System and method for detecting objects
AssigneeZkteco USA LLC
InventorsManish Dalal, Chongliang Zhong
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Abstract
The present teaching relates to method, system, medium, and implementations for detecting an electronic target object. A magnetic field is first generated. Magnetic field variations associated with presence of an object nearby the magnetic field are observed and analyzed to extract features characterizing the magnetic field variations. Based on such extracted features, it is determined as to whether the object corresponds to an electronic target object. If so, an alarm is triggered to indicate the detection of the electronic target object.
Claims17
A method implemented on at least one machine including at least one processor and a communication platform capable of connecting to a network for detecting an electronic target object, the method comprising:
- generating a magnetic field;
- sensing magnetic field variations associated with presence of an object nearby the magnetic field;
- extracting features characterizing the magnetic field variations;
- checking whether the magnetic field variations meet certain criteria based on the extracted features in accordance with one or more models characterizing expected magnetic field variations caused by presence of the electronic target object;
- assessing whether the object is the electronic target object based on the checking;
- and
- triggering, if the electronic target object is detected, an alarm in response to the detection.
Machine readable medium having information recorded thereon for detecting an electronic target object, the information, when read by the machine, causes the machine to perform:
- generating a magnetic field;
- sensing magnetic field variations associated with presence of an object nearby the magnetic field;
- extracting features characterizing the magnetic field variations;
- checking whether the magnetic field variations meet certain criteria based on the extracted features in accordance with one or more models characterizing expected magnetic field variations caused by presence of the electronic target object;
- assessing whether the object is the electronic target object based on the checking;
- and
- triggering, if the electronic target object is detected, an alarm in response to the detection.
An apparatus for detecting an electronic target object comprising:
- a magnetic field generation unit configured for generating a magnetic field;
- one or more sensors configured for sensing magnetic field variations associated with presence of an object nearby the magnetic field;
- a signal processing unit configured for
- extracting features characterizing the magnetic field variations,
- checking whether the magnetic field variations meet cone or more criteria based on the extracted features in accordance with one or more models characterizing expected magnetic field variations caused by presence of the electronic target object, and
- assessing whether the object is the electronic target object based on the checking;
- and
- an alarming triggering unit configured for triggering, if the electronic target object is detected, an alarm in response to the detection.
Dependencies are inferred from the claim text.