公开(公告)号：US20240404289A1

公开(公告)日：2024-12-05

申请号：US18325650

申请日：2023-05-30

Applicant: MOTOROLA SOLUTIONS, INC.

Inventor： Aleksey Lipchin ,  Maksim Bolonkin ,  Yang Liu ,  Sergey Veselkov

IPC: G06V20/52 ,  G06V10/62 ,  G06V20/40

Abstract: Examples provide a video security system including an electronic processor configured to detect an anomaly by obtaining video data captured using an image sensor and determining a number of people detected in each of a plurality of frames of the video data. For each moment t, the electronic processor determines an average number of people n over a time interval (t-Δt1, t), where Δt1 is greater than or equal to the moment t. For each non-overlapping time interval Δt1, the electronic processor updates a histogram based on the average number of people for the time interval Δt1. In response to determining, using the histogram, that the probability ρ of the average number of people n over the time interval (t-Δt1, t) is less than a threshold probability ρ*, the electronic processor generates an alert indicating that an anomalous crowd size is detected.