US-20260129402-A1 - METHOD AND SYSTEM FOR IDENTIFYING A FIGHT

US20260129402A1US 20260129402 A1US20260129402 A1US 20260129402A1US-20260129402-A1

Abstract

A method and system for detecting a fight are provided. The method includes detecting, via a processing and analytics engine associated with a security camera of a communication system, that a gathering of individuals is within a field of view (FOV) of the security camera, determining a presence of a plurality of cell phones associated with the gathering of individuals; monitoring position and changes in position of each cell phone of the plurality of cell phones associated with the gathering relative to a respective cell phone owner; comparing the position and change of position to predetermined cell phone positioning thresholds stored in a memory associated with the processing and analytics engine; identifying a fight incident in response to breaches of the predetermined cell phone positioning thresholds; and generating and sending an alert indicative of the fight incident to a security radio associated with the communication system.

Inventors

Filip Norys

Assignees

MOTOROLA SOLUTIONS, INC.

Dates

Publication Date: 20260507
Application Date: 20241107

Claims (19)

1 . A method of detecting a fight, comprising: detecting, via a processing and analytics engine associated with a security camera of a communication system, that a gathering of individuals is within a field of view (FOV) of the security camera; determining a presence of a plurality of cell phones associated with the gathering of individuals; monitoring position and changes in position of each cell phone of the plurality of cell phones associated with the gathering relative to a respective cell phone owner; comparing the position and change of position to predetermined cell phone positioning thresholds stored in a memory associated with the processing and analytics engine; identifying a fight incident in response to breaches of the predetermined cell phone positioning thresholds; and. generating and sending an alert indicative of the fight incident to a security radio associated with the communication system.
2 . The method of claim 1 , wherein monitoring further comprises: measuring, via the processing and analytics engine, parameters associated with the gathering of individuals and cell phones within the FOV of the security camera; and aggregating the measured parameters to verify the identified fight incident.
3 . The method of claim 1 , wherein the method of detecting a fight is applied to a building having a hallway, the hallway being associated with a predictive human traffic flow monitored by the security camera.
4 . The method of claim 3 , wherein the hallway is a school hallway where students change classrooms based on a predetermined classroom schedule.
5 . The method of claim 1 , wherein—the fight incident occurs under at least one of: the fight incident occurs outside the FOV of the security camera, while the gathering of individuals are within, or at least partially within, the FOV of the security camera; and the fight incident occurs within the FOV of the security camera, the fight incident being obstructed by the gathering of individuals within the FOV of the security camera.
6 . The method of claim 1 , wherein determining the presence of the plurality of cell phones associated with the gathering of individuals, further comprises analyzing via the analytics engine, parameters associated with the plurality of cell phones, comprising: determining a total number of individuals at the gathering within the FOV of the security camera; determining a total number of individuals at the gathering holding a cell phone within the FOV of the security camera; determining a percentage of cell phone owners at the gathering, based on number of cell phone owners and total number of individuals at the gathering within the FOV of the security camera; comparing the percentage of cell phone owners to a predetermined cell phone owner threshold stored in the memory; and in response to the percentage of cell phone users exceeding the cell phone owner threshold, then monitoring the position and changes in position of each cell phone relative to a respective cell phone owner.
7 . The method of claim 1 , wherein monitoring position and changes in position of each cell phone relative to the respective cell phone owner, comprises: determining position and change in position of each cell phone over time within the FOV of the security camera; and determining position and change in position of each cell phone relative to a cell phone owner's head within the FOV of the security camera.
8 . The method of claim 1 , further comprising: providing verification to the identified fight incident based on trends.
9 . The method of claim 8 , wherein providing the verification to the identified fight incident based on trends comprises: detecting, via the processing and analytics engine, trends in position and movement of the cell phones at the identified fight incident, and comparing the detected trends in position and movement to previously stored trends of previously confirmed fight incidents stored in the memory.
10 . The method of claim 9 , wherein providing the verification to the identified fight incident further comprises: detecting trends associated with the breaches at the identified fight incident; comparing the detected trends associated with the breaches to previously stored trends associated with previously confirmed fight incidents stored in the memory; determining, based on the comparison, that the identified fight incident aligns with at least one stored trend of the previously confirmed fight incidents; and supplementing the alert with a verification notification indicating alignment of the identified fight incident with the at least one stored trend.
11 . The method of claim 9 , wherein detecting trends in position and movement of the cell phones, comprises: determining, via the processing and analytics engine, trends in relative scale of movement of the cell phones entering and exiting the FOV; determining, via the processing and analytics engine, trends in a ratio of number of cell phones present to number of viewable cell phone owners within the FOV determining, via the processing and analytics engine, trends in movement of the detected cell phones to an overhead position; and determining, via the processing and analytics engine, trends in velocity of the detected cell phones to the overhead position.
12 . The method of claim 1 , wherein monitoring the method is performed without use of eye gaze analytics.
13 . A communication system, comprising: a security camera; a processor operatively coupled to the security camera; an analytics engine operatively coupled to the processor; a memory operatively coupled to the processor and analytics engine, the processor and analytics engine being configured to: receive image inputs from the security camera; detect, within the received image inputs, a gathering of individuals within a field of view (FOV) of the security camera; determine a presence of a plurality of cell phones associated with the gathering of individuals; monitor position and changes in position of each cell phone relative to a respective cell phone owner; compare the position and change of position to predetermined cell phone positioning thresholds stored in a memory associated with the processing and analytics engine; identify a fight incident in response to breaches of the predetermined cell phone positioning thresholds; and. generate and send an alert indicative of the fight incident to a security radio associated with the communication system.
14 . The communication system of claim 13 , wherein monitoring further comprises: measuring, via the processor and analytics engine, parameters associated with the gathering of individuals and cell phones within the FOV of the security camera; and aggregating the measured parameters to identify the fight incident.
15 . The communication system of claim 13 , wherein—the identified fight incident occurs under at least one of: the fight incident occurring outside the FOV of the security camera, while the gathering of individuals are within, or at least partially within, the FOV of the security camera; and the fight incident occurring within the FOV of the security camera, wherein the fight incident is obstructed by the gathering of individuals within the FOV of the security camera.
16 . The communication system of claim 13 , wherein the processor and analytics engine are further configured to: provide verification to the identified fight incident.
17 . The communication system of claim 16 , wherein the verification to the identified fight incident is based on: a detection of trends in position and movement of the cell phones at the identified fight incident by the processor and analytics engine; a comparison of the detected trends in position and movement to previously stored trends of previously confirmed fight incidents stored in the memory; and alignment of at least one of the detected trends with at least one stored trend of the previously confirmed fight incidents.
18 . The communication system of claim 16 , wherein the verification to the identified fight incident further comprises the processor and analytics engine being configured to: detect trends associated with the breaches at the incident; compare the detected trends associated with the breaches to previously stored trends associated with previously confirmed fight incidents stored in the memory; determine, based on the comparison, that the identified fight incident aligns with at least one stored trend of the previously confirmed fight incidents; and supplement the alert with a verification notification indicating alignment of the identified fight incident with the at least one stored trend.
19 . The communication system of claim 13 , wherein the position and changes in position of each cell phone relative to the respective cell phone owner is performed without eye gaze analytics.

