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A Phase Discrepancy Analysis of Object Motion [chapter]

Bolei Zhou, Xiaodi Hou, Liqing Zhang
2011 Lecture Notes in Computer Science  
Based on theoretic analysis, we show that 1) the displacement of the foreground and the background can be represented by the phase change of Fourier spectra, and 2) the motion of background objects can  ...  be extracted by Phase Discrepancy in an efficient and robust way.  ...  Fig. 1 . 1 An illustration of moving object detection from a perspective of optical flow analysis. A): A video sequence with both object motions and camera motion. B): The corresponding optical flow.  ... 
doi:10.1007/978-3-642-19318-7_18 fatcat:5domayz2mzhz3ensmdwvtrosku

OC-0163: 4DCT motion analysis of distinct liver regions during respiration with and without abdominal compression

A. Leong, S. Lang, S. Graydon, O. Riesterer, S. Klöck, C. Winter
2013 Radiotherapy and Oncology  
Purpose/Objective: A remaining uncertainty in breast cancer irradiation is the effect of respiratory induced motion on target area and organs at risk.  ...  Purpose/Objective: Organ motion during respiration increases the component of normal tissue included within the ITV.  ...  Purpose/Objective: Organ motion during respiration increases the component of normal tissue included within the ITV.  ... 
doi:10.1016/s0167-8140(15)32469-5 fatcat:wexqza3jfbds7oq7yov2e6name

EP-1241: Dosimetric effects of intra-fractional target motion in TomoTherapy

Y.W. Ho, S.G. Lo, K.Y. Cheung, S.K. Yu
2013 Radiotherapy and Oncology  
a motion amplitude of 1.0 cm.  ...  Purpose/Objective: To evaluate the dosimetric effects of target motion in TomoTherapy radiation treatment planned with and without the internal target volume (ITV).  ... 
doi:10.1016/s0167-8140(15)33547-7 fatcat:sajmtwgcnrgrxdmoshhrlsjwga

OC-0164: Assessment of respiratory induced motion of target area and organs at risk in radiotherapy for breast cancer patients

A. Betgen, T. Alderliesten, P.H. Elkhuizen, C. van Vliet-Vroegindeweij, P. Remeijer
2013 Radiotherapy and Oncology  
Purpose/Objective: A remaining uncertainty in breast cancer irradiation is the effect of respiratory induced motion on target area and organs at risk.  ...  Purpose/Objective: Organ motion during respiration increases the component of normal tissue included within the ITV.  ...  Purpose/Objective: Organ motion during respiration increases the component of normal tissue included within the ITV.  ... 
doi:10.1016/s0167-8140(15)32470-1 fatcat:dz62khatyfccxceffkbrwn7j4e

EP-1240: Different gating methods and possible pitfalls for clinical implementation

F. Lorenz, M. Paris
2013 Radiotherapy and Oncology  
a motion amplitude of 1.0 cm.  ...  Purpose/Objective: To evaluate the dosimetric effects of target motion in TomoTherapy radiation treatment planned with and without the internal target volume (ITV).  ... 
doi:10.1016/s0167-8140(15)33546-5 fatcat:nvwbgxcwnba55l3sfmsvt5shb4

A simplified method of four-dimensional dose accumulation using the mean patient density representation

Carri K. Glide-Hurst, Geoffrey D. Hugo, Jian Liang, Di Yan
2008 Medical Physics (Lancaster)  
A series of 4DCT numerical phantoms and corresponding AVG-CTs were generated.  ...  fields ͑DVFs͒ describing patient-specific motion.  ...  Phantom analysis III.A.1. Motion magnitude Table II summarizes the key findings from the dose discrepancy analysis for the numerical phantom study.  ... 
doi:10.1118/1.3002304 pmid:19175086 pmcid:PMC2673609 fatcat:aoc5jggbg5fftnexnfbj33jaru

Evaluation and commissioning of a surface based system for respiratory sensing in 4D CT

Maria Francesca Spadea, Guido Baroni, David P. Gierga, Julie C. Turcotte, George T.Y. Chen, Gregory C. Sharp
2010 Journal of Applied Clinical Medical Physics  
Errors are mainly due to phase detection inaccuracies and to the large motion of the phantom.  ...  A clinical CT scanner, run in cine mode, was used with two optical devices, GateCT and RPM, to detect respiratory motion.  ...  III. rESuLTS A. Experiment 1 B. Experiment 2 A more detailed analysis of RPM vs. GCT per phases is presented in Table 4 .  ... 
doi:10.1120/jacmp.v12i1.3288 fatcat:4sj3sgk2uzapxjtjs4fcex5wji

Looking into the Crystal Ball—How Automated Fast-Time Simulation Can Support Probabilistic Airport Management Decisions

Oliver Pohling, Sebastian Schier-Morgenthal, Sandro Lorenz
2022 Aerospace (Basel)  
These systems consist of a user interface, a case management system, and a prediction engine.  ...  Within this paper, we evaluate different types of prediction engines (flow, event, and motion models) that can be used for airport management what-if systems by comparing them in terms of accuracy and  ...  Conflicts of Interest: The authors declare no conflict of interest.  ... 
doi:10.3390/aerospace9070389 fatcat:rzafv6dyrvez7lxhvkiq4mmcfm

