Sensor calibration
    1.
    发明授权

    公开(公告)号:US11821754B2

    公开(公告)日:2023-11-21

    申请号:US17675725

    申请日:2022-02-18

    CPC classification number: G01C25/00 G01P21/00

    Abstract: Systems and techniques are described herein. For example, a process can include obtaining first sensor measurement data associated with a and second sensor measurement from one or more sensors. In some cases, the first measurement data can be associated with a first time and the second sensor measurement data can be associated with a second time occurring after the first time. In some aspects, the process includes determining that the first sensor measurement data and the second sensor measurement data satisfy at least one batching condition. In some examples, the process includes, based on determining that the first sensor measurement data and the second sensor measurement data satisfy the at least one batching condition, generating a sensor measurement data batch including the first sensor measurement data, the second sensor measurement data, and at least one target sensor measurement data. Ins examples the process includes outputting the sensor measurement data batch.

    OPTICAL IMAGE STABILIZATION TECHNIQUES
    2.
    发明申请

    公开(公告)号:US20200137309A1

    公开(公告)日:2020-04-30

    申请号:US16175692

    申请日:2018-10-30

    Abstract: An optical image stabilization (OIS) of a camera system includes a controller, a lens and an image stabilizing arrangement (ISA), including one or both of an actuator mechanically coupled with the lens. The controller is configured to: (1) receive measured accelerometer data relating to camera orientation with respect to a gravitational field and causes the actuator to locate the lens at a gravity-adjusted neutral position; and/or (2) synchronously relocate, during a time interval that falls at least partially between a first successive frame and a second successive frame, one or both of the camera lens and an image sensor by controlling a slew motion of the camera lens or image sensor, monitor and controls one or more of exposure time, effective readout time, lens relocation time and frame period, and rebalance the auto exposure algorithm such that the exposure time is less than a critical value.

    Roll compensation and blur reduction in tightly synchronized optical image stabilization (OIS)

    公开(公告)号:US10609288B1

    公开(公告)日:2020-03-31

    申请号:US16291977

    申请日:2019-03-04

    Abstract: The positioning of an adjustable lens in a camera assembly is synchronized with the capture of an image frame by the image sensor and the position of the adjustable lens is optimized to reduce the amount of blur caused by rotation of the camera assembly over the course of a frame. More specifically, techniques provide for moving the lens to a plurality of optimized positions, relative to the image sensor, over the course of a frame, to reduce motion blur in an image due to pitch, yaw, and/or roll motion of the camera assembly during the frame. Some embodiments may provide for “tight” synchronization in cases where the plurality of optimized positions are based on a time-dependent function that takes into account the rows of the image sensor being exposed over the course of the frame.

    Motion direction determination and application

    公开(公告)号:US10281484B2

    公开(公告)日:2019-05-07

    申请号:US14268968

    申请日:2014-05-02

    Abstract: This disclosure provides devices, computer programs and methods for determining a motion direction. In one aspect, a mobile device includes one or more sensors configured to measure acceleration data in each of one or more directions. The mobile device also includes one or more processors and a memory storing instructions that, when executed by the one or more processors, implement a motion direction estimation module. The motion direction estimation module is configured to identify a use case for the mobile device based at least in part on the acceleration data. The motion direction estimation module also is configured to select a set of one or more parameters based on the identified use case. The motion direction estimation module is further configured to calculate an estimated motion direction of the mobile device based on the acceleration data and the respective set of parameters corresponding to the identified use case.

    Robust heart rate estimation
    5.
    发明授权

    公开(公告)号:US09662023B2

    公开(公告)日:2017-05-30

    申请号:US14741425

    申请日:2015-06-16

    Abstract: Disclosed embodiments pertain to the measurement of heart rate in the presence of motion and noise. Spectral peaks in measurements by an optical sensor are compared with spectral peaks obtained from a motion sensor signal measurements, to obtain a fundamental frequency in the optical sensor signal, where the fundamental frequency is associated with a user's heart rate. A first heart rate may be estimated based on the fundamental frequency. A variety of quality metrics may be determined for the first heart rate estimate. A second estimated heart rate may be determined based by processing a frequency domain representation of the optical sensor signal based on a frequency domain representation of the motion sensor signal. One or more of the previously determined quality metrics may be dynamically adjusted based on a comparison of first and second estimated heart rates.

    MOTION DIRECTION DETERMINATION AND APPLICATION
    6.
    发明申请
    MOTION DIRECTION DETERMINATION AND APPLICATION 审中-公开
    运动方向确定和应用

    公开(公告)号:US20150316576A1

    公开(公告)日:2015-11-05

    申请号:US14268968

    申请日:2014-05-02

    CPC classification number: G06F3/011 G01C21/165 G01C22/006 G06F3/017 G06F3/0346

    Abstract: This disclosure provides devices, computer programs and methods for determining a motion direction. In one aspect, a mobile device includes one or more sensors configured to measure acceleration data in each of one or more directions. The mobile device also includes one or more processors and a memory storing instructions that, when executed by the one or more processors, implement a motion direction estimation module. The motion direction estimation module is configured to identify a use case for the mobile device based at least in part on the acceleration data. The motion direction estimation module also is configured to select a set of one or more parameters based on the identified use case. The motion direction estimation module is further configured to calculate an estimated motion direction of the mobile device based on the acceleration data and the respective set of parameters corresponding to the identified use case.