Description

BACKGROUND Violence and conflict have been on the rise in communities, and more particularly in schools. Systems which promote safer schools are of high interest and often include the use of security cameras. However, even with the use of security cameras, fight detection in a school environment can be challenging, as the presence of individuals located in the vicinity of the fight may hinder the camera's ability to identify a fight incident. BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS In the accompanying figures similar or the same reference numerals may be repeated to indicate corresponding or analogous elements. These figures, together with the detailed description, below are incorporated in and form part of the specification and serve to further illustrate various embodiments of concepts that include the claimed invention, and to explain various principles and advantages of those embodiments. FIG. 1 is a block diagram of a communication system formed and operating in accordance with some embodiments. FIG. 2A, 2B, 2C shows a few non-limiting examples of cell phone position, cell phone movement, and cell phone velocity detectable by the communication system of FIG. 1, in accordance with some embodiments. FIG. 3 is a flowchart of a method for detecting a fight incident in accordance with some embodiments. FIG. 4 provides an example workflow for generation of aggregated results for additional verification of a fight incident in accordance with some embodiments Skilled artisans will appreciate that elements in the figures are illustrated for simplicity and clarity and have not necessarily been drawn to scale. For example, the dimensions of some of the elements in the figures may be exaggerated relative to other elements to help improve understanding of embodiments of the present disclosure. The system, apparatus, and method components have been represented where appropriate by conventional symbols in the drawings, showing only those specific details that are pertinent to understanding the embodiments of the present disclosure so as not to obscure the disclosure with details that will be readily apparent to those of ordinary skill in the art having the benefit of the description herein. DETAILED DESCRIPTION OF THE INVENTION Detecting and responding to fight incidents quickly is crucial to preventing escalation of the fight and ensuring that authorities can address the situation as quickly as possible. Although security cameras may be in place, a fight may very quickly attract a large crowd of spectators, such as spectator students in a school environment. The large crowd of spectators surrounding the fight often blocks the field of view (FOV) of the security camera making it difficult to identify a fight incident within the crowd. As another example, a fight incident may occur outside of the FOV of the camera, while spectators to the fight remain at least partially within the FOV of the camera. As the crowd increases and/or moves around, the problem of identifying the fight is exacerbated. An additional challenge is that not all gatherings of spectators, for example spectator students in a school, result from a fight incident. In a school environment, there may be other reasons for a crowd of spectators to gather, such as school sports activities, change of classrooms in crowded hallways to name a few. Current security systems do not adequately address these challenges. Improved fight detection is crucial in preventing the escalation of violence at an incident. Improved fight detection will facilitate the ability of authorities to address the fight incident as quickly as possible. Thus, there exists a need for an improved technical method, device, and system for detecting a fight. In accordance with one example embodiments, a method of detecting a fight is provided by: detecting, via a processing and analytics engine associated with a security camera of a communication system, that a gathering of individuals is within a field of view (FOV) of the security camera; determining a presence of a plurality of cell phones associated with the gathering of individuals; monitoring position and changes in position of each cell phone of the plurality of cell phones associated with the gathering relative to a respective cell phone owner; comparing the position and change of position to predetermined cell phone positioning thresholds stored in a memory associated with the processing and analytics engine; identifying a fight incident in response to breaches of the predetermined cell phone positioning thresholds; and generating and sending an alert indicative of the fight incident to a security radio associated with the communication system. In accordance with another example embodiment, a communication system is provided, the communication system comprising a security camera; a processor operatively coupled to the security camera; an analytics engine operatively coupled to the processor; a memory operatively coup