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Polarization plays an important role in various time-domain astrophysics to understand the magnetic fields, geometry, and environments of spatially unresolved variable sources. In this paper we present the results of laboratory and on-sky…

天体物理仪器与方法 · 物理学 2020-04-29 Manisha Shrestha , Iain A. Steele , Andrez S. Piascik , Helen Jermak , Robert J. Smith , Chris M. Copperwheat

Metasurfaces have attracted widespread attention due to an increasing demand of compact and wearable optical devices. For many applications, polarization-insensitive metasurfaces are highly desirable and appear to limit the choice of their…

Overcoming the trade-off between wide field of view (FOV) and compactness remains a central challenge for integrating near-infrared (NIR) imaging into smartphones and AR glasses. Existing refractive NIR optics cannot simultaneously achieve…

Context: Polarimetry is a very powerful tool to uncover various properties of astronomical objects that remain otherwise hidden in standard imaging or spectroscopic observations. However, the reliable measurement of the low polarization…

天体物理仪器与方法 · 物理学 2020-02-12 S. González-Gaitán , A. M. Mourão , F. Patat , J. P. Anderson , A. Cikota , K. Wiersema , A. B. Higgins , K. Silva

SF$_6$ is widely used as a gas-insulator in high-voltage power electrical system. Detecting SF$_6$ leaks using unmanned aerial vehicle (UAV)-based thermal cameras allows efficient large-scale inspections during routine maintenance. The…

光学 · 物理学 2023-12-05 Haohan Chen , Qianbin Feng , Jiepeng Wu , Yanlin Zhu , Hao Wang , Qiang Li , Lijun Wu

The ability of NICMOS to perform high accuracy polarimetry is currently hampered by an uncalibrated residual instrumental polarization at a level of 1.2-1.5%. To better quantify and characterize this residual we obtained observations of…

天体物理学 · 物理学 2008-11-07 D. Batcheldor , G. Schneider , D. C. Hines , G. D. Schmidt , D. J. Axon , A. Robinson , W. Sparks , C. Tadhunter

PatchMatch Multi-View Stereo (PatchMatch MVS) is one of the popular MVS approaches, owing to its balanced accuracy and efficiency. In this paper, we propose Polarimetric PatchMatch multi-view Stereo (PolarPMS), which is the first method…

计算机视觉与模式识别 · 计算机科学 2023-11-15 Jinyu Zhao , Jumpei Oishi , Yusuke Monno , Masatoshi Okutomi

Spectro-polarimetric imaging provides multidimensional optical information acquisition capabilities, offering significant potential for diverse applications. Current spectro-polarimetric imaging systems typically suffer from large physical…

图像与视频处理 · 电气工程与系统科学 2025-09-18 Jingyue Ma , Zhenming Yu , Zhengyang Li , Liang Lin , Liming Cheng , Jiayu Di , Tongshuo Zhang , Ning Zhan , Kun Xu

We experimentally demonstrate imaging in the longwave-infrared (LWIR) spectral band (8um to 12um) using a single polymer flat lens based upon multi-level diffractive optics. The device thickness is only 10{\mu}m, and chromatic aberrations…

A portable NMR polarimeter system has been developed to measure the polarization of a polarized Hydrogen-Deuteride (HD) target for hadron photoproduction experiments at SPring-8. The polarized HD target is produced at the Research Center…

仪器与探测器 · 物理学 2015-05-27 T. Ohta , M. Fujiwara , K. Fukuda , H. Kohri , T. Kunimatsu , C. Morisaki , S. Ono , M. Tanaka , K. Ueda , M. Uraki , M. Utsuro , S. Y. Wang , M. Yosoi

A polarimetric synthetic aperture radar (PolSAR) system, which uses multiple images acquired with different polarizations in both transmission and reception, has the potential to improve the description and interpretation of the observed…

信号处理 · 电气工程与系统科学 2025-07-08 Dehbia Hanis , Luca Pallotta , Augusto Aubry , Aichouche Belhadj-Aissa , Antonio De Maio

We describe a new polarized imaging pipeline implemented in the FHD software package. The pipeline is based on the optimal mapmaking imaging approach and performs horizon-to-horizon image reconstruction in all polarization modes. We discuss…

天体物理仪器与方法 · 物理学 2022-05-19 Ruby Byrne , Miguel F. Morales , Bryna Hazelton , Ian Sullivan , Nichole Barry

The field of meta-optics has grown to include metalenses spanning the ultraviolet to terahertz regimes. Imaging is a key application of meta-optics, with recent works demonstrating meta-optical imaging with advanced functionalities…

Polarization is well known for its ability to decompose diffuse and specular reflections. However, the existing decomposition methods only focus on direct reflection and overlook multiple reflections, especially specular inter-reflection.…

计算机视觉与模式识别 · 计算机科学 2026-03-24 Ryota Maeda , Shinsaku Hiura

Polarizing filters provide a powerful way to separate diffuse and specular reflection; however, traditional methods rely on several captures and require proper alignment of the filters. Recently, camera manufacturers have proposed to embed…

计算机视觉与模式识别 · 计算机科学 2018-11-08 Laurent Valentin Jospin , Gilles Baechler , Adam Scholefield

Millimetre-wave observations represent an important tool for Cosmology studies. The Line Intensity Mapping (LIM) technique has been proposed to map in three dimensions the specific intensity due to line (e.g. [CII], CO) emission, for…

天体物理仪器与方法 · 物理学 2023-08-29 Usasi Chowdhury , Florence Levy-Bertrand , Martino Calvo , Johannes Goupy , Alessandro Monfardini

Mid-infrared photodetectors are susceptible to background noise since every object in the surroundings emits thermal radiation from different directions. To reduce this background noise and enhance signal-to-noise ratio of mid-infrared…

光学 · 物理学 2025-04-30 Ziwei Fan , Taeseung Hwang , Yixin Chen , Zi Jing Wong

In the last decade, imaging polarimeters based on micropolarizer arrays have been developed for use in terrestrial remote sensing and metrology applications. Micropolarizer-based sensors are dramatically smaller and more mechanically robust…

太阳与恒星天体物理 · 物理学 2020-02-11 Dmitry Vorobiev , Zoran Ninkov , Lee Bernard , Neal Brock

Metasurfaces are paving the way to improve traditional optical components by integrating multiple functionalities into one optically flat metasurface design. We demonstrate the implementation of a multifunctional gap surface plasmon-based…

介观与纳米尺度物理 · 物理学 2024-12-11 Sergejs Boroviks , Rucha A. Deshpande , N. Asger Mortensen , Sergey I. Bozhevolnyi

We have developed a bolometric detector that is intrinsically sensitive to linear polarization which is optimized for making measurements of the polarization of the cosmic microwave background radiation. The receiver consists of a pair of…

天体物理学 · 物理学 2020-12-22 W. C. Jones , R. S. Bhatia , J. J. Bock , A. E. Lange