US 2026/0154965 A1Published application

Device and method for providing a security alert in response to an object crossing a security perimeter

AssigneeMotorola Solutions, Inc.

InventorsKIOK YUNG LEE, NGUK SING WONG, JOO YIH SEE, CHENG YAU LEE

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Abstract

A process of providing a security alert in response to an object crossing a security perimeter. In operation, an electronic computing device obtains and analyzes a video stream captured corresponding to a field of view of a camera covering a security perimeter of an area under surveillance. The device determines that a shadow detected in the video stream is cast by an object existing outside of the field of view of the camera. The device determines that the object is moving based on characteristics of the shadow detected in the video stream. The device determines whether the object has crossed the security perimeter based at least in part on the current position of the light source and one or more characteristics of the shadow detected in the video stream. The device provides a security alert in response to determining that the object has crossed the security perimeter.

Claims20

Dependent claims

A method for providing a security alert in response to an object crossing a security perimeter, the method comprising:

obtaining, at an electronic computing device, a video stream captured corresponding to a field of view of a camera, the field of view covering a security perimeter of an area under surveillance;
detecting, at the electronics computing device;
a shadow in the video stream based on analyzing the video stream using a video analytics engine;
determining, at the electronic computing device, that the shadow is cast by an object existing outside of the field of view of the camera;
determining, at the electronic computing device, that the object existing outside of the field of view of the camera is moving based on one or more characteristics of the shadow detected in the video stream;
identifying, at the electronic computing device, a current position of a light source responsible for casting the shadow;
determining, at the electronic computing device, whether the object has crossed the security perimeter based at least in part on the current position of the light source and the one or more characteristics of the shadow detected in the video stream;
and
providing, at the electronic computing device, a security alert in response to determining that the object existing outside of the field of view of the camera has crossed the security perimeter.

6 more elements

An electronic computing device comprises:

a communications interface;
and
an electronic processor communicatively coupled to the communications interface, the electronic processor configured to:
obtain, via the communications interface, a video stream captured corresponding to a field of view of a camera, the field of view covering a security perimeter of an area under surveillance;
detect a shadow in the video stream based on analyzing the video stream using a video analytics engine;
determine that the shadow is cast by an object existing outside of the field of view of the camera;
determine that the object existing outside of the field of view of the camera is moving based on one or more characteristics of the shadow detected in the video stream;
identify a current position of a light source responsible for casting the shadow;
determine whether the object has crossed the security perimeter based at least in part on the current position of the light source and the one or more characteristics of the shadow detected in the video stream;
and
provide a security alert in response to determining that the object existing outside of the field of view of the camera has crossed the security perimeter.

8 more elements

Dependencies are inferred from the claim text.