ELECTRONIC DEVICE AND METHOD FOR RECOGNIZING AND TRACKING SUSPECTS
First Claim
1. A method for recognizing and tracking suspects using an electronic device, the electronic device being electronically connected to a controller, the controller being electronically connected to an infrared light-emitting diode (LED), a camera and one or more infrared illuminators installed in a monitored area, the method comprising:
- receiving images of the monitored area captured by the camera at different times via the controller;
selecting a person in the images as a tracking target;
determining a movement direction and a movement distance of the tracking target in the monitored area according to position information of the tracking target in the images;
generating a control command according to the movement direction and the movement distance of the tracking target, and sending the control command to the controller, to control the camera to move along the movement direction by the movement distance, so that the tracking target keeps in a viewable range of the camera;
controlling the infrared LED to emit infrared rays, determining intensity variation of infrared rays that penetrate the tracking target, generating a pulse signal based on the intensity variation, and sending the pulse signal to the controller; and
determining the tracking target as a suspect and keeping track of the suspect, in response that a frequency of a digital signal, which is converted from the pulse signal, falls out of a normal human heartbeat rate range.
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Accused Products
Abstract
An electronic device is connected to a controller. The controller is connected to an infrared light-emitting diode (LED), a camera and one or more infrared illuminators installed in a monitored area. The camera captures images of the monitored area. The electronic device selects a person appears in the images as a tracking target, determines movement information of the tracking target in the monitored area, and controls the camera to track the tracking target according to the movement information. The infrared LED emits infrared rays. The infrared illuminators determine intensity variation of the infrared rays that penetrated the tracking target, generate a pulse signal based on the intensity variation. The electronic device determines if a frequency of a digital signal, which is converted from the pulse signal, falls within a normal human heartbeat rate range, to determine if the tracking target is a suspect.
16 Citations
18 Claims
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1. A method for recognizing and tracking suspects using an electronic device, the electronic device being electronically connected to a controller, the controller being electronically connected to an infrared light-emitting diode (LED), a camera and one or more infrared illuminators installed in a monitored area, the method comprising:
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receiving images of the monitored area captured by the camera at different times via the controller; selecting a person in the images as a tracking target; determining a movement direction and a movement distance of the tracking target in the monitored area according to position information of the tracking target in the images; generating a control command according to the movement direction and the movement distance of the tracking target, and sending the control command to the controller, to control the camera to move along the movement direction by the movement distance, so that the tracking target keeps in a viewable range of the camera; controlling the infrared LED to emit infrared rays, determining intensity variation of infrared rays that penetrate the tracking target, generating a pulse signal based on the intensity variation, and sending the pulse signal to the controller; and determining the tracking target as a suspect and keeping track of the suspect, in response that a frequency of a digital signal, which is converted from the pulse signal, falls out of a normal human heartbeat rate range. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An electronic device, the electronic device being electronically connected to a controller, the controller being electronically connected to an infrared light-emitting diode (LED), a camera and one or more infrared illuminators installed in a monitored area, the electronic device comprising:
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a storage device; a processor; and one or more programs that are stored in the storage device and are executed by the at processor, the one or more programs comprising; a receiving module operable to receive images of the monitored area captured by the camera at different times via the controller; a selection module operable to select a person in the images as a tracking target; a target tracking module operable to determine a movement direction and a movement distance of the tracking target in the monitored area according to position information of the tracking target in different images, generate and send a control command to the controller, to control the camera to move along the movement direction by the movement distance, so that the tracking target keeps in a viewable range of the camera, and control the infrared LED to emit infrared rays, determine intensity variation of infrared rays that penetrate the tracking target, generate a pulse signal based on the intensity variation, and send the pulse signal to the controller; and a determination module operable to determine the tracking target as a suspect and keeping track of the suspect, in response that a frequency of a digital signal, which is converted from the pulse signal, falls out of a normal human heartbeat rate range. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A non-transitory computer readable medium storing a set of instructions, the set of instructions capable of being executed by a processor of an electronic device to perform for recognizing and tracking suspects using an electronic device, the electronic device being electronically connected to a controller, the controller being electronically connected to an infrared light-emitting diode (LED), a camera and one or more infrared illuminators installed in a monitored area, the method comprising:
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receiving images of the monitored area captured by the camera at different times via the controller; selecting a person in the images as a tracking target; determining a movement direction and a movement distance of the tracking target in the monitored area according to position information of the tracking target in different images; generating a control command according to the movement direction and the movement distance of the tracking target, and sending the control command to the controller, to control the camera to move along the movement direction by the movement distance, so that the tracking target keeps in a viewable range of the camera; controlling the infrared LED to emit infrared rays, determining intensity variation of the infrared rays that penetrate the tracking target, generating a pulse signal based on the intensity variation, and sending the pulse signal to the controller; and determining the tracking target as a suspect and keeping track of the suspect, in response that a frequency of a digital signal, which is converted from the pulse signal falls out of a normal human heartbeat rate range. - View Dependent Claims (14, 15, 16, 17, 18)
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Specification