    Abstract translation: 本公开提供了用于确定运动方向的装置,计算机程序和方法。 在一个方面,移动设备包括被配置为测量一个或多个方向中的每个方向上的加速度数据的一个或多个传感器。 移动设备还包括一个或多个处理器和存储指令的存储器,所述指令在被一个或多个处理器执行时实现运动方向估计模块。 运动方向估计模块被配置为至少部分地基于加速度数据来识别用于移动设备的用例。 运动方向估计模块还被配置为基于所识别的用例来选择一组或多个参数。 运动方向估计模块还被配置为基于与所识别的使用情况相对应的加速度数据和相应的一组参数来计算移动设备的估计运动方向。

    Translation compensation in optical image stabilization (OIS)

    公开(公告)号:US11283999B2

    公开(公告)日:2022-03-22

    申请号:US16888274

    申请日:2020-05-29

    Abstract: Techniques described herein can address these and other issues by synchronizing the positioning of an adjustable lens in a camera assembly with the capture of an image frame by the image sensor and optimizing the position of the adjustable lens to reduce the amount of blur caused by translation of the camera assembly along a direction along the optical axis over the course of a frame. More specifically, techniques provide for moving the lens to a plurality of optimized positions, relative to the image sensor, over the course of a frame, to reduce motion blur in an image due to translation of the camera assembly in a direction of along the optical axis during the frame. Some embodiments may provide for “tight” synchronization in cases where the plurality of optimized positions are based on a time-dependent function that takes into account when each row of the image sensor is being exposed over the course of the frame.

    Optical image stabilization techniques

    公开(公告)号:US10999507B2

    公开(公告)日:2021-05-04

    申请号:US16175688

    申请日:2018-10-30

    Abstract: An optical image stabilization (OIS) of a camera system includes a controller, a lens and an image stabilizing arrangement (ISA), including one or both of an actuator and an image sensor. The controller is receives measured camera motion information from at least one motion sensor. Prior to acquisition of a succession of image frames, the controller determines a first desired start position, for the camera lens and/or the image sensor and, during acquisition of each respective image frame in the succession of image frames, causes the ISA to shift the camera lens and/or the image sensor so as to compensate for the measured camera motion. During a time interval that falls at least partially between a first and a second successive frame, the controller causes the ISA to relocate the camera lens and/or image sensor to a second desired start position for the second successive frame.

    Optical image stabilization techniques

    公开(公告)号:US10764501B2

    公开(公告)日:2020-09-01

    申请号:US16175692

    申请日:2018-10-30

    Abstract: An optical image stabilization (OIS) of a camera system includes a controller, a lens and an image stabilizing arrangement (ISA), including one or both of an actuator mechanically coupled with the lens. The controller is configured to: (1) receive measured accelerometer data relating to camera orientation with respect to a gravitational field and causes the actuator to locate the lens at a gravity-adjusted neutral position; and/or (2) synchronously relocate, during a time interval that falls at least partially between a first successive frame and a second successive frame, one or both of the camera lens and an image sensor by controlling a slew motion of the camera lens or image sensor, monitor and controls one or more of exposure time, effective readout time, lens relocation time and frame period, and rebalance the auto exposure algorithm such that the exposure time is less than a critical value.

    Sensor auto-calibration
    10.
    发明授权
    Sensor auto-calibration 有权
    传感器自动校准

    公开(公告)号:US09581466B2

    公开(公告)日:2017-02-28

    申请号:US13673950

    申请日:2012-11-09

    Abstract: Aspects of the disclosure relate to computing technologies. In particular, aspects of the disclosure relate to mobile computing device technologies, such as systems, methods, apparatuses, and computer-readable media for scheduling an execution of a task, such as a non-real time, non-latency sensitive background task on a computing device. In one implementation, the technique includes detecting a first state of a device, wherein the first state of the device is associated with a first power level and a first task, wherein the first power level is at least partially based on power consumption of a first task, determining that the first power level associated with the first state is above a threshold, and in response to determining that the first power level associated with the first state is above the threshold, and scheduling an execution of a second task on the device, wherein the second task is associated with automatically collecting of calibration data using at least one sensor.

    Abstract translation: 本公开的方面涉及计算技术。 特别地,本公开的方面涉及移动计算设备技术,例如用于调度任务的执行的系统,方法,设备和计算机可读介质,诸如非实时非延迟敏感的后台任务 计算设备。 在一个实现中,该技术包括检测设备的第一状态,其中设备的第一状态与第一功率电平和第一任务相关联,其中第一功率电平至少部分地基于第一功率电平的功率消耗 确定与第一状态相关联的第一功率电平高于阈值,并且响应于确定与第一状态相关联的第一功率电平高于阈值,并且调度设备上的第二任务的执行, 其中所述第二任务与使用至少一个传感器自动收集校准数据相关联。

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