Object Tracking: A Survey - UCF CRCV

Object Tracking: A Survey Alper Yilmaz Ohio State University Omar Javed ObjectVideo, Inc. and Mubarak Shah University of Central Florida The goal of this article is to review the state-of-the-art tracking methods, classify them into different cate- gories, and identify new trends. Object tracking, in general, is a challenging problem. Difficulties in tracking objects can arise due to abrupt Object motion, changing appearance patterns of both the Object and the scene, nonrigid Object structures, Object -to- Object and Object -to-scene occlusions, and camera motion. Tracking is usually performed in the context of higher-level applications that require the location and/or shape of the Object in every frame. Typically, assumptions are made to constrain the tracking problem in the context of a particular application.

patch, (d) elliptical patch, (e) part-based multiple patches, (f) object skeleton, (g) complete object contour, (h) control points on object contour, (i) object silhouette. —Articulated shape models. Articulated objects are composed of body parts that are held together with joints. For example, the human body is an articulated object with

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