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    METHOD AND SYSTEM FOR DETERMINING A DEPTH IMAGE OF A SCENE
    5.
    发明公开
    METHOD AND SYSTEM FOR DETERMINING A DEPTH IMAGE OF A SCENE 审中-公开

    公开(公告)号：US20240153117A1

    公开(公告)日：2024-05-09

    申请号：US18488086

    申请日：2023-10-17

    Applicant: STMicroelectronics (Grenoble 2) SAS

    Inventor： Jeremie Teyssier ,  Cedric Tubert ,  Thibault Augey ,  Valentin Rebiere ,  Thomas Bouchet

    IPC: G06T7/521 ,  G06T7/90

    CPC classification number: G06T7/521 ,  G06T7/90 ,  G06T2207/10024 ,  G06T2207/10028

    Abstract: The present description concerns a system for determining a depth image of a scene, configured to project a spot pattern onto the scene and acquire an image of the scene; determining I and Q values of the image pixels; determining, for each pixel, at least one confidence value to form a confidence image; determining the local maximum points of the confidence image having a confidence value greater than a first threshold; selecting, for each local maximum point, pixels around the local maximum point having a confidence value greater than a second threshold; determining a value Imoy equal to the average of the I values of the selected pixels and a value Qmoy equal to the average of the Q values of the selected pixels; and determining the depth of the local maximum point based on values Imoy and Qmoy.

    OBTAINING A DEPTH MAP
    8.
    发明公开
    OBTAINING A DEPTH MAP 审中-公开

    公开(公告)号：US20240202945A1

    公开(公告)日：2024-06-20

    申请号：US18531192

    申请日：2023-12-06

    Applicant: STMicroelectronics (Grenoble 2) SAS

    Inventor： Jeremie Teyssier ,  Cedric Tubert ,  Thibault Augey ,  Thomas Bouchet

    IPC: G06T7/50 ,  G06V10/74 ,  G06V10/764

    CPC classification number: G06T7/50 ,  G06V10/761 ,  G06V10/764

    Abstract: A method comprises, for each pixel of a depth map, acquiring samples and calculating a distance, and defining a window of N*N pixels with this image pixel at the center, N being an odd integer equal to or greater than 3, and, for each window, classifying the pixels of the window into groups, based on a threshold and distances calculated, calculating for each group, a number of pixels in the group, a confidence factor of the group equal to a sum of the confidence factors of the pixels each determined from the samples acquired for the pixel, and scanning the window from the central pixel by comparing, for each pixel, the confidence factor of the group of the pixel with a threshold and the number of pixels of the group of the pixel with another threshold, and determining whether the central pixel is retained, replaced or discarded.

    TIME-OF-FLIGHT SENSOR AND METHOD FOR MEASURING DISTANCE
    9.
    发明公开
    TIME-OF-FLIGHT SENSOR AND METHOD FOR MEASURING DISTANCE 审中-公开

    公开(公告)号：US20230408698A1

    公开(公告)日：2023-12-21

    申请号：US18334501

    申请日：2023-06-14

    Applicant: STMicroelectronics (Grenoble 2) SAS

    Inventor： Thibault Augey ,  Jeremie Teyssier

    IPC: G01S17/89 ,  G01S7/481

    CPC classification number: G01S17/89 ,  G01S7/4816

    Abstract: A time-of-flight sensor includes a light emitting device configured to emit light rays toward a scene and a photosensitive pixel matrix configured to receive light signals reflected from the scene and to generate an image that includes dots associated with the light signals reflected from the scene. Each dot covers a number of pixels of the image. A processing unit is configured to, for each dot of the image, partition the pixels of the dot into at least one group of pixels and, for each group of pixels, compute a representative value of distance values of the pixels of this group. The representative distance value can then be applied to each pixel of the group of pixels.

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