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Curved reconfigurable intelligent surfaces (RISs) represent a promising frontier for next-generation wireless communication, enabling adaptive wavefront control on nonplanar platforms such as unmanned aerial vehicles and urban…

Signal Processing · Electrical Eng. & Systems 2026-02-02 Filippo Pepe , Ivan Iudice , Giuseppe Castaldi , Marco Di Renzo , Vincenzo Galdi

Capturing ultrafast transient phenomena conventionally requires streak cameras or computational imaging based on compressed sensing, which lead to complex and costly systems. In this Letter, we demonstrate, to the best of our knowledge, the…

Optics · Physics 2026-05-01 Dilem Eşlik , Bahadır Utku Kesgin , Uğur Teğin

A Non-Binary Snow Index for Multi-Component Surfaces (NBSI-MS) is proposed to map snow/ice cover. The NBSI-MS is based on the spectral characteristics of different Land Cover Types (LCTs) such as snow, water, vegetation, bare land,…

Super-resolution, which aims to reconstruct high-resolution images from low-resolution images, has drawn considerable attention and has been intensively studied in computer vision and remote sensing communities. The super-resolution…

Image and Video Processing · Electrical Eng. & Systems 2023-03-21 Rui Li , Xiaowei Zhao

We present AstroWISP: a collection of image processing tools for source extraction, background determination, point spread function/pixel response function fitting, and aperture photometry. AstroWISP is particularly well-suited for working…

Instrumentation and Methods for Astrophysics · Physics 2025-09-03 Kaloyan Penev , Angel Romero , S. Javad Jafarzadeh , Olivier Guyon , Wilfred Gee , Preethi Krishnamoorthy

Coded aperture snapshot spectral imaging (CASSI) is a technique used to reconstruct three-dimensional hyperspectral images (HSIs) from one or several two-dimensional projection measurements. However, fewer projection measurements or more…

Image and Video Processing · Electrical Eng. & Systems 2024-10-28 Qile Zhao , Xianhong Zhao , Xu Ma , Xudong Chen , Gonzalo R. Arce

3D LiDAR sensors are essential for autonomous navigation, environmental monitoring, and precision mapping in remote sensing applications. To efficiently process the massive point clouds generated by these sensors, LiDAR data is often…

Computer Vision and Pattern Recognition · Computer Science 2025-10-24 Samuel Soutullo , Miguel Yermo , David L. Vilariño , Óscar G. Lorenzo , José C. Cabaleiro , Francisco F. Rivera

Cross-view image geolocalization provides an estimate of an agent's global position by matching a local ground image to an overhead satellite image without the need for GPS. It is challenging to reliably match a ground image to the correct…

Computer Vision and Pattern Recognition · Computer Science 2022-07-07 Lena M. Downes , Dong-Ki Kim , Ted J. Steiner , Jonathan P. How

Reconfigurable intelligent surfaces (RISs) are envisioned as a potentially transformative technology for future wireless communications. However, RISs' inability to process signals and the attendant increased channel dimension have brought…

Signal Processing · Electrical Eng. & Systems 2023-02-14 Jieao Zhu , Kunzan Liu , Zhongzhichao Wan , Linglong Dai , Tie Jun Cui , H. Vincent Poor

High-precision localization and environmental sensing are essential for a new wave of applications, ranging from industrial automation and autonomous systems to augmented reality and remote healthcare. Conventional wireless methods,…

We tackle the challenge of LiDAR-based place recognition, which traditionally depends on costly and time-consuming prior 3D maps. To overcome this, we first construct LiRSI-XA dataset, which encompasses approximately $110,000$ remote…

Computer Vision and Pattern Recognition · Computer Science 2025-10-30 Ziwei Shi , Xiaoran Zhang , Wenjing Xu , Yan Xia , Yu Zang , Siqi Shen , Cheng Wang

Hyperspectral image (HSI) with high spectral resolution often suffers from low spatial resolution owing to the limitations of imaging sensors. Image fusion is an effective and economical way to enhance the spatial resolution of HSI, which…

Image and Video Processing · Electrical Eng. & Systems 2020-08-11 Renwei Dian , Shutao Li , Bin Sun , Anjing Guo

With the development of computer-aided diagnosis (CAD) and image scanning technology, Whole-slide Image (WSI) scanners are widely used in the field of pathological diagnosis. Therefore, WSI analysis has become the key to modern digital…

Computer Vision and Pattern Recognition · Computer Science 2021-02-23 Chen Li , Xintong Li , Md Rahaman , Xiaoyan Li , Hongzan Sun , Hong Zhang , Yong Zhang , Xiaoqi Li , Jian Wu , Yudong Yao , Marcin Grzegorzek

Large constellations of Earth Observation Low Earth Orbit satellites collect enormous amounts of image data every day. This amount of data needs to be transferred to data centers for processing via ground stations. Ground Station as a…

Networking and Internet Architecture · Computer Science 2025-01-03 Heng Zhao , Sheng Cen , Yifei Zhu

In this paper, we propose a multi-RIS-aided wireless imaging framework in 3D facing the distributed placement of multi-sensor networks. The system creates a randomized reflection pattern by adjusting the RIS phase shift, enabling the…

Image and Video Processing · Electrical Eng. & Systems 2023-11-21 Fuhai Wang , Chun Wang , Rujing Xiong , Zhengyu Wang , Tiebin Mi , Robert Caiming Qiu

By reconfiguring the propagation environment of electromagnetic waves artificially, reconfigurable intelligent surfaces (RISs) have been regarded as a promising and revolutionary hardware technology to improve the energy and spectrum…

Signal Processing · Electrical Eng. & Systems 2020-06-03 Huiyuan Yang , Xiaojun Yuan , Jun Fang , Ying-Chang Liang

Unmanned aerial vehicles (UAVs) can be used as aerial wireless base stations when cellular networks go down. Prior studies on UAV-based wireless coverage typically consider an Air-to-Ground path loss model, which assumes that the users are…

Information Theory · Computer Science 2017-05-30 Hazim Shakhatreh , Abdallah Khreishah , Bo Ji

We discuss two geosynchronous gravitational wave mission concepts, which we generically name gLISA. One relies on the science instrument hosting program onboard geostationary commercial satellites, while the other takes advantage of recent…

General Relativity and Quantum Cosmology · Physics 2015-06-23 Massimo Tinto , Daniel DeBra , Sasha Buchman , Scott Tilley

Wide spectrum denoising (WSD) for superresolution microscopy imaging using compressed sensing and a high-resolution camera

Image and Video Processing · Electrical Eng. & Systems 2020-12-30 Tao Cheng , Danni Chen , Heng Li

In this paper, we propose a novel wireless architecture, mounted on a high-altitude aerial platform, which is enabled by reconfigurable intelligent surface (RIS). By installing RIS on the aerial platform, rich line-of-sight and full-area…

Signal Processing · Electrical Eng. & Systems 2022-02-03 Hong-Bae Jeon , Sung-Ho Park , Jaedon Park , Kaibin Huang , Chan-Byoung Chae