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We consider the problem of detecting objects, as they come into view, from videos in an online fashion. We provide the first real-time solution that is guaranteed to minimize the delay, i.e., the time between when the object comes in view…

Computer Vision and Pattern Recognition · Computer Science 2019-08-30 Dong Lao , Ganesh Sundaramoorthi

A new method for the line-of-sight velocity estimation of a high-speed near-Earth object (asteroid, meteorite) is suggested. The method is based on use of fractional, one-half order derivative of a Doppler signal. The algorithm suggested is…

Earth and Planetary Astrophysics · Physics 2015-06-17 V. D. Zakharchenko , I. G. Kovalenko

Ephemeral Fast Radio Bursts (FRBs) must be powered by some of the most energetic processes in the Universe. That makes them highly interesting in their own right and as precise probes for estimating cosmological parameters. This field thus…

High Energy Astrophysical Phenomena · Physics 2024-06-03 Kaustubh Rajwade , Joeri van Leeuwen

Over the past decade there has been a large increase in the number of automated camera networks that monitor the sky for fireballs. One of the goals of these networks is to provide the necessary information for linking meteorites to their…

Earth and Planetary Astrophysics · Physics 2018-04-20 Mikael Granvik , Peter Brown

With its large field of view, GWAC can record hundreds of meteors every day. These meteors are valuable treasures for some meteor research groups. It is therefore very important to accurately find all of these meteors. To address the…

Instrumentation and Methods for Astrophysics · Physics 2020-03-03 Yang Xu , Jing Wang , Maohai Huang , Jianyan Wei

Meteor and bolide phenomena caused by the atmospheric ablation of incoming meteoroids are predicted to occur at the planet Venus. Their systematic observation would allow to measure and compare the sub-mm to m meteoroid flux at different…

Earth and Planetary Astrophysics · Physics 2024-05-31 Apostolos A. Christou , Maria Gritsevich

Joint evaluation of different meteor observation types support the better understanding of both the meteor phenomenon and the terrestrial atmosphere. Two types of examples are presented in this work, linking ionospheric effects to specific…

Instrumentation and Methods for Astrophysics · Physics 2021-08-04 Á. Kereszturi , V. Barta , I. Bondár , Cs. Czanik , A. Igaz , P. Mónus , D. Rezes , L. Szabados , B. D. Pál

The disruption of asteroids and comets produces cm-sized meteoroids that end up impacting the Earth's atmosphere and producing bright fireballs that might have associated shock waves or, in geometrically-favorable occasions excavate craters…

Earth and Planetary Astrophysics · Physics 2024-05-29 Eloy Peña-Asensio , Josep Maria Trigo-Rodríguez , Maria Gritsevich , Albert Rimola

Multi-modal 3D object detection has received growing attention as the information from different sensors like LiDAR and cameras are complementary. Most fusion methods for 3D detection rely on an accurate alignment and calibration between 3D…

Computer Vision and Pattern Recognition · Computer Science 2023-05-16 Zhe Liu , Xiaoqing Ye , Zhikang Zou , Xinwei He , Xiao Tan , Errui Ding , Jingdong Wang , Xiang Bai

Fast variability of optical objects is an interesting though poorly explored subject in modern astronomy. Real-time data processing and identification of transient celestial events in the images is very important for such study as it allows…

The French FRIPON (Fireball Recovery and Interplanetary Observation Network) programme relies on a video cameras network associated to radio sensors running in a radar multistatic configuration to observe fireballs and to determine…

Ultra Fast Astronomy is a new frontier becoming enabled by improved detector technology allowing discovery of optical transients on millisecond to nanosecond time scales. These may reveal counterparts of energetic processes such as fast…

Instrumentation and Methods for Astrophysics · Physics 2021-11-08 Mikhail Denissenya , Eric V. Linder

Visual observations of meteor showers have been carried out for many decades by astronomers. Modern developments in imaging systems have advanced our knowledge about the shower dynamics and their origin. We have made an attempt to make a…

Instrumentation and Methods for Astrophysics · Physics 2015-04-28 Chintamani Pai , Ankush Bhaskar , Virendra Yadav , R. D. Tewari , A. M. Narsale

A reexamination of period finding algorithms is prompted by new large area astronomical sky surveys that can identify billions of individual sources having a thousand or more observations per source. This large increase in data necessitates…

Instrumentation and Methods for Astrophysics · Physics 2025-02-05 Douglas P. Finkbeiner , Thomas A. Prince , Samuel E. Whitebook

Deploying autonomous robots in crowded indoor environments usually requires them to have accurate dynamic obstacle perception. Although plenty of previous works in the autonomous driving field have investigated the 3D object detection…

Robotics · Computer Science 2024-02-28 Zhefan Xu , Xiaoyang Zhan , Yumeng Xiu , Christopher Suzuki , Kenji Shimada

Various meteor and fireball networks exist worldwide. Most data sets which include ground-based observational data of meteors are affected by biases. The larger and faster the entering meteoroid, the brighter is the produced meteor. Hence,…

Earth and Planetary Astrophysics · Physics 2020-11-17 Esther Drolshagen , Theresa Ott , Detlef Koschny , Gerhard Drolshagen , Anna Kristiane Schmidt , Björn Poppe

Aerators are essential and crucial auxiliary devices in intensive culture, especially in industrial culture in China. The traditional methods cannot accurately detect abnormal condition of aerators in time. Surveillance cameras are widely…

Computer Vision and Pattern Recognition · Computer Science 2018-10-18 Yeqi Liu , Yingyi Chen , Huihui Yu , Xiaomin Fang , Chuanyang Gong

Autonomous aerial harvesting is a highly complex problem because it requires numerous interdisciplinary algorithms to be executed on mini low-powered computing devices. Object detection is one such algorithm that is compute-hungry. In this…

Computer Vision and Pattern Recognition · Computer Science 2024-03-04 Ashish Kumar , Laxmidhar Behera

As astronomical photometric surveys continue to tile the sky repeatedly, the potential to pushdetection thresholds to fainter limits increases; however, traditional digital-tracking methods cannotachieve this efficiently beyond time scales…

Earth and Planetary Astrophysics · Physics 2021-04-09 Nathan Golovich , Noah Lifset , Robert Armstrong , Eric Green , Michael D. Schneider , Roger Pearce