Video object fragmentation detection and management

摘要

Disclosed herein are a computer-implemented method and a camera system for determining a current spatial representation for a detection in a current frame of an image sequence. The method derives an expected spatial representation (820) for the detection based on at least one previous frame, generates a spatial representation (810) of the detection, and extends the spatial representation (810) to obtain an extended spatial representation (830), based on the expected spatial representation (820). The method determines a similarity measure between the extended spatial representation (830) and the expected spatial representation (820), and then determines the current spatial representation for the detection based on the similarity measure.

主权项

1. A computer-implemented method of tracking an object in an image sequence, said method comprising the steps of:
detecting an object from a current frame in the image sequence; deriving an expected spatial representation for the object in the current frame based on information of the tracked object obtained from at least one previous frame; generating a spatial representation of the detected object; extending the spatial representation of the detected object to obtain an extended spatial representation, based on the expected spatial representation; calculating a similarity between the extended spatial representation and the expected spatial representation; determining the detected object as a fragment of the tracked object, if the similarity is above a threshold; and updating the information of the tracked object using the determined fragment of the tracked object.