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Extracting point correspondences from two or more views of a scene is a fundamental computer vision problem with particular importance for relative camera pose estimation and structure-from-motion. Existing local feature matching…

Computer Vision and Pattern Recognition · Computer Science 2024-01-22 Dominik A. Kloepfer , João F. Henriques , Dylan Campbell

Accurately estimating camera motion from image sequences poses a significant challenge in computer vision and robotics. Many computer vision methods first compute the essential matrix associated with a motion and then extract orientation…

Systems and Control · Electrical Eng. & Systems 2024-03-12 Tarek Bouazza , Robert Mahony , Tarek Hamel

This paper describes recent developments in object specific pose and shape prediction from single images. The main contribution is a new approach to camera pose prediction by self-supervised learning of keypoints corresponding to locations…

Computer Vision and Pattern Recognition · Computer Science 2023-02-21 Zahra Gharaee , Felix Järemo Lawin , Per-Erik Forssén

Instrumental aberrations strongly limit high-contrast imaging of exoplanets, especially when they produce quasistatic speckles in the science images. With the help of recent advances in deep learning, we have developed in previous works an…

Instrumentation and Methods for Astrophysics · Physics 2022-11-14 Maxime Quesnel , Gilles Orban de Xivry , Olivier Absil , Gilles Louppe

Self-calibrating and dual-slope measurements have been used in the field of diffuse optics for robust assessment of absolute values or temporal changes in the optical properties of highly scattering media and biological tissue. These…

Optics · Physics 2025-05-05 Giles Blaney , Angelo Sassaroli , Tapan Das , Sergio Fantini

We propose a novel approach for fast and accurate stereo visual Simultaneous Localization and Mapping (SLAM) independent of feature detection and matching. We extend monocular Direct Sparse Odometry (DSO) to a stereo system by optimizing…

Robotics · Computer Science 2021-12-06 Jiawei Mo , Md Jahidul Islam , Junaed Sattar

We propose an experimental scheme for performing sensitive, high-precision laser spectroscopy studies on fast exotic isotopes. By inducing a step-wise resonant ionization of the atoms travelling inside an electric field and subsequently…

Nuclear Experiment · Physics 2024-03-04 Silviu-Marian Udrescu , Diego Alejandro Torres , Ronald Fernando Garcia Ruiz

There is a growing interest in developing computer vision methods that can learn from limited supervision. In this paper, we consider the problem of learning to predict camera viewpoints, where obtaining ground-truth annotations are…

Computer Vision and Pattern Recognition · Computer Science 2021-04-05 Octave Mariotti , Hakan Bilen

Simulation studies are presented regarding the performance of algorithms that localize point-like radioactive sources detected by a position sensitive portable radiation instrument (COCAE). The source direction is estimated by using the…

Instrumentation and Detectors · Physics 2015-05-28 K. Karafasoulis , K. Zachariadou , S. Seferlis , I. Kaissas , C. Lambropoulos , D. Loukas , C. Potiriadis

High-precision vehicle localization with commercial setups is a crucial technique for high-level autonomous driving tasks. Localization with a monocular camera in LiDAR map is a newly emerged approach that achieves promising balance between…

Robotics · Computer Science 2023-05-09 Jinyu Miao , Kun Jiang , Yunlong Wang , Tuopu Wen , Zhongyang Xiao , Zheng Fu , Mengmeng Yang , Maolin Liu , Diange Yang

There is strong interest in designing and realizing optically-active semiconductor nanostructures of greater complexity for applications in fields ranging from biomedical engineering to quantum computing. While these increasingly complex…

Mesoscale and Nanoscale Physics · Physics 2026-05-25 Jill M. Cleveland , Tory A. Welsch , Eric Y. Chen , D. Bruce Chase , Matthew F. Doty , Hanz Y. Ramírez-Gómez

We present the original computer code for the simulation of multi-element detection system of the compact positron-emission tomograph based on a scintillator-photodiode type of detection elements. The use of such type of detection elements…

Medical Physics · Physics 2017-05-08 Alex Fomin

The strong dependence of the momentum distribution of the photoelectrons on experimental conditions raises the question as to whether angle-resolved photoemission spectroscopy (ARPES) is able to provide an accurate reflection of the Fermi…

With the growing adoption of autonomous driving, the advancement of sensor technology is crucial for ensuring safety and reliable operation. Sensor fusion techniques that combine multiple sensors such as LiDAR, radar, and cameras have…

