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We report on the limitations of sky subtraction accuracy for long duration fibre-optic multi-object spectroscopy of faint astronomical sources during long duration exposures. We show that while standard sky subtraction techniques yield…

Instrumentation and Methods for Astrophysics · Physics 2015-05-19 Robert Sharp , Hannah Parkinson

Visual error metrics play a fundamental role in the quantification of perceived image similarity. Most recently, use cases for them in real-time applications have emerged, such as content-adaptive shading and shading reuse to increase…

Graphics · Computer Science 2023-10-16 João Libório Cardoso , Bernhard Kerbl , Lei Yang , Yury Uralsky , Michael Wimmer

Blind motion deblurring is one of the most basic and challenging problems in image processing and computer vision. It aims to recover a sharp image from its blurred version knowing nothing about the blur process. Many existing methods use…

Computer Vision and Pattern Recognition · Computer Science 2019-01-09 Quan Yuan , Junxia Li , Lingwei Zhang , Zhefu Wu , Guangyu Liu

GAIA is the ``super-Hipparcos'' survey satellite selected as a Cornerstone 6 mission by the European Space Agency. GAIA can measure microlensing by the small excursions of the light centroid that occur during events. The all-sky…

Astrophysics · Physics 2009-11-07 V. A. Belokurov , N. W. Evans

Anomaly detection (AD) plays a pivotal role in AI applications, e.g., in classification, and intrusion/threat detection in cybersecurity. However, most existing methods face challenges of heterogeneity amongst feature subsets posed by…

Artificial Intelligence · Computer Science 2025-01-15 Phai Vu Dinh , Diep N. Nguyen , Dinh Thai Hoang , Quang Uy Nguyen , Eryk Dutkiewicz

Unconstrained gaze estimation is the process of determining where a subject is directing their visual attention in uncontrolled environments. Gaze estimation systems are important for a myriad of tasks such as driver distraction monitoring,…

Computer Vision and Pattern Recognition · Computer Science 2026-03-06 Franko Šikić , Donik Vršnak , Sven Lončarić

Multi-view 3D object detection is a crucial component of autonomous driving systems. Contemporary query-based methods primarily depend either on dataset-specific initialization of 3D anchors, introducing bias, or utilize dense attention…

Robotics · Computer Science 2024-11-12 Michelle Adeline , Junn Yong Loo , Vishnu Monn Baskaran

Since the year 2000, adaptive optics (AO) has seen the emergence of a variety of new concepts addressing particular science needs; multiconjugate adaptive optics (MCAO) is one of them. By correcting the atmospheric turbulence in 3D using…

Instrumentation and Methods for Astrophysics · Physics 2020-03-09 Francois Rigaut , Benoit Neichel

Image compression is a widely used technique to reduce the spatial redundancy in images. Recently, learning based image compression has achieved significant progress by using the powerful representation ability from neural networks.…

Image and Video Processing · Electrical Eng. & Systems 2020-05-26 Jiaheng Liu , Guo Lu , Zhihao Hu , Dong Xu

Anomaly segmentation plays a pivotal role in identifying atypical objects in images, crucial for hazard detection in autonomous driving systems. While existing methods demonstrate noteworthy results on synthetic data, they often fail to…

Computer Vision and Pattern Recognition · Computer Science 2023-10-17 Ji Zhang , Xiao Wu , Zhi-Qi Cheng , Qi He , Wei Li

In this paper a robust algorithm for DOA estimation of coherent sources in presence of antenna array imperfections is presented. We exploit the current advances of deep learning to overcome two of the most common problems facing the state…

Signal Processing · Electrical Eng. & Systems 2020-05-07 Aya Mostafa Ahmed , Omar Eissa , Aydin Sezgin

We generalize ERA method of PSF correction for more realistic situations. The method re-smears the observed galaxy image(galaxy image smeared by PSF) and PSF image by an appropriate function called Re-Smearing Function(RSF) to make new…

Cosmology and Nongalactic Astrophysics · Physics 2016-08-08 Yuki Okura , Toshifumi Futamase

Multi-Modal Entity Alignment (MMEA) aims to retrieve equivalent entities from different Multi-Modal Knowledge Graphs (MMKGs), a critical information retrieval task. Existing studies have explored various fusion paradigms and consistency…

Multimedia · Computer Science 2025-05-16 Taoyu Su , Jiawei Sheng , Duohe Ma , Xiaodong Li , Juwei Yue , Mengxiao Song , Yingkai Tang , Tingwen Liu

Machine learning (ML) models trained to detect physical-layer threats on one optical fiber system often fail catastrophically when applied to a different system, due to variations in operating wavelength, fiber properties, and network…

In reading tasks drift can move fixations from one word to another or even another line, invalidating the eye tracking recording. Manual correction is time-consuming and subjective, while automated correction is fast yet limited in…

Human-Computer Interaction · Computer Science 2025-01-14 Naser Al Madi , Brett Torra , Yixin Li , Najam Tariq

Background and Aim: Accurate classification of Magnetic Resonance Images (MRI) is essential to accurately predict Mild Cognitive Impairment (MCI) to Alzheimer's Disease (AD) conversion. Meanwhile, deep learning has been successfully…

Computer Vision and Pattern Recognition · Computer Science 2021-09-03 Kshitiz Shrestha , Omar Hisham Alsadoon , Abeer Alsadoon , Tarik A. Rashid , Rasha S. Ali , P. W. C. Prasad , Oday D. Jerew

Convolutional Neural Network models have successfully detected retinal illness from optical coherence tomography (OCT) and fundus images. These CNN models frequently rely on vast amounts of labeled data for training, difficult to obtain,…

Computer Vision and Pattern Recognition · Computer Science 2022-01-28 Sourya Dipta Das , Saikat Dutta , Nisarg A. Shah , Dwarikanath Mahapatra , Zongyuan Ge

We apply a Machine Learning technique known as Convolutional Denoising Autoencoder to denoise synthetic images of state-of-the-art radio telescopes, with the goal of detecting the faint, diffused radio sources predicted to characterise the…

Instrumentation and Methods for Astrophysics · Physics 2021-11-03 Claudio Gheller , Franco Vazza

A maximally stable extreme region (MSER) analysis based convolutional neural network (CNN) for unified defect detection framework is proposed in this paper. Our proposed framework utilizes the generality and stability of MSER to generate…

Signal Processing · Electrical Eng. & Systems 2020-05-26 Zelin Deng , Xiaolong Yan , Shengjun Zhang , Colleen P. Bailey

To improve photometric precision by removing blending effect, a newly developed technique of difference image analysis (DIA) is adopted by several gravitational microlensing experiment groups. However, the principal problem of the DIA…

Astrophysics · Physics 2009-10-31 Cheongho Han