Journal ArticleDOI
Tracking nonparameterized object contours in video
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TLDR
The inverted distance transform of the edge map is used as an edge indicator function for contour detection and the problem of background clutter can be relaxed by taking the object motion into account.Abstract:
We propose a new method for contour tracking in video. The inverted distance transform of the edge map is used as an edge indicator function for contour detection. Using the concept of topographical distance, the watershed segmentation can be formulated as a minimization. This new viewpoint gives a way to combine the results of the watershed algorithm on different surfaces. In particular, our algorithm determines the contour as a combination of the current edge map and the contour, predicted from the tracking result in the previous frame. We also show that the problem of background clutter can be relaxed by taking the object motion into account. The compensation with object motion allows to detect and remove spurious edges in background. The experimental results confirm the expected advantages of the proposed method over the existing approaches.read more
Citations
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Journal ArticleDOI
Visual Tracking: An Experimental Survey
Arnold W. M. Smeulders,Dung M. Chu,Rita Cucchiara,Simone Calderara,Afshin Dehghan,Mubarak Shah +5 more
TL;DR: It is demonstrated that trackers can be evaluated objectively by survival curves, Kaplan Meier statistics, and Grubs testing, and it is found that in the evaluation practice the F-score is as effective as the object tracking accuracy (OTA) score.
Journal ArticleDOI
Comparative study of vision tracking methods for tracking of construction site resources
TL;DR: A comparative study of various vision tracker categories is carried out, to identify which one is most effective in tracking construction resources and the most suitable tracker needed to research effective 3D vision trackers of construction resources.
Patent
Method for minimizing visual artifacts converting two-dimensional motion pictures into three-dimensional motion pictures
TL;DR: In this paper, a method for converting two-dimensional images into 3D images was proposed, tracking an object in an image, the object having an object edge and an object outline thereabout, from frame to frame over a sequence of images.
Journal ArticleDOI
Accurate object contour tracking based on boundary edge selection
TL;DR: The experimental results demonstrate that the proposed tracking approach is robust enough to handle a complex-textured scene in a mobile camera environment.
Patent
Multi-stage production pipeline system
TL;DR: In this paper, the authors present a multi-stage production pipeline system that enables a large studio workforce to work non-linearly on a film while maintaining a unified vision driven by key creative figures, allowing for more consistent, higher quality, faster, less expensive work product and more efficient project management techniques.
References
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Journal ArticleDOI
Snakes : Active Contour Models
TL;DR: This work uses snakes for interactive interpretation, in which user-imposed constraint forces guide the snake near features of interest, and uses scale-space continuation to enlarge the capture region surrounding a feature.
Journal ArticleDOI
Fronts propagating with curvature-dependent speed: algorithms based on Hamilton-Jacobi formulations
Stanley Osher,James A. Sethian +1 more
TL;DR: The PSC algorithm as mentioned in this paper approximates the Hamilton-Jacobi equations with parabolic right-hand-sides by using techniques from the hyperbolic conservation laws, which can be used also for more general surface motion problems.
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Image Analysis and Mathematical Morphology
TL;DR: This invaluable reference helps readers assess and simplify problems and their essential requirements and complexities, giving them all the necessary data and methodology to master current theoretical developments and applications, as well as create new ones.
Journal ArticleDOI
C ONDENSATION —Conditional Density Propagation forVisual Tracking
Michael Isard,Andrew Blake +1 more
TL;DR: The Condensation algorithm uses “factored sampling”, previously applied to the interpretation of static images, in which the probability distribution of possible interpretations is represented by a randomly generated set.
Journal ArticleDOI
Geodesic active contours
TL;DR: A novel scheme for the detection of object boundaries based on active contours evolving in time according to intrinsic geometric measures of the image, allowing stable boundary detection when their gradients suffer from large variations, including gaps.
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