Patent ID: 7636453
Filing Date: 2009-12-22
Classification: G06K

Abstract:
1. A video data processing apparatus, that processes video data including a sequence of images, said apparatus comprising: an object tracker unit configured to detect a presence of one or more objects within an image and to track a detected object across successive images; an identity association unit configured to associate an identity with an object tracked by said object tracker unit; a counter unit configured to, for a first and second identity, count a number of images within which a tracked object associated with said first identity and a tracked object associated with said second identity have both been detected; and a similarity detector unit configured to determine whether two tracked objects are similar in appearance, wherein said identity association unit is further configured to change said identity associated with a first tracked object to said identity associated with a second tracked object if: wherein said counter unit is further configured, when said identity association unit has changed a first identity associated with a first tracked object to a second identity associated with a second tracked object, not to count a number of images within which a tracked object associated with said first identity and a tracked object associated with any other identity have both been detected.