State and position prediction of observed vehicles using optical tracking of wheel rotation

    公开(公告)号:US10706563B2

    公开(公告)日:2020-07-07

    申请号:US15980300

    申请日:2018-05-15

    Abstract: Various embodiments may include methods of using image data to estimate motion of a vehicle observed within camera images, such as images captured by a vehicle navigation system of a host vehicle. Various embodiments may include a camera capturing a sequence of images including the observed vehicle, and a processor performing image processing to identify a wheel of the observed vehicle, and determining a rate of rotation of the wheel based on changes in orientation of the wheel between at least two images within the sequence of images. The processor may further determine a speed of the observed vehicle based on the wheel's rate of rotation and diameter. The processor may further determine a direction of travel and/or turning rate of the observed vehicle by determining relative angles of wheels of the observed vehicle in at least one image.

    State and Position Prediction of Observed Vehicles Using Optical Tracking of Wheel Rotation

    公开(公告)号:US20190355132A1

    公开(公告)日:2019-11-21

    申请号:US15980300

    申请日:2018-05-15

    Abstract: Various embodiments may include methods of using image data to estimate motion of a vehicle observed within camera images, such as images captured by a vehicle navigation system of a host vehicle. Various embodiments may include a camera capturing a sequence of images including the observed vehicle, and a processor performing image processing to identify a wheel of the observed vehicle, and determining a rate of rotation of the wheel based on changes in orientation of the wheel between at least two images within the sequence of images. The processor may further determine a speed of the observed vehicle based on the wheel's rate of rotation and diameter. The processor may further determine a direction of travel and/or turning rate of the observed vehicle by determining relative angles of wheels of the observed vehicle in at least one image.

    Collaborative vehicle headlight directing

    公开(公告)号:US11325524B2

    公开(公告)日:2022-05-10

    申请号:US16742229

    申请日:2020-01-14

    Abstract: Various embodiments include methods and vehicles, such as an autonomous vehicle, a semi-autonomous vehicle, etc., for collaboratively directing one or more headlights by two or more vehicles. Various aspects may include receiving, by a first vehicle processor, a first vehicle collaborative lighting message from a second vehicle, in which the first vehicle collaborative lighting message requests that the first vehicle direct one or more headlights of the first vehicle to illuminate a target area of uncertainty that is disposed, relative to the first vehicle, in a direction other than a direction of travel of the first vehicle. The first vehicle processor may direct one or more the headlights of the first vehicle to illuminate the target area in accordance with the first vehicle collaborative lighting message.

    Determining a Spin Direction of an Electric Motor

    公开(公告)号:US20170373621A1

    公开(公告)日:2017-12-28

    申请号:US15192448

    申请日:2016-06-24

    Abstract: Embodiments include devices and methods for determining a spin direction of a motor of an unmanned aerial vehicle (UAV). A processor of the UAV may apply a first power to spin the motor in a first direction. The processor may select the first direction in response to determining that a detected rotational frequency-per-applied power in the first direction matches the expected rotational frequency-per-applied power. The processor may select the first direction in response to determining that a detected vertical motion is positive when the first power is applied in the first direction. The processor may also apply a second power to spin the motor in a second direction. The processor may determine whether a detected rotational frequency-per-applied power in the second direction matches the expected rotational frequency-per-applied power. The processor may determine whether a detected vertical motion is positive when the second power is applied in the second direction.

    Collaborative Vehicle Headlight Directing

    公开(公告)号:US20210213873A1

    公开(公告)日:2021-07-15

    申请号:US17003064

    申请日:2020-08-26

    Abstract: Various embodiments include methods and vehicles, such as an autonomous vehicle, a semi-autonomous vehicle, etc., for collaboratively directing or configuring one or more headlights of a vehicle to avoid visually interfering with operation of an oncoming vehicle. Various embodiments may include receiving, by a first vehicle processor, a first collaborative lighting message from a second vehicle, wherein the first collaborative lighting message requests that the first vehicle direct one or more headlights of the first vehicle to avoid visual interference with operation of the second vehicle and directing one or more the headlights of the first vehicle in accordance with the collaborative lighting plan. Directing the headlights to avoid visual interference with operation of the second vehicle may include switching the headlights to a low-beam configuration.

    Controlling A Robotic Vehicle Following Flight Controller Signal Loss

    公开(公告)号:US20200041998A1

    公开(公告)日:2020-02-06

    申请号:US16053117

    申请日:2018-08-02

    Abstract: Various embodiments include devices and methods for controlling a robotic vehicle. Each electronic speed controller (ESC) of the robotic vehicle may receive open loop flight control information from a flight controller or another processing device of the robotic vehicle. In some embodiments, each ESC may store the provided open loop flight control information in a memory. In response to detecting a loss of control signals from the flight controller, each ESC may access the stored open loop flight control information and perform control of a motor associated with each ESC based on the open loop flight control information. The open loop flight control information may be a sequence of motor control instructions to be performed over a period of time, or parameterized information or vehicle state information that enables each ESC to generate a sequence of motor control instructions.

    Collaborative vehicle headlight directing

    公开(公告)号:US11241996B2

    公开(公告)日:2022-02-08

    申请号:US16742197

    申请日:2020-01-14

    Abstract: Various embodiments include methods and vehicles, such as an autonomous vehicle, a semi-autonomous vehicle, etc., for collaboratively directing one or more headlights by two or more vehicles. Various aspects may include receiving, by a first vehicle processor, a first collaborative lighting message from a second vehicle, in which the first collaborative lighting message may request the first vehicle direct one or more headlights of the first vehicle, in collaboration with the second vehicle directing one or more headlights of the second vehicle according to a collaborative lighting plan, and directing, by the first vehicle processor, one or more of the headlights of the first vehicle in accordance with the collaborative lighting plan.

    Collaborative Vehicle Headlight Directing

    公开(公告)号:US20210213869A1

    公开(公告)日:2021-07-15

    申请号:US16742197

    申请日:2020-01-14

    Abstract: Various embodiments include methods and vehicles, such as an autonomous vehicle, a semi-autonomous vehicle, etc., for collaboratively directing one or more headlights by two or more vehicles. Various aspects may include receiving, by a first vehicle processor, a first collaborative lighting message from a second vehicle, in which the first collaborative lighting message may request the first vehicle direct one or more headlights of the first vehicle, in collaboration with the second vehicle directing one or more headlights of the second vehicle according to a collaborative lighting plan, and directing, by the first vehicle processor, one or more of the headlights of the first vehicle in accordance with the collaborative lighting plan.

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