Training for camera lens distortion

    公开(公告)号:US10956782B2

    公开(公告)日:2021-03-23

    申请号:US16193970

    申请日:2018-11-16

    Abstract: Cameras with large field-of-view lenses can cause significant geometric distortions of the images acquired. Training for object detection normally takes place on undistorted images. Thus, in order to detect objects of interest within the acquired images, an undistortion procedure is applied on the acquired images and an object detection is then performed on the undistorted images. Unfortunately, such undistortion procedure is too computationally expensive to be run on some edge devices. To remove the need to perform the undistortion procedure, it is proposed to train for object detection directly from distorted acquired images.

    Detect, reflect, validate
    3.
    发明授权

    公开(公告)号:US10453215B2

    公开(公告)日:2019-10-22

    申请号:US15980447

    申请日:2018-05-15

    Abstract: Techniques are presented for detecting a visual marker. A first image containing the visual marker may be captured at a first time under a first lighting condition. A first image-based detection for the visual marker may be performed based on the first image, using a first detector, to produce a first set of results. A second image containing the visual marker may be captured at a second time under a second lighting condition different from the first lighting condition. Based on the first set of results, a second image-based detection for the visual marker may be performed based on the second image, using a second detector different from the first detector, to produce a second set of results.

    System for eye tracking
    5.
    发明授权

    公开(公告)号:US10674143B2

    公开(公告)日:2020-06-02

    申请号:US15973182

    申请日:2018-05-07

    Abstract: Certain aspects of the present disclosure relate to a system. In some aspects, the system may include an emitter configured to emit a light. The system may include a light guide configured to direct the light toward a pupil of an eye. The light guide may include a directing portion configured to propagate the light. The light guide may include a turning portion configured to receive light from the directing portion and direct the light toward the pupil of the eye and configured to receive reflected light directed from the pupil of the eye and direct the reflected light toward the directing portion. The system may include a receiver configured to receive the reflected light from the light guide. The system may include a processor configured to determine a gaze direction of the pupil of the eye based at least in part on the reflected light received by the receiver.

    Low power visual tracking systems

    公开(公告)号:US12039749B2

    公开(公告)日:2024-07-16

    申请号:US16904466

    申请日:2020-06-17

    Abstract: Systems, methods, and non-transitory media are provided for low-power visual tracking systems. An example method can include receiving one or more images captured by each image sensor system from a set of image sensor systems on a first device, the one or more images capturing a set of patterns on a second device, wherein the first device has lower power requirements than the second device, the set of patterns having a predetermined configuration on the second device; determining, from the one or more images captured by each image sensor system, a set of pixels corresponding to the set of patterns on the second device; determining, based on the set of pixels corresponding to the set of patterns, a location and relative pose in space of each pattern; and determining, based on the location and relative pose of each pattern, a pose of the first device relative to the second device.

    Modulo-space processing in multiply-and-accumulate units

    公开(公告)号:US11947960B2

    公开(公告)日:2024-04-02

    申请号:US18052774

    申请日:2022-11-04

    CPC classification number: G06F9/3001 G06F7/5443

    Abstract: Certain aspects of the present disclosure provide techniques and apparatus for performing mathematical operations on processing units based on data in the modulo space. An example method includes receiving a binary-space input to process (e.g., using a neural network or other processing system). The binary-space input is converted into a modulo-space input based on a set of coprimes defined for executing operations in a modulo space. A modulo-space result is generated through one or more modulo-space multiply-and-accumulate (MAC) units based on the modulo-space input. The modulo-space result is converted into a binary-space result, and the binary-space result is output.

    Image sensor module
    8.
    发明授权

    公开(公告)号:US11653083B2

    公开(公告)日:2023-05-16

    申请号:US17247529

    申请日:2020-12-15

    CPC classification number: H04N5/23219 H01L27/14605 H04N5/37455 H01L27/14621

    Abstract: Various aspects of the present disclosure generally relate to a sensor module. In some aspects, an image sensor module may include an array of photon sensors configured to output a first set of signals corresponding to a set of photon sensors of the array of photon sensors. The set of photon sensors may include a row of photon sensors, or a column of photon sensors, of the array of photon sensors. The image sensor module may include a plurality of data selector components configured to receive the first set of signals and output a second set of signals corresponding to a subset of the set of photon sensors.

    SYSTEM FOR EYE TRACKING
    9.
    发明申请

    公开(公告)号:US20180332275A1

    公开(公告)日:2018-11-15

    申请号:US15973182

    申请日:2018-05-07

    Abstract: Certain aspects of the present disclosure relate to a system. In some aspects, the system may include an emitter configured to emit a light. The system may include a light guide configured to direct the light toward a pupil of an eye. The light guide may include a directing portion configured to propagate the light. The light guide may include a turning portion configured to receive light from the directing portion and direct the light toward the pupil of the eye and configured to receive reflected light directed from the pupil of the eye and direct the reflected light toward the directing portion. The system may include a receiver configured to receive the reflected light from the light guide. The system may include a processor configured to determine a gaze direction of the pupil of the eye based at least in part on the reflected light received by the receiver.

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