The goal of this article is to review the state-of
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The goal of this article is to review the state-of-the-art tracking methods, classify them into different categories,
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. In this survey, we categorize the tracking methods on the basis of the object and
motion representations used, provide detailed descriptions of representative methods in each category, and
examine their pros and cons.Moreover, we discuss the important issues rel