OBJECT TRACKING METHOD, DEVICE, AND SYSTEM AS WELL AS RELEVANT PROGRAM AND NON-TRANSITORY COMPUTER-READABLE MEDIUM

摘要

Disclosed is an object tracking method including steps of extracting prior convex hulls in an object template of a prior frame, which includes at least a prior torso convex hull and prior limb convex hulls; detecting a portion corresponding to the prior torso convex hull, in a current frame as a current torso portion; extracting current limb convex hulls from a surrounding region of the current torsos portion in the current frame; for each of the prior limb convex hulls, rotating, based on principal gradient directions of the current and prior limb convex hulls, each of the current limb convex hulls so as to let its principal gradient direction be consistent with the principal gradient direction of the corresponding prior limb convex hull; seeking rotated current limb convex hulls matching the prior limb convex hulls, respectively; and determining, based on the matching results, an object template in the current frame for achieving object tracking.