietro Lio'

Pathological brain lesions exhibit diverse appearance in brain images, in terms of intensity, texture, shape, size, and location. Comprehensive sets of data and annotations are difficult to acquire. Therefore, unsupervised anomaly detection…

The cosmic microwave background power spectra are a primary window into the early universe. However, achieving interpretable, likelihood-compatible compression and fast inference under weak model assumptions remains challenging. We propose…

宇宙学与河外天体物理 · 物理学 2025-11-03 Tian-Yang Sun , Tian-Nuo Li , He Wang , Jing-Fei Zhang , Xin Zhang