公开(公告)号：US20220198778A1

公开(公告)日：2022-06-23

申请号：US17539261

申请日：2021-12-01

Applicant: Axis AB

Inventor： Niclas DANIELSSON ,  Haochen LIU

IPC: G06V10/74 ,  G06V10/762 ,  G06N3/04 ,  G06V10/82 ,  G06V10/44

Abstract: A method and a device associate an object detection in a first frame with an object detection in a second frame using a convolutional neural (CNN) network trained to determine feature vectors such that object detections relating to separate objects are arranged in separate clusters. The CNN determines a reference set of feature vectors associated with the object detection in the first frame, and candidate sets of feature vectors associated with a respective one of identified areas corresponding to object detections in the second frame. A set of closest feature vectors is determined, and then measure of closeness to the reference set of feature vectors is determined for each candidate. A respective weight is determined for each object detection in the second frame. The object detection in the first frame is associated with one of the object detections in the second frame based on the assigned weights.