# US 2018/0025599 A1 · Determining sensor installation characteristics from camera image > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2018/0025599 A1 - Document ID: US20180025599A1 - Status: Published application - Kind: A1 - Application number: 15/216,964 - Filed: 2016-07-22 - Published: 2018-01-25 - Earliest claimed: 2016-07-22 - Assignees: Google Inc. - Applicants: Google Inc. - Inventors: Kenneth Louis Herman; Aveek Ravishekhar Purohit; Bryan James; Mark Rajan Malhotra; Yash Modi - Web page: https://patentgrep.com/patent/US20180025599A1 ## CPC - G06T 7/50: Depth or shape recovery - G08B 13/19602: {Image analysis to detect motion of the intruder, e.g. by frame subtraction} - G08B 13/19636: {pertaining to the camera} - G06T 2207/10048: Infrared image - G06T 2207/30232: Surveillance - G08B 29/22: Provisions facilitating manual calibration, e.g. input or output provisions for testing; Holding of intermittent values to permit measurement - G06T: IMAGE DATA PROCESSING OR GENERATION, IN GENERAL - G08B: SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS ## Abstract An image of at least a portion of a room may be received, the image of the room comprising an image of a sensor mounted in the room. At least one optical parameter related to the image of the room may also be received. A distance may be determined between the sensor and a camera that captured the image of the room, wherein the determination of the distance is based at least in part on the optical parameters and on known physical dimensions of the sensor. A sensitivity requirement of the sensor may be determined, based on the distance. The determined sensitivity may be sent to control logic of the sensor. ## Claims ### Claim 1 A computer-implemented method comprising: receiving an image of at least a portion of a room, the image of the room comprising an image of a sensor mounted in the room; receiving at least one optical parameter related to the image of the room; determining a distance between the sensor and a camera that captured the image of the room, wherein the determination of the distance is based at least in part on the image of the room, on the optical parameters, and on known physical dimensions of the sensor; determining a sensitivity requirement of the sensor, based on the distance; and sending the determined sensitivity requirement to control logic of the sensor. ### Claim 2 (depends on 1) The method of claim 1, further comprising: configuring the sensor to operate at the determined sensitivity requirement. ### Claim 3 (depends on 2) The method of claim 2, wherein the sensor comprises a motion detector. ### Claim 4 (depends on 1) The method of claim 1, further comprising: using the image, determining a height of the sensor above a floor of the room, wherein the determination of the height is based at least in part on the optical parameters and on the known physical dimensions of the sensor. ### Claim 5 (depends on 4) The method of claim 4, further comprising: determining if the height of the sensor is within an appropriate range of heights; and if not, outputting an alert signal. ### Claim 6 (depends on 5) The method of claim 5, wherein the alert signal results in a communication through a user interface, the communication suggesting relocation of the sensor. ### Claim 7 (depends on 1) The method of claim 1, further comprising: using the image, determining a separation between the sensor and a source of infrared radiation (IR) in the room, wherein the determination of the separation is based at least in part on the optical parameters and on the known physical dimensions of the sensor. ### Claim 8 (depends on 7) The method of claim 7, further comprising: determining if the separation is greater than a predefined threshold; and if not, outputting an alert signal. ### Claim 9 (depends on 8) The method of claim 8, wherein the alert signal results in a communication through a user interface, the communication suggesting relocation of the sensor. ### Claim 10 (depends on 7) The method of claim 7, wherein the source of IR comprises one of: a window; a door; a heating, ventilation, or air conditioning (HVAC) vent; or an appliance. ### Claim 11 A system comprising: a processor; and a memory in communication with the processor, wherein the memory stores instructions that, when executed by the processor, cause the processor to: receive an image of at least a portion of a room, the image of the room comprising an image of a sensor mounted in the room; receive at least one optical parameter related to the image of the room; determine a distance between the sensor and a camera that captured the image of the room, wherein the determination of the distance is based at least in part on the image of the room, on the optical parameters, and on known physical dimensions of the sensor; determine a sensitivity requirement of the sensor, based on the distance; and send the determined sensitivity requirement to control logic of the sensor. ### Claim 12 (depends on 11) The system of claim 11, wherein the instructions further cause the processor to: configure the sensor to operate at the determined sensitivity requirement. ### Claim 13 (depends on 12) The system of claim 12, wherein the sensor comprises a motion detector. ### Claim 14 (depends on 11) The system of claim 11, wherein the instructions further cause the processor to: using the image, determine a height of the sensor above a floor of the room, wherein the determination of the height is based at least in part on the optical parameters and on the known physical dimensions of the sensor. ### Claim 15 (depends on 14) The system of claim 14, wherein the instructions further cause the processor to: determine if the height of the sensor is within an appropriate range of heights; and if not, outputting an alert signal. ### Claim 16 (depends on 15) The system of claim 15, wherein the alert signal results in a communication through a user interface, the communication suggesting relocation of the sensor. ### Claim 17 (depends on 11) The system of claim 11, wherein the instructions further cause the processor to: using the image, determine a separation between the sensor and a source of infrared radiation (IR) in the room, wherein the determination of the separation is based at least in part on the optical parameters and on the known physical dimensions of the sensor. ### Claim 18 (depends on 17) The system of claim 17, wherein the instructions further cause the processor to: determine if the separation is greater than a predefined threshold; and if not, outputting an alert signal. ### Claim 19 (depends on 18) The system of claim 18, wherein the alert signal results in a communication through a user interface, the communication suggesting relocation of the sensor. ### Claim 20 (depends on 17) The system of claim 17, wherein the source of IR comprises one of: a window; a door; a heating, ventilation, or air conditioning (HVAC) vent; or an appliance.