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We propose advancing photonic in-memory computing through three-dimensional photonic-electronic integrated circuits using phase-change materials (PCM) and AlGaAs-CMOS technology. These circuits offer high precision (greater than 12 bits),…

Atmospheric dispersion causes light from celestial objects with different wavelengths to refract at varying angles as it passes through Earth's atmosphere. This effect results in an elongated image at the focal plane of a telescope and…

Instrumentation and Methods for Astrophysics · Physics 2025-11-06 Manjunath Bestha , Thirupathi Sivarani , Bachar Wehbe , Amirul Hasan , Bharat Chandra P , Devika K Divakar , Athira Unni , Parvathy Menon , Arun Surya , Pallavi Saraf

The Advanced X-ray Imaging Satellite (AXIS), an astrophysics NASA probe mission currently in phase A, will provide high-throughput, high-spatial resolution X-ray imaging in the 0.3 to 10 keV band. We report on the notional ground…

Traceability to the International System of Units (SI) is fundamental to measurement accuracy and reliability. In this study, we demonstrate subnanometer traceability of localization microscopy, establishing a metrological foundation for…

We design a system-level architecture for approaching the shot noise limit for passive triangulation of a quasi-monochromatic point source. Our emphasis is not in the novelty of the basic physics, but that existing systems lose fundamental…

Optics · Physics 2026-05-07 John C. Howell , Andrew N. Jordan

This paper reports the latest developmental efforts for a position-sensitive glass-based Resistive Plate Chamber (RPC) and a multi-channel Data AcQuisition (DAQ) system tailored for muon tracking in muography applications. The designed…

Instrumentation and Detectors · Physics 2024-02-26 V. Kumar , S. Basnet , E. Cortina Gil , P. Demin , R. M. I. D. Gamage , A. Giammanco , R. Karnam , M. Moussawi , A. Samalan , M. Tytgat , A. Youssef

Muons from cosmic-ray interactions in the atmosphere provide a high-statistics source of particles that can be used to study the performance and calibration of the ATLAS detector. Cosmic-ray muons can penetrate to the cavern and deposit…

Instrumentation and Detectors · Physics 2012-08-27 The ATLAS Collaboration

Precise sensing and control of spatial mode content is essential for the performance of precision optical systems, particularly interferometric gravitational-wave detectors, where misalignment and mode mismatch can lead to significant…

Instrumentation and Methods for Astrophysics · Physics 2026-03-31 Liu Tao , Eleonora Capocasa , Yuhang Zhao , Jacques Ding , Isander Ahrend , Matteo Barsuglia

Object detection performance, as measured on the canonical PASCAL VOC dataset, has plateaued in the last few years. The best-performing methods are complex ensemble systems that typically combine multiple low-level image features with…

Computer Vision and Pattern Recognition · Computer Science 2014-10-23 Ross Girshick , Jeff Donahue , Trevor Darrell , Jitendra Malik

Face alignment is a classic problem in the computer vision field. Previous works mostly focus on sparse alignment with a limited number of facial landmark points, i.e., facial landmark detection. In this paper, for the first time, we aim at…

Computer Vision and Pattern Recognition · Computer Science 2017-09-06 Yaojie Liu , Amin Jourabloo , William Ren , Xiaoming Liu

In the planned or considered upgrades of LHCb, ALICE and Belle II experiments, the Ring imaging Cherenkov (RICH) detectors will have to be improved in order to function at increased beam interaction density. The photodetectors used in…

We present the photometric calibration of the HST Advanced Camera for Surveys (ACS). We give here an overview of the performance and calibration of the 2 CCD cameras, the Wide Field Channel (WFC) and the High Resolution Channel (HRC), and a…

The creation of precise and high-resolution crop point clouds in agricultural fields has become a key challenge for high-throughput phenotyping applications. This work implements a novel calibration method to calibrate the laser scanning…

Robotics · Computer Science 2024-03-27 Felix Esser , Gereon Tombrink , Andre Cornelißen , Lasse Klingbeil , Heiner Kuhlmann

This letter presents a novel method to estimate the relative poses between RGB-D cameras with minimal overlapping fields of view in a panoramic RGB-D camera system. This calibration problem is relevant to applications such as indoor 3D…

Image and Video Processing · Electrical Eng. & Systems 2018-09-11 Hang Liu , Hengyu Li , Xiahua Liu , Jun Luo , Shaorong Xie , Yu Sun

The CMS experiment, located at the CERN Large Hadron Collider, has a redundant muon system composed by three different detector technologies: Cathode Strip Chambers (in the forward regions), Drift Tubes (in the central region) and Resistive…

We propose three novel metrics for evaluating the accuracy of a set of estimated camera poses given the ground truth: Translation Alignment Score (TAS), Rotation Alignment Score (RAS), and Pose Alignment Score (PAS). The TAS evaluates the…

Computer Vision and Pattern Recognition · Computer Science 2024-08-06 Seong Hun Lee , Javier Civera

The central component of the CMS detector is the largest silicon tracker ever built. The precise alignment of this complex device is a formidable challenge, and only achievable with a significant extension of the technologies routinely used…

Instrumentation and Detectors · Physics 2014-08-22 CMS Collaboration

Modern convolutional neural networks (CNNs)-based face detectors have achieved tremendous strides due to large annotated datasets. However, misaligned results with high detection confidence but low localization accuracy restrict the further…

Computer Vision and Pattern Recognition · Computer Science 2022-07-25 Shi Luo , Xiongfei Li , Xiaoli Zhang

For applications such as autonomous driving, self-localization/camera pose estimation and scene parsing are crucial technologies. In this paper, we propose a unified framework to tackle these two problems simultaneously. The uniqueness of…

Computer Vision and Pattern Recognition · Computer Science 2018-09-26 Peng Wang , Ruigang Yang , Binbin Cao , Wei Xu , Yuanqing Lin