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    Light distribution for active depth systems
    2.
    发明授权
    Light distribution for active depth systems 有权

    公开(公告)号：US11629949B2

    公开(公告)日：2023-04-18

    申请号：US15958651

    申请日：2018-04-20

    Applicant: QUALCOMM Incorporated

    Inventor： Albrecht Johannes Lindner ,  Kalin Mitkov Atanassov ,  Stephen Michael Verrall

    IPC: G01B11/22 ,  G01B11/25

    Abstract: Aspects of the present disclosure relate to systems and methods for structured light depth systems. An example active depth system may include a receiver to receive reflections of transmitted light and a transmitter including one or more light sources to transmit light in a spatial distribution. The spatial distribution of transmitted light may include a first region of a first plurality of light points and a second region of a second plurality of light points. A first density of the first plurality of light points is greater than a second density of the second plurality of light points when a first distance between a center of the spatial distribution and a center of the first region is less than a second distance between the center of the spatial distribution and the center of the second region.

    Alternating light distributions for active depth sensing
    3.
    发明授权
    Alternating light distributions for active depth sensing 有权

    公开(公告)号：US11580654B2

    公开(公告)日：2023-02-14

    申请号：US16893081

    申请日：2020-06-04

    Applicant: QUALCOMM Incorporated

    Inventor： James Wilson Nash ,  Kalin Mitkov Atanassov ,  Ioannis Nousias ,  Mark Ian Roy Muir ,  Sami Khawam

    IPC: G06T7/521 ,  G06V20/13 ,  G06V20/64

    Abstract: Aspects of the present disclosure relate to systems and methods for active depth sensing. An example apparatus configured to perform active depth sensing includes a projector. The projector is configured to emit a first distribution of light during a first time and emit a second distribution of light different from the first distribution of light during a second time. A set of final depth values of one or more objects in a scene is based on one or more reflections of the first distribution of light and one or more reflections of the second distribution of light. The projector may include a laser array, and the apparatus may be configured to switch between a first plurality of lasers of the laser array to emit light during the first time and a second plurality of laser to emit light during the second time.

    ALTERNATING LIGHT DISTRIBUTIONS FOR ACTIVE DEPTH SENSING
    4.
    发明申请
    ALTERNATING LIGHT DISTRIBUTIONS FOR ACTIVE DEPTH SENSING 有权

    公开(公告)号：US20210201519A1

    公开(公告)日：2021-07-01

    申请号：US16893081

    申请日：2020-06-04

    Applicant: QUALCOMM Incorporated

    Inventor： James Wilson NASH ,  Kalin Mitkov Atanassov ,  Ioannis Nousias ,  Mark Ian Roy Muir ,  Sami Khawam

    IPC: G06T7/521 ,  G06K9/00

    Abstract: Aspects of the present disclosure relate to systems and methods for active depth sensing. An example apparatus configured to perform active depth sensing includes a projector. The projector is configured to emit a first distribution of light during a first time and emit a second distribution of light different from the first distribution of light during a second time. A set of final depth values of one or more objects in a scene is based on one or more reflections of the first distribution of light and one or more reflections of the second distribution of light. The projector may include a laser array, and the apparatus may be configured to switch between a first plurality of lasers of the laser array to emit light during the first time and a second plurality of laser to emit light during the second time.

    Object reconstruction in disparity maps using displaced shadow outlines
    5.
    发明授权
    Object reconstruction in disparity maps using displaced shadow outlines 有权

    公开(公告)号：US10574947B2

    公开(公告)日：2020-02-25

    申请号：US15211877

    申请日：2016-07-15

    Applicant: QUALCOMM Incorporated

    Inventor： Albrecht Johannes Lindner ,  Hasib Ahmed Siddiqui ,  Kalin Mitkov Atanassov

    IPC: H04N9/00 ,  G06K9/62 ,  G06T7/521 ,  G06T7/10 ,  G06T7/50 ,  G06K19/06 ,  G06T11/20

    Abstract: Systems and methods for reconstructing an object boundary in a disparity map generated by a structured light system are disclosed. One aspect is a structured light system. The system includes an image projecting device configured to project codewords. The system further includes a receiver device including a sensor, the receiver device configured to sense the projected codewords reflected from an object. The system further includes a processing circuit configured to generate a disparity map of the object, detect a first boundary of the object in the disparity map, identify a shadow region in the disparity map adjoining the first boundary, the shadow region including pixels with codeword outages, and change a shape of the object in the disparity map based on the detected shadow region. The system further includes a memory device configured to store the disparity map.

    Automatic multiple depth cameras synchronization using time sharing
    6.
    发明授权
    Automatic multiple depth cameras synchronization using time sharing 有权

    公开(公告)号：US10419703B2

    公开(公告)日：2019-09-17

    申请号：US14599248

    申请日：2015-01-16

    Applicant: QUALCOMM Incorporated

    Inventor： Sergiu Radu Goma ,  Kalin Mitkov Atanassov

    IPC: H04N5/44 ,  H04N5/33 ,  H04N5/40 ,  G01B11/245 ,  G01B11/25 ,  G01S17/10 ,  G01S17/87 ,  G01S17/89 ,  G01S7/481 ,  G01S7/483 ,  G03B17/38 ,  G03B35/00 ,  H04N13/271

    Abstract: Aspects relate to a depth sensing system for capturing an image containing depth information of an object. In one embodiment, a depth sensing device for use in conjunction with multiple depth sensing devices for capturing an image containing depth information of an object comprises a near-infrared transmitter comprising a laser capable of producing a near infra-red light beam, a diffractive optical element positioned to receive a light beam emitted from the laser, the diffractive optical element, a collimating lens, and a near-infrared receiver coupled to the transmitter in a relative position, the receiver comprising a sensor assembly capable of producing an image of the received light, the depth sensing device being configured to transmit and receive near infra-red light beams during a time period that is different than any of the other of two or more transmitter-receiver pairs of devices in communication with the depth sensing device.

    Active sensing spatial resolution improvement through multiple receivers and code reuse
    9.
    发明授权
    Active sensing spatial resolution improvement through multiple receivers and code reuse 有权

    公开(公告)号：US10068338B2

    公开(公告)日：2018-09-04

    申请号：US14645923

    申请日：2015-03-12

    Applicant: QUALCOMM Incorporated

    Inventor： Kalin Mitkov Atanassov ,  Sergiu Radu Goma

    IPC: G06K9/20 ,  G06K9/62 ,  G06T7/00 ,  H04N13/02 ,  H04N5/247 ,  H04N13/204 ,  H04N13/271 ,  G06T7/521

    Abstract: Structured light active sensing systems transmit and receive spatial codes to generate depth maps. Spatial codes can't be repeated within a disparity range if they are to be uniquely identified. This results in large numbers of codes for single transmitter/single receiver systems, because reflected ray traces from two object locations may be focused onto the same location of the receiver sensor, making it impossible to determine which object location reflected the code. However, the original code location may be uniquely identified because ray traces from the two object locations that focus onto the same location of the first receiver sensor may focus onto different locations on the second receiver sensor. Described herein are active sensing systems and methods that use two receivers to uniquely identify original code positions and allow for greater code reuse.

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