NDLI: Tracking based on local motion estimation of spatio-temporally weighted salient points

Content Provider	IEEE Xplore Digital Library
Author	Garcia, V. Debreuve, E. Barlaud, M.
Copyright Year	2007
Description	Author affiliation: Univ. de Nice-Sophia Antipolis, Nice (Garcia, V.; Debreuve, E.; Barlaud, M.)
Abstract	The extraction of a video object contour, called "rotoscoping" in cinematographic post-production, is usually performed manually and frame by frame. Semi-automatic algorithms have been proposed to reduce the load of this task. However, they classically use region information and are usually based on a notion of homogeneity of the object. This homogeneity description might be difficult to establish and, consequently, the tracking may be not precise enough. The proposed method relies on the analysis of some temporal trajectories of salient points, or keypoints, called tracks. The main contribution of this paper is the local estimation, both spatially and temporally, of the contour motion from these tracks. The proposed method seems accurate, robust to outliers, and allows local deformation. Moreover, it can deal with partial occlusions.
Starting Page	37
Ending Page	37
File Size	1524462
Page Count	1
File Format	PDF
ISBN	076952818X
DOI	10.1109/WIAMIS.2007.82
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-06-06
Publisher Place	Greece
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Image segmentation Tracking Motion estimation Cinematography Visual effects Animation Robustness Trajectory Data mining Tellurium
Content Type	Text
Resource Type	Article

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