Image and Video Processing · Electrical Eng. & Systems 2025-05-26 Masataka Kobayashi , Shintaro Shiba , Quan Kong , Norimasa Kobori , Tsukasa Shimizu , Shan Lu , Takaya Yamazato

This paper explores the use of an entropy-based technique for point cloud reconstruction with the goal of calibrating a lidar to a sensor capable of providing egomotion information. We extend recent work in this area to the problem of…

Robotics · Computer Science 2018-07-17 Jacob Lambert , Lee Clement , Matthew Giamou , Jonathan Kelly

We present a low-cost, high-resolution solution for automated laser-beam profiling with axial translation. The device is based on a Raspberry Pi, Pi Noir CMOS camera, stepper motor and commercial translation stage. We also provide software…

Instrumentation and Detectors · Physics 2018-04-09 James Keaveney

Fast and efficient semantic segmentation of large-scale LiDAR point clouds is a fundamental problem in autonomous driving. To achieve this goal, the existing point-based methods mainly choose to adopt Random Sampling strategy to process…

Computer Vision and Pattern Recognition · Computer Science 2024-03-07 XianFeng Han , Huixian Cheng , Hang Jiang , Dehong He , Guoqiang Xiao

Procedures and results on hardware level detector calibration in Super-Kamiokande (SK) are presented in this paper. In particular, we report improvements made in our calibration methods for the experimental phase IV in which new readout…

Instrumentation and Detectors · Physics 2013-12-23 K. Abe , Y. Hayato , T. Iida , K. Iyogi , J. Kameda , Y. Kishimoto , Y. Koshio , Ll. Marti , M. Miura , S. Moriyama , M. Nakahata , Y. Nakano , S. Nakayama , Y. Obayashi , H. Sekiya , M. Shiozawa , Y. Suzuki , A. Takeda , Y. Takenaga , H. Tanaka , T. Tomura , K. Ueno , R. A. Wendell , T. Yokozawa , T. J. Irvine , H. Kaji , T. Kajita , K. Kaneyuki , K. P. Lee , Y. Nishimura , K. Okumura , T. McLachlan , L. Labarga , E. Kearns , J. L. Raaf , J. L. Stone , L. R. Sulak , S. Berkman , H. A. Tanaka , S. Tobayama , M. Goldhaber , K. Bays , G. Carminati , W. R. Kropp , S. Mine , A. Renshaw , M. B. Smy , H. W. Sobel , K. S. Ganezer , J. Hill , W. E. Keig , J. S. Jang , J. Y. Kim , I. T. Lim , N. Hong , T. Akiri , J. B. Albert , A. Himmel , K. Scholberg , C. W. Walter , T. Wongjirad , T. Ishizuka , S. Tasaka , J. G. Learned , S. Matsuno , S. N. Smith , T. Hasegawa , T. Ishida , T. Ishii , T. Kobayashi , T. Nakadaira , K. Nakamura , K. Nishikawa , Y. Oyama , K. Sakashita , T. Sekiguchi , T. Tsukamoto , A. T. Suzuki , Y. Takeuchi , K. Huang , K. Ieki , M. Ikeda , T. Kikawa , H. Kubo , A. Minamino , A. Murakami , T. Nakaya , M. Otani , K. Suzuki , S. Takahashi , Y. Fukuda , K. Choi , Y. Itow , G. Mitsuka , M. Miyake , P. Mijakowski , R. Tacik , J. Hignight , J. Imber , C. K. Jung , I. Taylor , C. Yanagisawa , Y. Idehara , H. Ishino , A. Kibayashi , T. Mori , M. Sakuda , R. Yamaguchi , T. Yano , Y. Kuno , S. B. Kim , B. S. Yang , H. Okazawa , Y. Choi , K. Nishijima , M. Koshiba , Y. Totsuka , M. Yokoyama , K. Martens , M. R. Vagins , J. F. Martin , P. de Perio , A. Konaka , M. J. Wilking , S. Chen , Y. Heng , H. Sui , Z. Yang , H. Zhang , Y. Zhenwei , K. Connolly , M. Dziomba , R. J. Wilkes

A new method for improving the resolution of astronomical images is presented. It is based on the principle that sampled data cannot be fully deconvolved without violating the sampling theorem. Thus, the sampled image should not be…

Astrophysics · Physics 2009-10-30 P. Magain , F. Courbin , S. Sohy

We propose a keypoint-based object-level SLAM framework that can provide globally consistent 6DoF pose estimates for symmetric and asymmetric objects alike. To the best of our knowledge, our system is among the first to utilize the camera…