Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 55 for “"Background subtraction"”.
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Background subtraction by disparity warping
Thesis (S.B. and M.Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1998.
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An improved Gaussian mixture model algorithm for background subtraction
Thesis (M.Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2002.
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Online robust principal component analysis for background subtraction: a system evaluation on Toyota car data
… show that RPCA provides good results for background subtraction problems. In this thesis, we further the exploration to online versions of RPCA algorithms. The proposed Online Robust Principal Component Analysis (ORPCA) is used to process big data in a more efficient way. We also test the …
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A foreground detection system for automatic surveillance
… segmenting foreground objects from the static background in the videos. In this thesis we introduce a novel system for background subtraction, which takes a di erent approach than the conventional background subtraction systems. We make the assumption that the video background is stationary and …
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Improved robustness and efficiency for automatic visual site monitoring
… such as adverse lighting conditions, distracting background motions, appearance changes over time, and occlusions. In this thesis, we present a set of techniques and model enhancements to better handle these problems, focusing on contributions in four areas. First, we improve background …
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Low power image based triggering for extended operation surveillance
… the imager. Triggering is done by performing background subtraction on the low resolution imagery to detect scene changes. Although there is extensive research on this subject, no known research has attempted to implement this type of algorithm in a low power system, which puts a significant …
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Computer Vision Tracking of sUAS From a Pan/Tilt Platform
… based on application. This thesis examines background subtraction methods as they apply to the tracking of small unmanned aerial systems (sUAS). A system combining commercial off-the-shelf (COTS) cameras and a pan-tilt unit (PTU), along with custom developed code, is developed for the …
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Oxygen as a Mass Transport Probe in Polymer Films (Chronocoulometry, Hydrodynamic)
… of permeation coefficients. (kD(,S)). A background-subtraction chronocoulometric technique allows the examination of diffusion behavior within such films primarily in a chosen oxidation state. For the system investigated, oxygen diffusion occurs either rapidly or within polymer-enclosed …
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A reliable middleware for query-centric event detection over resource-constrained networks
… Lastly, it is presented that the implemented background subtraction-based video streaming strategy in the middleware has more minor average lags in static scenes compared with HLS streaming. Some future directions are also discussed at the end of this paper.
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Smart Environment Based On Real-Time Human Position Tracking For Remote Presence And Collaboration
… the location information was developed using background subtraction in MATLAB. The proposed approach was developed using the combination of background subtraction and neural networks along with heuristics based on spatial information about the physical space. The system was scaled to work …
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Vehicle detection and tracking using wireless sensors and video cameras
… and localize the position of moving vehicle. Background subtraction method is used to detect the moving vehicle from the video sequences. Vehicle centroid is calculated in each frame. A non-linear minimization method is used to estimate the perspective transformation which project 3D points to …
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Development of a frequency-domain electromagnetic scattering measurement system
… algorithm was created using MatLab for background subtraction, calibration, and deconvolution. A set of RCS measurements was made using various size spheres, and the postprocessing outputs were compared to computed values. Good agreement between these measurements and computed data …
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A statistical approach for shadow detection using spatio-temporal contexts
Background subtraction is an important step used to segment moving regions in surveillance videos. However, cast shadows are often falsely labeled as foreground objects, which may severely degrade the accuracy of object localization and detection. Effective shadow detection is necessary for …
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Birds/Bats Motion Tracking with Infrared Radiation Camera for Wind Farm Applications
… this project. The propose algorithm consists of background subtraction and consecutive frame subtraction, frame selection, 3-D region labeling and breakpoint recovery. It has been simulated for performance evaluation. It is then used to process spring 2011 bird migration data that has been …
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Obstacle Detection and Avoidance System for Unmanned Aerial Vehicles Based on Monocular Camera
… combines traditional detection methods like background subtraction with advanced deep-learning techniques for improved reliability to create initial detection zones, further refined by target tracking methods for increased accuracy and depth predictor for getting estimated distance. …
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Study of muons associated with jets in proton-antiproton collision at [square root]s = 1.8 TeV
… are described. Detailed calculations of the muon background due to meson decay and hadron noninteractive punchthrough are presented, and other background sources are evaluated. Distributions of muon transverse momentum relative to the beam and to the jet axis agree with QCD expectations for …
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Study of muons associated with jets in proton-antiproton collisions at sqrt.s = 1.8 TeV
… are described. Detailed calculations of the muon background due to meson decay and hadron noninteractive punchthrough are presented, and other background sources are evaluated. Distributions of muon transverse momentum relative to the beam and the jet axis agree with QCD expectations for …
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Learning static object segmentation from motion segmentation
… in static images from video data. SANE uses background subtraction to find the segmentation of moving objects in videos. This provides object segmentation information for each video frame. The collection of frames and segmentations forms a training set that SANE uses to learn the image and …
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Photoproduction of ηc mesons in ultra-peripheral Pb+Pb collisions at √sNN= 5.02 TeV at the LHC
… kaons in the final state were analyzed. After background subtraction, a total of 28.3 ± 13.0 ± 7.5 ηc candidates, and 25.3 ± 6.8 ± 0.81 J/ψ candidates were observed. The first uncertainty is statistical and the second uncertainty is systematic. The upper limit for the photoproduction cross …
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