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The main objective of the present project is to explore the viability of an adaptive optics control system based exclusively on Field Programmable Gate Arrays (FPGAs), making strong use of their parallel processing capability. In an…

Instrumentation and Methods for Astrophysics · Physics 2018-07-03 Avinash Surendran , Mahesh P. Burse , A. N. Ramaprakash , Padmakar Parihar

We propose Frequency-Guided Attention (FGA), a lightweight upsampling module for single image super-resolution. Conventional upsamplers, such as Sub-Pixel Convolution, are efficient but frequently fail to reconstruct high-frequency details…

Computer Vision and Pattern Recognition · Computer Science 2025-08-26 Daejune Choi , Youchan No , Jinhyung Lee , Duksu Kim

The 2D object detection in clean images has been a well studied topic, but its vulnerability against adversarial attack is still worrying. Existing work has improved robustness of object detectors by adversarial training, at the same time,…

Computer Vision and Pattern Recognition · Computer Science 2021-08-27 Weipeng Xu , Hongcheng Huang , Shaoyou Pan

Domain adaptation methods for object detection (OD) strive to mitigate the impact of distribution shifts by promoting feature alignment across source and target domains. Multi-source domain adaptation (MSDA) allows leveraging multiple…

Computer Vision and Pattern Recognition · Computer Science 2024-12-13 Atif Belal , Akhil Meethal , Francisco Perdigon Romero , Marco Pedersoli , Eric Granger

Domain adaptive detection aims to improve the generalization of detectors on target domain. To reduce discrepancy in feature distributions between two domains, recent approaches achieve domain adaption through feature alignment in different…

Computer Vision and Pattern Recognition · Computer Science 2024-03-19 Libo Zhang , Wenzhang Zhou , Heng Fan , Tiejian Luo , Haibin Ling

End-to-end multi-object tracking (MOT) methods have recently achieved remarkable progress by unifying detection and association within a single framework. Despite their strong detection performance, these methods suffer from relatively low…

Computer Vision and Pattern Recognition · Computer Science 2025-12-03 Yuqing Shao , Yuchen Yang , Rui Yu , Weilong Li , Xu Guo , Huaicheng Yan , Wei Wang , Xiao Sun

Existing multi-focus image fusion (MFIF) methods often fail to preserve the uncertain transition region and detect small focus areas within large defocused regions accurately. To address this issue, this study proposes a new…

Computer Vision and Pattern Recognition · Computer Science 2024-02-01 Xilai Li , Xiaosong Li , Haishu Tan , Jinyang Li

We propose a novel 3D point cloud segmentation framework named SASO, which jointly performs semantic and instance segmentation tasks. For semantic segmentation task, inspired by the inherent correlation among objects in spatial context, we…

Computer Vision and Pattern Recognition · Computer Science 2020-06-29 Jingang Tan , Lili Chen , Kangru Wang , Jingquan Peng , Jiamao Li , Xiaolin Zhang

This study introduces a novel frequency-based data-driven controller for adaptive optics, using power spectral density for optimization while ensuring stability criteria. It addresses disturbance rejection, command amplitude constraints and…

Zero-shot anomaly localization is a rising field in computer vision research, with important progress in recent years. This work focuses on the problem of detecting and localizing anomalies in textures, where anomalies can be defined as the…

Computer Vision and Pattern Recognition · Computer Science 2025-10-20 Andrei-Timotei Ardelean , Patrick Rückbeil , Tim Weyrich

In the first paper of this series, we studied the effect of baryon acoustic oscillations (BAO), redshift space distortions (RSD) and weak lensing (WL) on measurements of angular cross-correlations in narrow redshift bins. Paper-II presented…

Cosmology and Nongalactic Astrophysics · Physics 2021-06-09 Martin Eriksen , Enrique Gaztanaga

Accurate and real-time surgical instrument segmentation is important in the endoscopic vision of robot-assisted surgery, and significant challenges are posed by frequent instrument-tissue contacts and continuous change of observation…

Computer Vision and Pattern Recognition · Computer Science 2020-08-12 Fangbo Qin , Shan Lin , Yangming Li , Randall A. Bly , Kris S. Moe , Blake Hannaford

The exploration of network structures through the lens of graph theory has become a cornerstone in understanding complex systems across diverse fields. Identifying densely connected subgraphs within larger networks is crucial for uncovering…

Computation · Statistics 2024-05-21 Wanru Guo

Multiple-input multiple-output (MIMO) radar offers several performance and flexibility advantages over traditional radar arrays. However, high angular and Doppler resolutions necessitate a large number of antenna elements and the…

Signal Processing · Electrical Eng. & Systems 2025-09-11 Chandrashekhar Rai , Himali Singh , Arpan Chattopadhyay

In preparation of future Multi-Object Spectrographs (MOS) whose one of the major role is to provide an extensive statistical studies of high redshifted galaxies surveyed, the demonstrator Canary has been designed to tackle technical…

Instrumentation and Methods for Astrophysics · Physics 2016-11-23 O. A. Martin , C. M. Correia , E. Gendron , G. Rousset , D. Gratadour , F. Vidal , T. J. Morris , A. G. Basden , R. M. Myers , B. Neichel , T. Fusco

As few-shot object detectors are often trained with abundant base samples and fine-tuned on few-shot novel examples,the learned models are usually biased to base classes and sensitive to the variance of novel examples. To address this…

Computer Vision and Pattern Recognition · Computer Science 2023-02-01 Jiaming Han , Yuqiang Ren , Jian Ding , Ke Yan , Gui-Song Xia

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

Feature selection is an important pre-processing step for many pattern classification tasks. Traditionally, feature selection methods are designed to obtain a feature subset that can lead to high classification accuracy. However,…

Machine Learning · Computer Science 2012-05-03 Rui Wang , Ke Tang

Multicolor super-resolution imaging remains an intractable challenge for both far-field and near-field based super-resolution techniques. Planar super-oscillatory lens (SOL), a far-field subwavelength-focusing diffractive lens device, holds…

Few-shot object detection (FSOD) aims to detect objects with limited samples for novel classes, while relying on abundant data for base classes. Existing FSOD approaches, predominantly built on the Faster R-CNN detector, entangle objectness…

Computer Vision and Pattern Recognition · Computer Science 2025-06-30 Taijin Zhao , Heqian Qiu , Yu Dai , Lanxiao Wang , Fanman Meng , Qingbo Wu , Hongliang Li