# US 2019/0171201 A1 · Target-based image exposure adjustment > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0171201 A1 - Document ID: US20190171201A1 - Status: Published application - Kind: A1 - Application number: 16/255,159 - Filed: 2019-01-23 - Published: 2019-06-06 - Earliest claimed: 2016-07-28 - Assignees: Sz Dji Technology Co., Ltd. - Applicants: Sz Dji Technology Co., Ltd. - Inventors: Ye TAO; Cong ZHAO; Xuyang FENG; Ruochen TANG - Web page: https://patentgrep.com/patent/US20190171201A1 ## CPC - H04N 23/611: where the recognised objects include parts of the human body - G05D 1/0038: {by providing the operator with simple or augmented images from one or more cameras located onboard the vehicle, e.g. tele-operation (images analyzed by a computer and used for automatic navigation G05D1/0246)} - G05D 1/0094: {involving pointing a payload, e.g. camera, weapon, sensor, towards a fixed or moving target} - G05D 1/12: Target-seeking control - G08G 5/55: for a single aircraft - G08G 5/57: for unmanned aircraft - H04N 23/63: by using electronic viewfinders - H04N 23/71: Circuitry for evaluating the brightness variation - H04N 23/72: Combination of two or more compensation controls - B64U 10/14: with four distinct rotor axes, e.g. quadcopters - B64U 30/20: Rotors; Rotor supports - B64U 2101/30: for imaging, photography or videography - B64U 2101/60: for transporting passengers; for transporting goods other than weapons - B64U 2201/20: Remote controls - H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION - G05D: SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES - G08G: TRAFFIC CONTROL SYSTEMS (guiding railway traffic, ensuring the safety of railway traffic B61L; arrangement of road signs or traffic signals E01F9/00; radar or analogous systems, sonar systems, lidar systems specially adapted for traffic control G01S13/91, G01S15/88, G01S17/88; {radar or analogous systems, sonar systems, lidar systems specially adapted for anti-collision purposes G01S13/93, G01S15/93, G01S17/93}) - B64U: UNMANNED AERIAL VEHICLES [UAV]; EQUIPMENT THEREFOR ## Abstract A method for adjusting image exposure includes, while continuously tracking one or more targets using an imaging device mounted on a movable object, receiving a user indication of a target for imaging, determining a first representation of the target, capturing a first image that includes the first representation of the target, determining an exposure parameter for the imaging device using data in the first image that corresponds to the first representation of the target, determining a second representation of the target, capturing a second image including the second representation of the target, and adjusting the exposure parameter for the imaging device using data in the second image that corresponds to the second representation of the target. ## Claims ### Claim 1 A method for adjusting image exposure, the method comprising: while continuously tracking one or more targets using an imaging device mounted on a movable object: receiving a user indication of a target for imaging; determining, by the imaging device, a first representation of the target; capturing, by the imaging device, a first image that includes the first representation of the target; determining an exposure parameter for the imaging device using data in the first image that corresponds to the first representation of the target; determining, by the imaging device, a second representation of the target; capturing, by the imaging device, a second image including the second representation of the target; and adjusting the exposure parameter for the imaging device using data in the second image that corresponds to the second representation of the target. ### Claim 2 (depends on 1) The method of claim 1, further comprising: acquiring, by one or more sensors, a measurement of a distance to the target; wherein the second representation of the target within the second image is determined using the measurement of the distance to the target. ### Claim 3 (depends on 1) The method of claim 1, further comprising: determining target movement data in accordance with the first representation of the target within the first image and the second representation of the target within the second image, adjusting the exposure parameter for the imaging device comprising adjusting the exposure parameter for the imaging device using the determined target movement data; and adjusting the exposure parameter for the imaging device again using the determined target movement data. ### Claim 4 (depends on 1) The method of claim 1, wherein: the data that corresponds to the second representation of the target in the second image comprises a plurality of light levels determined for distinct points of the second representation of the target; and adjusting the exposure parameter comprises: determining an average value based on the plurality of light levels; and adjusting the exposure parameter in accordance with the determined average value. ### Claim 5 (depends on 1) The method of claim 1, wherein adjusting the exposure parameter comprises adjusting the exposure parameter using data that corresponds to at least one portion of the second image that is outside a region that corresponds to the second representation of the target. ### Claim 6 (depends on 5) The method of claim 5, wherein adjusting the exposure parameter comprises weighting the data that corresponds to the second representation of the target in the second image more highly than the data that corresponds to the at least one portion of the second image that is outside the region that corresponds to the second representation of the target. ### Claim 7 (depends on 1) The method of claim 1, wherein receiving the user indication of the target for imaging comprises receiving input data indicating a region that corresponds to the target within a prior image captured by the imaging device. ### Claim 8 (depends on 1) The method of claim 1, further comprising: transmitting, to a remote device, an indication of a region that corresponds to the target. ### Claim 9 An unmanned aerial vehicle (UAV), comprising: a propulsion system; an imaging device; and one or more processors coupled to the propulsion system and the imaging device; and configured for, while continuously