中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

8 records (took 0.01 seconds)

    METHOD OF PROCESSING INFORMATION FROM AN EVENT-BASED SENSOR
    1.
    发明申请
    METHOD OF PROCESSING INFORMATION FROM AN EVENT-BASED SENSOR 有权

    公开(公告)号：US20220101640A1

    公开(公告)日：2022-03-31

    申请号：US17427033

    申请日：2020-01-29

    Applicant: PROPHESEE

    Inventor： Xavier LAGORCE

    IPC: G06V20/70 ,  G06F16/583 ,  G06V10/60 ,  G06T7/269 ,  G06T7/50 ,  G06V10/762 ,  G06V10/44

    Abstract: An event-based sensor has an array of pixels facing a scene. The information to be processed includes events originating from the pixels depending on variations of incident light from the scene. A method includes storing a data structure for a set of pixels of the array, the data structure including, for each pixel of the set, event data associated with a most recent event originating from the pixel. Upon receiving a current event from a first pixel of the array, the method includes retrieving any event data included in the data structure for a group of pixels including the first pixel and a plurality of second pixels adjacent to the first pixel in the array. The current event is labelled based on at least one connectivity criterion between the current event and the most recent event originating from a pixel of the group.

    THREE-DIMENSIONAL IMAGING AND SENSING USING A DYNAMIC VISION SENSOR AND PATTERN PROJECTION
    2.
    发明申请
    THREE-DIMENSIONAL IMAGING AND SENSING USING A DYNAMIC VISION SENSOR AND PATTERN PROJECTION 有权

    公开(公告)号：US20220120560A1

    公开(公告)日：2022-04-21

    申请号：US17310753

    申请日：2020-02-21

    Applicant: PROPHESEE

    Inventor： Guillaume CHICAN ,  Manuele BRAMBILLA ,  Xavier LAGORCE

    IPC: G01B11/25 ,  G06K9/62 ,  G06T7/521

    Abstract: The present disclosure generally relates to systems and methods for three-dimensional image sensing. More specifically, and without limitation, this disclosure relates to systems and methods for detecting three-dimensional images, and using asynchronous image sensors for detecting the same. In one implementation, at least one processor determines a plurality of patterns associated with a plurality of electromagnetic pulses emitted by a projector onto a scene; receives, from an image sensor, one or more first signals based on reflections caused by the plurality of electromagnetic pulses; detects one or more first events corresponding to one or more first pixels of the image sensor based on the received signals; based on the one or more first events, initializes one or more first events more state machines; receives, from the image sensor, one or more second signals corresponding to the reflections; detects one or more second events corresponding to one or more second pixels of the image sensor based on the received signals; determines candidates for connecting the one or more state machines more second events to the one or more first events; and determines three-dimensional points for the one or more first pixels and the one or more second pixels based on the candidates and the one or more state machines.

    ANTI-FLICKER FILTER MITIGATION FOR AN EVENT-BASED SENSOR
    3.
    发明公开
    ANTI-FLICKER FILTER MITIGATION FOR AN EVENT-BASED SENSOR 审中-公开

    公开(公告)号：US20230412930A1

    公开(公告)日：2023-12-21

    申请号：US18336405

    申请日：2023-06-16

    Applicant: PROPHESEE

    Inventor： Serge BURY ,  Xavier LAGORCE

    IPC: H04N23/745 ,  H04N25/60

    CPC classification number: H04N23/745 ,  H04N25/60

    Abstract: An apparatus comprising an interface and a processor. The interface may be configured to receive an asynchronous event stream from an event-based sensor. The event stream may comprise a series of pixel locations with a timestamp each generated in response to an autonomous detection by any of a plurality of pixels of the event-based sensor exceeding a threshold. The processor may be configured to detect a characteristic pattern of a flicker event in the event stream and generate an output signal containing a tick result in response to the characteristic pattern of the flicker event. A predicted recurring interval of the flicker event may be determined based on the characteristic pattern. The tick result may comprise future timestamps of the flicker event determined based on the predicted recurring interval for the timestamp of the autonomous detection of a particular one of the pixel locations.

    THREE-DIMENSIONAL IMAGING AND SENSING USING A DYNAMIC VISION SENSOR AND PATTERN PROJECTION
    4.
    发明申请
    THREE-DIMENSIONAL IMAGING AND SENSING USING A DYNAMIC VISION SENSOR AND PATTERN PROJECTION 有权

    公开(公告)号：US20220092804A1

    公开(公告)日：2022-03-24

    申请号：US17310755

    申请日：2020-02-21

    Applicant: PROPHESEE

    Inventor： Guillaume CHICAN ,  Manuele BRAMBILLA ,  Xavier LAGORCE

    IPC: G06T7/521 ,  G01B11/25 ,  G06K9/62 ,  G01B11/14

    Abstract: In one implementation, a three-dimensional image sensing system is provided that includes at least one processor that detects, from an image sensor, one or more first events based on reflections caused by electromagnetic pulses associated with a plurality of projected line patterns and corresponding to one or more first pixels of the image sensor. The at least one processor also detects, from the image sensor, one or more second events based on the reflections and corresponding to one or more second pixels of the image sensor, identifies a line corresponding to the one or more second events and the one or more first events, calculates three-dimensional rays for the one or more first pixels and the one or more second pixels based on the identified line, and calculates three-dimensional image or more first pixels and the one or more second pixels based on the three-dimensional rays and a plane equation.

    METHOD OF PROCESSING A SERIES OF EVENTS RECEIVED ASYNCHRONOUSLY FROM AN ARRAY OF PIXELS OF AN EVENT-BASED LIGHT SENSOR
    8.
    发明申请
    METHOD OF PROCESSING A SERIES OF EVENTS RECEIVED ASYNCHRONOUSLY FROM AN ARRAY OF PIXELS OF AN EVENT-BASED LIGHT SENSOR 有权

    公开(公告)号：US20220100658A1

    公开(公告)日：2022-03-31

    申请号：US17430141

    申请日：2020-02-10

    Applicant: PROPHESEE

    Inventor： Daniele PERRONE ,  Xavier LAGORCE ,  Vitor SCHAMBACH COSTA ,  Ludovic CHOTARD ,  Sylvain BROHAN

    IPC: G06F12/0815 ,  G06F12/0895

    Abstract: The method processes a series of events received asynchronously from an array of pixels of an event-based light sensor. Each event of the series comprises an address of a pixel of the array from which the event is received, and an attribute value depending on incident light sensed by that pixel. The method comprises: storing a data structure in a first memory, the data structure including event data for at least some of the pixels of the array, the event data for a pixel being related to at least one event most recently received from said pixel; during a timeslot, building, in a second memory having a faster access than the first memory, a map for the pixels of the array as the events of the series are received, the map including an information element for each pixel of the array, the information element having one of a plurality of values including a nil value indicating an absence of event during the timeslot; and updating the data structure after the timeslot using the map.

Patent Agency Ranking