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    Method and device for electronic image stabilization of a captured image
    1.
    发明授权
    Method and device for electronic image stabilization of a captured image 有权

    公开(公告)号：US10958838B2

    公开(公告)日：2021-03-23

    申请号：US16679046

    申请日：2019-11-08

    Applicant: InvenSense, Inc.

    Inventor： William Kerry Keal

    IPC: H04N5/228 ,  H04N5/232

    Abstract: In a method of electronic image stabilization, a processor buffers image data into a memory buffer, the image data being obtained by the processor from an image sensor disposed in an electronic device. The processor obtains motion data from a motion sensor disposed in the electronic device, wherein the motion data corresponds with a time of capture of the image data. The processor analyzes the motion data to determine a stabilization correction to apply to the image data. The processor applies the determined stabilization correction to the image data to achieve stabilized image data. The determined stabilization correction is applied, and the stabilized image data is achieved, by the processor without requiring a transfer of the image data from the memory buffer to a graphics processing unit. The stabilized image data is output.

    System and method for sensor calibration
    5.
    发明授权
    System and method for sensor calibration 有权

    公开(公告)号：US10359297B2

    公开(公告)日：2019-07-23

    申请号：US14644171

    申请日：2015-03-10

    Applicant: INVENSENSE, INC.

    Inventor： William Kerry Keal

    IPC: G01C25/00 ,  G01P21/00

    Abstract: A method and system to determine orientation of a device is disclosed. The device includes a plurality of sensors. A first signal indicative of an orientation of the device is generated using at least a first subset of sensors, with at least one sensor. A second signal indicative of the orientation of the device is generated using at least a second subset of sensors, with at least one sensor. The first signal and the second signal is compared to determine if indicated orientation is acceptable. If the orientation is not acceptable, one or more sensors are calibrated.

    Deduced reckoning navigation without a constraint relationship between orientation of a sensor platform and a direction of travel of an object
    7.
    发明授权
    Deduced reckoning navigation without a constraint relationship between orientation of a sensor platform and a direction of travel of an object 有权

    公开(公告)号：US09816819B2

    公开(公告)日：2017-11-14

    申请号：US14057594

    申请日：2013-10-18

    Applicant: Invensense Inc.

    Inventor： William Kerry Keal ,  David Sachs ,  Shang-Hung Lin ,  Erik Anderson

    IPC: G01C19/00 ,  G01C21/16

    CPC classification number: G01C21/165

    Abstract: Systems, methods, and apparatus for performing deduced reckoning navigation without a constraint relationship between orientation of a sensor platform and a direction of travel of an object are described herein. A sensor fusion component can be configured to receive data from sensors of a sensor platform coupled to a pedestrian; and generate world coordinate information based on the data. Further, a gait recognition component can be configured to record one or more walking patterns of the pedestrian in a training database; and determine whether the world coordinate information is associated with a walking pattern of the one or more walking patterns. Furthermore, a position estimation component can be configured to estimate a position of the pedestrian based on the world coordinate information if the world coordinate information is associated with the walking pattern, regardless of an orientation of the sensor platform with respect to the position of the pedestrian.

    In-use automatic calibration methodology for sensors in mobile devices
    8.
    发明授权
    In-use automatic calibration methodology for sensors in mobile devices 有权

    公开(公告)号：US09683865B2

    公开(公告)日：2017-06-20

    申请号：US13650480

    申请日：2012-10-12

    Applicant: InvenSense, Inc.

    Inventor： William Kerry Keal ,  Yuan Zheng ,  Anjia Gu ,  James Lim ,  Shang-Hung Lin

    IPC: G01P21/00 ,  G01C25/00

    CPC classification number: G01C25/005 ,  G01P21/00

    Abstract: A method, system and computer readable medium for calibrating an accelerometer in a portable device is disclosed. The method, system and computer readable medium comprises receiving data from the accelerometer, and providing accelerometer samples from the data based upon one or more selection rules that adaptively selects data that satisfy certain criteria. The method system and computer readable medium also includes fitting the accelerometer samples to a mathematical mode. The method system and computer readable medium further includes providing a bias of the accelerometer based upon a center of the mathematical model.

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