tracking one or more targets using the imaging device of the UAV: receiving a user indication of a target for imaging; determining, through the imaging device, a first representation of the target; capturing, through the imaging device, a first image that includes the first representation of the target; determining an exposure parameter for the imaging device using data in the first image that corresponds to the first representation of the target; determining, through the imaging device, a second representation of the target; capturing, through the imaging device, a second image including the second representation of the target; and adjusting the exposure parameter for the imaging device using data in the second image that corresponds to the second representation of the target. ### Claim 10 (depends on 9) The UAV of claim 9, wherein: the one or more processors are further configured for acquiring, through one or more sensors, a measurement of a distance to the target; and the second representation of the target within the second image is determined using the measurement of the distance to the target. ### Claim 11 (depends on 9) The UAV of claim 9, wherein the one or more processors are further configured for: determining target movement data in accordance with the first representation of the target within the first image and the second representation of the target within the second image; adjusting the exposure parameter for the imaging device using the determined target movement data; and adjusting the exposure parameter for the imaging device again using the determined target movement data. ### Claim 12 (depends on 9) The UAV of claim 9, wherein: the data that corresponds to the second representation of the target in the second image comprises a plurality of light levels determined for distinct points of the second representation of the target; and adjusting the exposure parameter comprises: determining an average value based on the plurality of light levels; and adjusting the exposure parameter in accordance with the determined average value. ### Claim 13 (depends on 9) The UAV of claim 9, wherein the one or more processors are further configured for adjusting the exposure parameter using data that corresponds to at least one portion of the second image that is outside a region that corresponds to the second representation of the target. ### Claim 14 (depends on 13) The UAV of claim 13, wherein adjusting the exposure parameter comprises weighting the data that corresponds to the second representation of the target in the second image more highly than the data that corresponds to the at least one portion of the second image that is outside the region that corresponds to the second representation of the target. ### Claim 15 (depends on 9) The UAV of claim 9, wherein receiving the user indication of the target for imaging comprises receiving input data indicating a region that corresponds to the target within a prior image captured by the imaging device. ### Claim 16 (depends on 9) The UAV of claim 9, wherein the one or more processors are further configured for transmitting, to a remote device, an indication of a region that corresponds to the target. ### Claim 17 A system for adjusting image exposure, the system comprising: an imaging device; and one or more processors coupled to the imaging device and configured for, while continuously tracking one or more targets using the imaging device: receiving a user indication of a target for imaging; determining, through the imaging device, a first representation of the target; capturing, through the imaging device, a first image that includes the first representation of the target; determining an exposure parameter for the imaging device using data in the first image that corresponds to the first representation of the target; determining, through the imaging device, a second representation of the target; capturing, through the imaging device, a second image including the second representation of the target; and adjusting the exposure parameter for the imaging device using data in the second image that corresponds to the second representation of the target. ### Claim 18 (depends on 17) The system of claim 17, wherein: the one or more processors are further configured for acquiring, by one or more sensors, a measurement of a distance to the target; and the second representation of the target within the second image is determined using the measurement of the distance to the target. ### Claim 19 (depends on 17) The system of claim 17, wherein the one or more processors are further configured for: determining target movement data in accordance with the first representation of the target within the first image and the second representation of the target within the second image; adjusting the exposure parameter for the imaging device using the determined target movement data; and adjusting the exposure parameter for the imaging device again using the determined target movement data. ### Claim 20 (depends on 17) The system of claim 17, wherein: the data that corresponds to the second representation of the target in the second image comprises a plurality of light levels determined for distinct points of the second representation of the target; and adjusting the exposure parameter comprises: determining an average value based on the plurality of light levels; and adjusting the exposure parameter in accordance with the determined average value. ### Claim 21 (depends on 17) The system of claim 17, wherein the one or more processors are further configured for adjusting the exposure parameter using data that corresponds to at least one portion of the second image that is outside a region that corresponds to the second representation of the target, the data that corresponds to the second representation of the target in the second image being weighted more highly than the data that corresponds to the at least one portion of the second image that is outside the region that corresponds to the second representation of the target. ### Claim 22 (depends on 17) The system of claim 17, wherein receiving the user indication of the target for imaging comprises receiving input data indicating a region that corresponds to the target within a prior image captured by the imaging device.