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Modern imaging systems can be enhanced in efficiency, compactness, and application through introduction of multilayer nanopatterned structures for manipulation of light based on its fundamental properties. High transmission efficiency…

Sensor fusion has become a popular topic in robotics. However, conventional fusion methods encounter many difficulties, such as data representation differences, sensor variations, and extrinsic calibration. For example, the calibration…

计算机视觉与模式识别 · 计算机科学 2023-08-29 Shuyi Zhou , Shuxiang Xie , Ryoichi Ishikawa , Ken Sakurada , Masaki Onishi , Takeshi Oishi

Optical sensor applications have become popular through digital transformation. Linking observed data to real-world locations and combining different image sensors is essential to make the applications practical and efficient. However, data…

计算机视觉与模式识别 · 计算机科学 2025-03-20 Kana Kurata , Hitoshi Niigaki , Xiaojun Wu , Ryuichi Tanida

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

We present an approach for improving spatial frequency sampling in active incoherent millimeter-wave (AIM) imaging systems using frequency diversity. AIM imaging relies on active transmission of spatio-temporally incoherent signals to…

信号处理 · 电气工程与系统科学 2025-03-12 Jorge R. Colon-Berrios , Jeffrey A. Nanzer

Nowadays, many applications rely on images of high quality to ensure good performance in conducting their tasks. However, noise goes against this objective as it is an unavoidable issue in most applications. Therefore, it is essential to…

计算机视觉与模式识别 · 计算机科学 2017-04-20 Ahmed Ben Said , Rachid Hadjidj , Kamel Eddine Melkemi , Sebti Foufou

The simultaneous capture of imaging data at multiple wavelengths across the electromagnetic spectrum is highly challenging, requiring complex and costly multispectral image sensors. In this study, we introduce a comprehensive framework for…

计算机视觉与模式识别 · 计算机科学 2015-12-18 Jason Deglint , Farnoud Kazemzadeh , Daniel Cho , David A. Clausi , Alexander Wong

Hyperspectral imaging (HSI) is widely applied in various industries, enabling detailed analysis of material properties or composition through their spectral signatures. However, for classification of construction and demolition waste (CDW)…

光学 · 物理学 2025-07-15 Stanislav Vítek , Tomáš Zbíral , Václav Nežerka

Optical interferometers provide multiple wavelength measurements. In order to fully exploit the spectral and spatial resolution of these instruments, new algorithms for image reconstruction have to be developed. Early attempts to deal with…

天体物理仪器与方法 · 物理学 2015-06-11 Éric Thiébaut , Ferréol Soulez , Loïc Denis

Many consumer technologies and scientific methods rely on photodetection of infrared light. We report a Schottky photodetector operating below silicon's band gap energy, through hot carrier injection from a nanoscale metallic absorber. Our…

介观与纳米尺度物理 · 物理学 2022-04-27 Christian Frydendahl , Meir Grajower , Jonathan Bar-David , Noa Mazurski , Joseph Shappir , Uriel Levy

Safety and reliability are crucial for the public acceptance of autonomous driving. To ensure accurate and reliable environmental perception, intelligent vehicles must exhibit accuracy and robustness in various environments. Millimeter-wave…

计算机视觉与模式识别 · 计算机科学 2025-02-24 Yue Sun , Yeqiang Qian , Chunxiang Wang , Ming Yang

In this work we propose long wave infrared (LWIR) imagery as a viable supporting modality for semantic segmentation using learning-based techniques. We first address the problem of RGB-thermal camera calibration by proposing a passive…

计算机视觉与模式识别 · 计算机科学 2019-09-25 Shreyas S. Shivakumar , Neil Rodrigues , Alex Zhou , Ian D. Miller , Vijay Kumar , Camillo J. Taylor

Object detection in natural scenes can be a challenging task. In many real-life situations, the visible spectrum is not suitable for traditional computer vision tasks. Moving outside the visible spectrum range, such as the thermal spectrum…

计算机视觉与模式识别 · 计算机科学 2021-02-08 Md Osman Gani , Somenath Kuiry , Alaka Das , Mita Nasipuri , Nibaran Das

Research on microwave signal measurement techniques is risen, driven by the expanding urgent demands of wireless communication, global positioning systems, remote sensing and 6G networks. In stark contrast with traditional electronic-based…

Human behavioral monitoring during sleep is essential for various medical applications. Majority of the contactless human pose estimation algorithms are based on RGB modality, causing ineffectiveness in in-bed pose estimation due to…

计算机视觉与模式识别 · 计算机科学 2021-10-08 Mohamed Afham , Udith Haputhanthri , Jathurshan Pradeepkumar , Mithunjha Anandakumar , Ashwin De Silva , Chamira Edussooriya

The method of a linear high dynamic range imaging using solid-state photosensors with Bayer colour filters array is provided in this paper. Using information from neighbour pixels, it is possible to reconstruct linear images with wide…

计算机视觉与模式识别 · 计算机科学 2008-03-24 Mikhail V. Konnik

In remote sensing, each sensor can provide complementary or reinforcing information. It is valuable to fuse outputs from multiple sensors to boost overall performance. Previous supervised fusion methods often require accurate labels for…

计算机视觉与模式识别 · 计算机科学 2019-11-22 Xiaoxiao Du , Alina Zare

The mid-infrared (mid-IR) spectral range is a part of the electromagnetic spectrum in which most of the molecules have vibrational and rotational resonances. Ge-based photonic integrated circuits in this wavelength range have thus seen a…

The combination of LiDAR and camera modalities is proven to be necessary and typical for 3D object detection according to recent studies. Existing fusion strategies tend to overly rely on the LiDAR modal in essence, which exploits the…

计算机视觉与模式识别 · 计算机科学 2023-04-20 Yang Yang , Weijie Ma , Hao Chen , Linlin Ou , Xinyi Yu

Infrared optical measurement has a wide range of applications in industry and science, but infrared light detectors suffer from high costs and inferior performance than visible light detectors. Four-wave mixing (FWM) process allows…