Filters








115,031 Hits in 6.1 sec

Multi-target tracking of time-varying spatial patterns

Jingchen Liu, Yanxi Liu
2010 2010 IEEE Computer Society Conference on Computer Vision and Pattern Recognition  
We propose a multi-target tracking framework that takes advantage of spatial patterns inside the targets even though the number, the form and the regularity of such patterns vary with time.  ...  Time-varying spatial patterns are common, but few computational tools exist for discovering and tracking multiple, sometimes overlapping, spatial structures of targets.  ...  To track multiple targets that have time-varying spatial patterns, we face two intertwined problems: 1) To recognize the (dis)appearance of spatial patterns from target locations; 2) To utilize pattern  ... 
doi:10.1109/cvpr.2010.5539855 dblp:conf/cvpr/LiuL10 fatcat:2mvgf6kjxnc6fc7yohd7nslqvi

Multi-Target Tracking Using Windowed Fourier Single-Pixel Imaging

Jinyu Zhang, Taiyang Hu, Xiaolang Shao, Mengxuan Xiao, Yingjiao Rong, Zelong Xiao
2021 Sensors  
This method provides, for the first time, an effective idea of multi-target tracking using SPI.  ...  The WFSI technique uses a series of windowed Fourier basis patterns to illuminate the target.  ...  We also analyzed the effectiveness of multi-target tracking through a video experiment. Consequently, the proposed method enables multi-target tracking in real-time and for a long duration.  ... 
doi:10.3390/s21237934 pmid:34883939 fatcat:xmjd4hh4oje2hgbqc7lh3u2fp4

Multi-source Multi-modal Activity Recognition in Aerial Video Surveillance

Riad I. Hammoud, Cem S. Sahin, Erik P. Blasch, Bradley J. Rhodes
2014 2014 IEEE Conference on Computer Vision and Pattern Recognition Workshops  
FMV target tracks and chat messages as graphs of attributes, (3) associating FMV tracks and chat messages using a probabilistic graph-based matching approach, and (4) detecting spatial-temporal activity  ...  We present a multi-source multi-modal activity/event recognition system for surveillance applications, consisting of: (1) detecting and tracking multiple dynamic targets from a moving platform, (2) representing  ...  The ideas and opinions expressed here are not official policies of the United States Air Force.  ... 
doi:10.1109/cvprw.2014.44 dblp:conf/cvpr/HammoudSBR14 fatcat:p7pqnfbzefdplpm5eztcgk2lge

Automatic Association of Chats and Video Tracks for Activity Learning and Recognition in Aerial Video Surveillance

Riad Hammoud, Cem Sahin, Erik Blasch, Bradley Rhodes, Tao Wang
2014 Sensors  
MINER includes: (1) a fusion of graphical track and text data using probabilistic methods; (2) an activity pattern learning framework to support querying an index of activities of interest (AOIs) and targets  ...  VIVA utilizes analyst call-outs (ACOs) in the form of chat messages (voice-to-text) to associate labels with video target tracks, to designate spatial-temporal activity boundaries and to augment video  ...  The ideas and opinions expressed here are not official policies of the United States Air Force.  ... 
doi:10.3390/s141019843 pmid:25340453 pmcid:PMC4239870 fatcat:ony3ylej4nhzxbnap2zide3kwi

Tracking Pedestrians Using Local Spatio-Temporal Motion Patterns in Extremely Crowded Scenes

L. Kratz, K. Nishino
2012 IEEE Transactions on Pattern Analysis and Machine Intelligence  
and temporally varying structured pattern.  ...  In this paper, we present a novel Bayesian framework for tracking pedestrians in videos of crowded scenes using a space-time model of the crowd motion.  ...  By doing so, we model the time-varying dynamics of the crowd motion that occurs at and across different spatial locations of the video.  ... 
doi:10.1109/tpami.2011.173 pmid:21844618 fatcat:ut3p6hdbyjb6zdzddre7sphm7a

Running safety assessment of a train traversing a three-tower cable-stayed bridge under spatially varying ground motion

Wei Gong, Zhihui Zhu, Yu Liu, Ruitao Liu, Yongjiu Tang, Lizhong Jiang
2020 Railway Engineering Science  
The multi-time-step method previously proposed by the authors is also adopted to improve computational efficiency.  ...  To explore the influence of spatially varying ground motion on the dynamic behavior of a train passing through a three-tower cable-stayed bridge, a 3D traintrack-bridge coupled model is established for  ...  To view a copy of this licence, visit http://creativecommons. org/licenses/by/4.0/.  ... 
doi:10.1007/s40534-020-00209-8 fatcat:5kx6xca7ujg7hfkxtfmlw4r7fm

An ICA-SCT-PHD Filter Approach for Tracking and Separation of Unknown Time-Varying Number of Sources

A. Masnadi-Shirazi, B. D. Rao
2013 IEEE Transactions on Audio, Speech, and Language Processing  
In this paper we present a solution to the problem of tracking and separation of a mixture of concurrent sources in a reverberant environment where the number of sources is unknown and varies with time  ...  The PHD filter is based on random finite sets (RFS) where the multi-target states and the number of targets are integrated to form a set-valued variable with uncertainty in the number of sources.  ...  Recently, methods based on random finite sets (RFS) have presented promising and mathematically elegant solutions to the problem of multi-target tracking (MTT) for time-varying number of targets [16]  ... 
doi:10.1109/tasl.2012.2236318 fatcat:iaf7fhbhznbnbnum4ucjt3c5uu