Three-Dimensional Atmospheric Angular Momentum Simulated by the Japan Meteorological Agency Model for the Period of 1955-1994
気象庁モデルによってシミュレートされた1955年-1994年の3次元大気角運動量

Isao Naito, Y. -H. Zhou, Masato Sugi, Ryuichi Kawamura, Nobuo Sato
2000 Journal of the Meteorological Society of Japan  
The model results are compared with those from the reanalysis data of the National Centers for Environmental Prediction (NCEP) and the operational objective analysis data of JMA and with the functions  ...  inferred from the observed length of day (LOD) and polar motion.  ...  Salstein for providing the AAM function data based on the reanalysis data of NCEP/NCAR, JMA for providing the operational objective data since 1983, and R. Rosen and T. Iwasaki for discussions. Y.-H.  ... 
doi:10.2151/jmsj1965.78.2_111 fatcat:fziky22ekze6pcyd576t5dsjvq

Page 792 of JAMA Otolaryngology - Head & Neck Surgery Vol. 16, Issue 6 [page]

1932 JAMA Otolaryngology - Head & Neck Surgery  
—Periodic motion of an object with to and fro movement. A-B indi- cates to movement; B-A, fro movement, the two phases in one complete double vibration.  ...  For an object with a periodic to and fro motion, the motion is again represented by a zigzag line (fig. 2).  ... 

Domain-Specific Suppression for Adaptive Object Detection [article]

Yu Wang, Rui Zhang, Shuo Zhang, Miao Li, YangYang Xia, XiShan Zhang, ShaoLi Liu
2021 arXiv   pre-print
We propose a new perspective on how CNN models gain the transferability, viewing the weights of a model as a series of motion patterns.  ...  Our experiment results show significant advance over the state-of-the-art methods in the UDA object detection field, performing a promotion of 10.2∼12.2% mAP on all these domain adaptation scenarios.  ...  As a neural network can be viewed as a series of motion patterns transforming the input to a task-friendly feature space, the entire process can be roughly divided into two phases: decomposing the input  ... 
arXiv:2105.03570v1 fatcat:44qi7evalvfbliqnhcz6je57ai

Global Motion Percept Mediated through Integration of Barber Poles Presented in Bilateral Visual Hemifields

Li-Ting Huang, Alice M. K. Wong, Carl P. C. Chen, Wei-Han Chang, Ju-Wen Cheng, Yu-Ru Lin, Yu-Cheng Pei, Mark W. Greenlee
2013 PLoS ONE  
of motion by human observers.  ...  Surprisingly, when the inter-component distance between the two apertures was short, the perceived direction of motion of the dual barber poles was similar to that of a single barber pole formed by the  ...  For example, when confronted with moving images, the human brain has to decide whether the motion signals arise from a single object or from multiple objects.  ... 
doi:10.1371/journal.pone.0074032 pmid:24009764 pmcid:PMC3756956 fatcat:z5mx6yfdcvfs7iajbmwrc2et3q

Comparison of the Effect of Insole Correction on Three-Dimensional Knee Joint Moments during Gait in Standing Workers with Leg Length Discrepancy

Yongwook Kim
2021 Journal of Musculoskeletal Science and Technology  
limb joints using objective and highly functional tools such as a motion analysis system.  ...  Motion analysis A Vicon Motion Analysis System (Vicon Inc., Oxford, England) with eight cameras (T10 model) and two force platforms (AMTI, Watertown, MA, USA) was used to obtain 3D kinetics data of the  ... 
doi:10.29273/jmst.2021.5.1.21 fatcat:ka2f3gxc7vfmvag2s3sg6ec4de

Towards Semantic SLAM: 3D Position and Velocity Estimation by Fusing Image Semantic Information with Camera Motion Parameters for Traffic Scene Analysis

Mostafa Mansour, Pavel Davidson, Oleg Stepanov, Robert Piché
2021 Remote Sensing  
First, a 2D virtual image of the scene is made using a prior knowledge of the 3D Computer Aided Design (CAD) models of the detected cars and their predicted positions.  ...  Then, a discrepancy, i.e., distance, between the actual image and the virtual image is calculated.  ...  Conflicts of Interest: The authors declare no conflict of interest.  ... 
doi:10.3390/rs13030388 fatcat:gry5f6wq3bfkzg6d77vcqb7de4

NIR integral field spectroscopy of high mass young stellar objects

K. Murakawa, S. L. Lumsden, R. D. Oudmaijer, B. Davies, M. G. Hoare
2012 Proceedings of the International Astronomical Union  
The data show the spectral features of Brγ, H 2 , and gas phase CO emissions and absorptions with a spectral resolution of R ≈ 5500, which allow a three-dimensional spectroastrometric analysis of the line  ...  We present K-band Integral Field Spectroscopy of six high mass young stellar objects (IRAS 18151-1208, AFGL 2136, S106 IRS4, V645 Cyg, IRAS 19065+0526, and G082.5682+ 00.4040) obtained using the adaptive  ...  In IRAS 18151-1208, the orientation of the rotating motion is perpendicular to the jet direction see in our Brγ data. The PV relationship can be explained with a model with a central mass of 30 M .  ... 
doi:10.1017/s1743921313000343 fatcat:dgutgewgcjfu3m6pk7bg3esooi
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