公开(公告)号：US20240104760A1

公开(公告)日：2024-03-28

申请号：US18244337

申请日：2023-09-11

Applicant: Axis AB

Inventor： Song YUAN ,  Ludvig HASSBRING

IPC: G06T7/70 ,  G06T7/12 ,  G06V10/25 ,  G06V20/52

CPC classification number: G06T7/70 ,  G06T7/12 ,  G06V10/25 ,  G06V20/52 ,  G06T2207/30242 ,  G06V2201/07

Abstract: A method includes detecting a first object in a first area of a scene; determining, based on characteristics of the first object, a first probability value indicating a first probability that the detected first object; detecting a second object in a second area of the scene captured in a second stream of image frames by a second camera of the camera system different from the first camera, wherein the second area at least partly overlaps the first area; determining, based on characteristics of the second object, a second probability value indicating a second probability that the detected second object; and when the second probability value is below a second threshold value and the first probability value is above a first threshold value determining an updated second probability value by increasing the second probability value.

公开(公告)号：US20230394824A1

公开(公告)日：2023-12-07

申请号：US18322789

申请日：2023-05-24

Applicant: Axis AB

Inventor： Ludvig HASSBRING ,  Song YUAN

IPC: G06V20/40 ,  G06T7/246 ,  G06T7/73 ,  G06V20/52

CPC classification number: G06V20/41 ,  G06T7/248 ,  G06T7/74 ,  G06V20/52 ,  G06T2207/10016 ,  G06T2207/30232

Abstract: A system and techniques for detecting a reflection of an object in a sequence of image frames. Objects of a given type are detected in the sequence of image frames, and a detection score is determined for each detected object. Distance ratios between unfiltered object position indicators identified for each detected object are determined. A displacement factor is determined for each detected object between a current location of the detected object and a previous location of the detected object. One of the two detected objects which has a lower detection score is a reflection of the other of the two detected objects is determined in response to finding a match between normalized sizes and normalized movements of the detected objects.