Results 41 to 50 of about 2,715,607 (290)

Enhancement of polarizabilities of cylinders with cylinder-slab resonances

, 2014
If an object is very small in size compared with the wavelength of light, it does not scatter light efficiently. It is hence difficult to detect a very small object with light. We show using analytic theory as well as full wave numerical calculation that
Chan, C. T., Huang, Xueqin, Liu, H., Xiao, Meng   +3 more
core   +3 more sources

3d modelling of archaeological small finds by a low-cost range camera. Methodology and first results [PDF]

, 2017
The production of reliable documentation of small finds is a crucial process during archaeological excavations. Range cameras can be a valid alternative to traditional illustration methods: they are veritable 3D scanners able to easily collect the 3D ...
Crespi, Mattia, Di Rita, Martina, Montanari, Daria, Nascetti, Andrea, Nigro, Lorenzo, Ravanelli, Roberta, Spagnoli, Federica   +6 more
core   +3 more sources

Vehicle Detection in UAV Images via Background Suppression Pyramid Network and Multi-Scale Task Adaptive Decoupled Head

Remote Sensing, 2023
Vehicle detection based on unmanned aerial vehicle (UAV) aerial images plays a significant role in areas such as traffic monitoring and management, disaster relief, and more, garnering extensive attention from researchers in recent years.
Mian Pan, Weijie Xia, Haibin Yu, Xinzhi Hu, Wenyu Cai, Jianguang Shi   +5 more
doaj   +1 more source

Detecting Small Signs from Large Images

, 2017
In the past decade, Convolutional Neural Networks (CNNs) have been demonstrated successful for object detections. However, the size of network input is limited by the amount of memory available on GPUs. Moreover, performance degrades when detecting small
Chen, Min, Chen, Xin, Fan, Xiaochuan, Meng, Zibo, Tong, Yan   +4 more
core   +1 more source

Multi-View Object Detection Based on Deep Learning

Applied Sciences, 2018
A multi-view object detection approach based on deep learning is proposed in this paper. Classical object detection methods based on regression models are introduced, and the reasons for their weak ability to detect small objects are analyzed. To improve
Cong Tang, Yongshun Ling, Xing Yang, Wei Jin, Chao Zheng   +4 more
doaj   +1 more source

SF-YOLOv5: A Lightweight Small Object Detection Algorithm Based on Improved Feature Fusion Mode

Sensors, 2022
In the research of computer vision, a very challenging problem is the detection of small objects. The existing detection algorithms often focus on detecting full-scale objects, without making proprietary optimization for detecting small-size objects. For
Haiying Liu, Fengqian Sun, Jason Gu, Lixia Deng   +3 more
doaj   +1 more source

A nonlinear scalar model of extreme mass ratio inspirals in effective field theory I. Self force through third order

, 2010
The motion of a small compact object in a background spacetime is investigated in the context of a model nonlinear scalar field theory. This model is constructed to have a perturbative structure analogous to the General Relativistic description of ...
Ajith P, Barack L, Baumann D Nicolis A Senatore L Zaldarriaga M, Bollini C G, Burke W L, Chad R Galley, Damour T, Danzmann K, Detweiler S, Drasco S, Flanagan E E Hinderer T, Gair J R, Galley C R, Galley C R, Gralla S E, Hadamard J, Infeld L, Keldysh L V, Keldysh L V, Landau L D, Levi M, Levi M, Lousto C O Zlochower Y, Perrodin D L, Poisson E, Porto R A, Porto R A Ross A Rothstein I Z, Porto R A Rothstein I Z, Rosenthal E, Vallisneri M, Yolcu C Rothstein I Z Deserno M, Zemanian A H   +31 more
core   +1 more source

European Standard Clinical Practice Guideline and EXPeRT Recommendations for the Diagnosis and Management of Gastroenteropancreatic Neuroendocrine Neoplasms in Children and Adolescents

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Pediatric gastroenteropancreatic neuroendocrine neoplasms (GEP‐NENs) are extremely rare and clinically heterogeneous. Management has largely been extrapolated from adult practice. This European Standard Clinical Practice Guideline (ESCP), developed by the EXPeRT network in collaboration with adult NEN experts, provides (adult) evidence ...
Michaela Kuhlen, Calogero Virgone, Antje Redlich, Michael Abele, Ricardo Lopez‐Almaraz, Tal Ben‐Ami, Ewa Bien, Gianni Bisogno, Maja Mazic Cesen, Andrea Ferrari, Malgorzata A. Krawczyk, Yves Reguerre, Dominik T. Schneider, Ines B. Brecht, Charlotte Rigaud, Bilgehan Yalcin, Rainer Claus, Christian Vokuhl, Constantin Lapa, Jörg Fuchs, Segolene Hescot, Thomas Walter, Julien Hadoux, Daniel Orbach   +23 more
wiley   +1 more source

A Siamese Network with a Multiscale Window-Based Transformer via an Adaptive Fusion Strategy for High-Resolution Remote Sensing Image Change Detection

Remote Sensing, 2023
Remote sensing image change detection (RS-CD) has made impressive progress with the help of deep learning techniques. Small object change detection (SoCD) still faces many challenges.
Chao Tao, Dongsheng Kuang, Kai Wu, Xiaomei Zhao, Chunyan Zhao, Xin Du, Yunsheng Zhang   +6 more
doaj   +1 more source

Acoustic suspension system [PDF]

, 1983
An acoustic levitation system is described, with single acoustic source and a small reflector to stably levitate a small object while the object is processed as by coating or heating it.
Lee, M. C., Wang, T. G.
core   +1 more source