# US 2019/0172329 A1 · Security system and method > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0172329 A1 - Document ID: US20190172329A1 - Status: Published application - Kind: A1 - Application number: 16/253,313 - Filed: 2019-01-22 - Published: 2019-06-06 - Earliest claimed: 2016-07-22 - Assignees: Lucis Technologies Holdings Limited; Lucis Technologies (Shanghai) Co., Ltd. - Applicants: Lucis Technologies Holdings Limited; Lucis Technologies (Shanghai) Co., Ltd. - Inventors: Defeng SHI - Web page: https://patentgrep.com/patent/US20190172329A1 ## CPC - G08B 13/19602: {Image analysis to detect motion of the intruder, e.g. by frame subtraction} - G01V 8/005: {operating with millimetre waves, e.g. measuring the black losey radiation} - G06T 7/13: Edge detection - G08B 13/00: Burglar, theft or intruder alarms - G08B 21/182: {Level alarms, e.g. alarms responsive to variables exceeding a threshold} - G08B 25/08: using communication transmission lines {(G08B13/19658, G08B21/0286, G08B25/016 take precedence)} - G08B 29/188: {Data fusion; cooperative systems, e.g. voting among different detectors} - H04N 7/183: {for receiving images from a single remote source} - G01V 3/12: operating with electromagnetic waves {(operating with millimetre waves G01V8/005)} - G06T 2207/30196: Human being; Person - G06T 2207/30232: Surveillance - G08B: SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS - G01V: GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS (means for indicating the location of accidentally buried, e.g. snow-buried, persons A63B29/02) - G06T: IMAGE DATA PROCESSING OR GENERATION, IN GENERAL - H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION ## Abstract The present disclosure discloses a system including a detection module configured to receive a microwave signal from a moving object located in an environment and obtain at least one optical image including the moving object; and a processor configured to determine frequency information associated with the environment according to the a microwave signal, determine a contour of the moving object according to the at least one optical image, and determine a security level according to at least a portion of the frequency information and the contour of the moving object. ## Claims ### Claim 1 A system comprising: a detection module configured to: receive a microwave signal from a moving object located in an environment; and obtain at least one optical image including the moving object; and a processor configured to: determine frequency information associated with the environment according to the microwave signal, determine a contour of the moving object according to the at least one optical image, and determine a security level according to at least a portion of the frequency information and the contour of the moving object. ### Claim 2 (depends on 1) The system of claim 1, wherein the detection module includes an image sensor or an infrared sensor. ### Claim 3 (depends on 2) The system of claim 2, wherein the image sensor is associated with one or more lenses. ### Claim 4 (depends on 2) The system of claim 2, wherein the infrared sensor includes an infrared thermal imager. ### Claim 5 (depends on 1) The system of claim 1, wherein the frequency information includes a fixed frequency associated with the moving object. ### Claim 6 (depends on 1) The system of claim 1, wherein the frequency information is obtained by the processor by performing a Fourier transformation on the microwave signal. ### Claim 7 (depends on 1) The system of claim 1, wherein the contour of the moving object is obtained by the processor by applying an image processing approach to the at least one optical image. ### Claim 8 (depends on 7) The system of claim 7, wherein the image processing approach includes at least one of an inter-frame difference approach, a background difference approach, an optical flow approach, an edge detection approach, or a mixed Gaussian model approach. ### Claim 9 (depends on 1) The system of claim 1, wherein the processor is further configured to determine whether the moving object is a human according to an aspect ratio of the contour of the moving object. ### Claim 10 (depends on 1) The system of claim 1, further comprises an alarm configured to generate an alarm signal when the security level is below a predetermined threshold. ### Claim 11 A method, comprising: receiving a microwave signal from a moving object located in an environment; obtaining at least one optical image including the moving object; determining, by a processor, frequency information associated with the environment according to the microwave signal; determining a contour of the moving object according to the at least one optical image; and determining a security level according to at least a portion of the frequency information and the contour of the moving object. ### Claim 12 (depends on 11) The method of claim 11, wherein the optical image is obtained by an image sensor or an infrared sensor. ### Claim 13 (depends on 12) The method of claim 12, wherein the image sensor is associated with one or more lenses. ### Claim 14 (depends on 12) The method of claim 12, wherein the infrared sensor includes an infrared thermal imager. ### Claim 15 (depends on 11) The method of claim 11, wherein the frequency information includes a fixed frequency associated with the moving object. ### Claim 16 (depends on 11) The method of claim 11, wherein the frequency information is obtained by performing a Fourier transformation on the microwave signal. ### Claim 17 (depends on 11) The method of claim 11, wherein the determining a contour of the moving object comprises: processing the at least one optical image using at least one of an inter-frame difference approach, a background difference approach, an optical flow approach, an edge detection approach, or a mixed Gaussian model approach. ### Claim 18 (depends on 11) The method of claim 11, further comprising: determining whether the moving object is a human by computing an aspect ratio of the contour of the moving object. ### Claim 19 (depends on 11) The method of claim 11, further comprising: setting off an alarm, according to an alarm manner, when the security level is below a predetermined threshold. ### Claim 20 A non-transitory computer readable storage medium storing executable instructions that cause a computing device to execute operations including: receiving a microwave signal from a moving object located in an environment; obtaining at least one optical image including the moving object; determining frequency information associated with the environment according to the microwave signal; determining a contour of the moving object according to the at least one optical image; and determining a security level according to at least a portion of the frequency information and the contour of the moving object.