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    Spatial alignment transform without FOV loss
    12.
    发明授权
    Spatial alignment transform without FOV loss 有权

    公开(公告)号：US11405563B2

    公开(公告)日：2022-08-02

    申请号：US17094052

    申请日：2020-11-10

    Applicant: QUALCOMM Incorporated

    Inventor： Jianfeng Ren ,  Shizhong Liu ,  Weiliang Liu ,  Kuan-Chen Pan ,  Nikhil Uchil ,  Wei Zou

    IPC: H04N5/262 ,  H04N5/225 ,  H04N5/232 ,  G06T3/00

    Abstract: This disclosure provides devices, methods, computer-readable medium, and means for spatial alignment transform. In some aspects, a device may perform operations including capturing a first image of a scene using a first sensor at a first zoom ratio, capturing a second image of the scene using a second sensor at a second zoom ratio, the first image having a different field-of-view (FOV) than the second image, determining a translation matrix based on one or more spatial misalignments between the first image and the second image, determining a confidence associated with the translation matrix, in response to the confidence being greater than a confidence threshold, determining a weighting factor based on the first zoom ratio, the second zoom ratio, and a current zoom ratio of the device, applying the weighting factor to the translation matrix, and warping the first image to the second image using the weighted translation matrix.

    Systems and methods for object tracking
    18.
    发明授权
    Systems and methods for object tracking 有权

    公开(公告)号：US10586102B2

    公开(公告)日：2020-03-10

    申请号：US14829406

    申请日：2015-08-18

    Applicant: QUALCOMM Incorporated

    Inventor： Jianfeng Ren ,  Feng Guo ,  Ruiduo Yang

    IPC: G06K9/00 ,  G06T7/246 ,  G06K9/46 ,  G06T3/40

    Abstract: A method performed by an electronic device is described. The method includes obtaining a first frame of a scene. The method also includes performing object recognition of at least one object within a first bounding region of the first frame. The method further includes performing object tracking of the at least one object within the first bounding region of the first frame. The method additionally includes determining a second bounding region of a second frame based on the object tracking. The second frame is subsequent to the first frame. The method also includes determining whether the second bounding region is valid based on a predetermined object model.

    Methods and systems of generating a background picture for video coding
    19.
    发明授权
    Methods and systems of generating a background picture for video coding 有权

    公开(公告)号：US10375399B2

    公开(公告)日：2019-08-06

    申请号：US15134183

    申请日：2016-04-20

    Applicant: QUALCOMM Incorporated

    Inventor： Lei Wang ,  Ying Chen ,  Ning Bi ,  Xuerui Zhang ,  Lei Ma ,  Chinchuan Chiu ,  Jianfeng Ren

    IPC: H04N19/159 ,  H04N19/105 ,  H04N19/172 ,  H04N19/182 ,  H04N19/58 ,  H04N19/23 ,  G06T7/254

    Abstract: Techniques and systems are provided for generating a background picture. The background picture can be used for coding one or more pictures. For example, a method of generating a background picture includes generating a long-term background model for one or more pixels of a background picture. The long-term background model includes a statistical model for detecting long-term motion of the one or more pixels in a sequence of pictures. The method further includes generating a short-term background model for the one or more pixels of the background picture. The short-term background model detects short-term motion of the one or more pixels between two or more pictures. The method further includes determining a value for the one or more pixels of the background picture using the long-term background model and the short-term background model.

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