Spatial data mining to support pandemic preparedness

Chris Bailey-Kellogg, Naren Ramakrishnan, Madhav V. Marathe
2006 SIGKDD Explorations  
Effective detection of and response to pandemic disease outbreaks require significant advances in data mining.  ...  Contributions to the recently held SIAM DM 2006 Workshop on Spatial Data Mining highlighted key challenges, directions, and progress in this context.  ...  Acknowledgments: We sincerely thank the group members of NDSSL for their help in creating the synthetic datasets.  ... 
doi:10.1145/1147234.1147246 fatcat:nkvcbwqjsjfqjmbjnb7d3ji6ia

HIGH TEMPORAL RESOLUTION PERMAFROST MONITORING USING A MULTIPLE STACK INSAR TECHNIQUE

J. Eppler, M. Kubanski, J. Sharma, J. Busler
2015 The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences  
The best spatial coverage of coherent targets was achieved when data from all sensors were combined.  ...  These dynamics suggest a need for increasing the temporal resolution of multi-temporal InSAR methods.  ...  The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Volume XL-7/W3, 2015 36th International Symposium on Remote Sensing of Environment, 11-15 May 2015, Berlin  ... 
doi:10.5194/isprsarchives-xl-7-w3-1171-2015 fatcat:khtrequh4zgunjv3r6hcud7qbq

Tracking Dynamic Near-Regular Texture Under Occlusion and Rapid Movements [chapter]

Wen-Chieh Lin, Yanxi Liu
2006 Lecture Notes in Computer Science  
Without any assumptions on the types of motion, camera model or lighting conditions, our tracking algorithm can effectively capture the varying underlying lattice structure of a dynamic NRT in different  ...  real world examples, including moving cloth, underwater patterns and marching crowd.  ...  Collins for providing the crowd motion video and proofreading this paper; Jing Xiao, Jiayong Zhang, Chieh-Chih Wang and Sanjiv Kumar for their suggestions on our tracking algorithm; Jasmine Collins for  ... 
doi:10.1007/11744047_4 fatcat:5o6kfssdzvernd7x7gern3q6h4

Tracking in unstructured crowded scenes

Mikel Rodriguez, Saad Ali, Takeo Kanade
2009 2009 IEEE 12th International Conference on Computer Vision  
The case of tracking in structured crowded scenes, where the crowd moves coherently in a common direction, and the direction of motion does not vary over time, was previously handled in [1] .  ...  This means each spatial location in such scenes supports more than one, or multi-modal, crowd behavior.  ...  In a structured crowded scene, the crowd moves coherently in a common direction, and the direction of motion does not vary over time.  ... 
doi:10.1109/iccv.2009.5459301 dblp:conf/iccv/RodriguezAK09 fatcat:q2pep5wptvettpbygfpxna5ev4

Impact Of Hrr Radar Processing On Moving Target Identification Performance

Bart Kahler, Erik Blasch
2009 Zenodo  
Airborne radar tracking in moving ground vehicle scenarios is impacted by sensor, target, and environmental dynamics.  ...  to help maintain track or to identify the vehicle.  ...  The spatially varying difference, (5) is then determined.  ... 
doi:10.5281/zenodo.22978 fatcat:jutd2tkp3zh5dgd4o5lk2lwmcu

Target Localization and Tracking by Fusing Doppler Differentials from Cellular Emanations with a Multi-Spectral Video Tracker

Casey Demars, Michael Roggemann, Adam Webb, Timothy Havens
2018 Sensors  
We present an algorithm for fusing data from a constellation of RF sensors detecting cellular emanations with the output of a multi-spectral video tracker to localize and track a target with a specific  ...  The multi-spectral video tracker uses a Gaussian mixture model to detect foreground targets and SIFT features to track targets through the video sequence.  ...  Conflicts of Interest: The authors declare no conflict of interest.  ... 
doi:10.3390/s18113687 fatcat:eq7bm6yjo5d73eatikxru4ojxy

Multi-track PS-InSAR datum connection

Gini Ketelaar, Freek van Leijen, Petar Marinkovic, Ramon Hanssen
2007 2007 IEEE International Geoscience and Remote Sensing Symposium  
This is obtained by means of the datum connection of multiple tracks, simultaneously evaluating the misclosures between multi-track PS-InSAR estimates.  ...  In stead of the conventional approach of separately geocoding each track, we propose the use of a common radar datum defined by the acquisition geometry of the 'master track'.  ...  Subsidence at ground level has the spatial pattern of a smooth ellipsoidal bowl, with maximum displacement rates of approximately 7 mm/year that are (nearly) linear in time.  ... 
doi:10.1109/igarss.2007.4423346 dblp:conf/igarss/KetelaarLMH07 fatcat:f7uvnbssrnbgdlgteq4zwdxksa

Robust Visual Multi Target Trackers: A Review

Pavan Kumar E, Manojkumar Rajgopal
2018 Indonesian Journal of Electrical Engineering and Computer Science  
In the present scenario number of algorithms and methods are used to track the object in the different scene, a robust visual object tracking remains a critical challenge.  ...  <p>In this review paper, we address on the state-of-art process with visual object tracking in video surveillance, medical and military applications.  ...  The accurate illumination changes in the tracking of the object are achieved by PF  By using color PF in the tracking of an object, it is more immune to illumination.Robust Visual Multi-Target Trackers  ... 
doi:10.11591/ijeecs.v12.i1.pp7-16 fatcat:322burlzvvgezbucvnhvpg3v2m
« Previous Showing results 1 — 15 out of 115,031 results