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    Method and system for real time audio in multi-point video conferencing
    6.
    发明授权
    Method and system for real time audio in multi-point video conferencing 有权

    公开(公告)号：US12015875B2

    公开(公告)日：2024-06-18

    申请号：US17551339

    申请日：2021-12-15

    Applicant: Pexip AS

    Inventor： Håvard Graff ,  Tulio Beloqui

    IPC: H04N7/15 ,  G10L19/00 ,  H04L12/18 ,  H04L65/65 ,  H04L65/70

    CPC classification number: H04N7/152 ,  G10L19/0017 ,  H04L12/1827 ,  H04L65/65 ,  H04L65/70

    Abstract: A real time audio multi-point videoconferencing system comprising at least two videoconferencing endpoints in communication with a multipoint control unit, and a method of providing the real time audio. The method comprising capturing input lossless digital audio streams on each of the at least two videoconferencing endpoints, transmitting the input lossless digital audio streams from each of the at least two videoconferencing endpoints to the MCU using a frame size in the range 0.25 ms-3 ms, mixing, using the MCU, the input lossless digital audio streams into a plurality of output lossless digital audio streams, transmitting a different one of the plurality of output lossless digital audio streams to each of the at least two videoconferencing endpoints using a frame size in the range 0.25 ms-3 ms, and playback the plurality of output lossless digital audio streams on each of the at least two videoconferencing endpoints.

    Method, computer program and system for detecting changes and moving objects in a video view
    7.
    发明授权
    Method, computer program and system for detecting changes and moving objects in a video view 有权

    公开(公告)号：US11538169B2

    公开(公告)日：2022-12-27

    申请号：US17349252

    申请日：2021-06-16

    Applicant: Pexip AS

    Inventor： Håvard Graff

    IPC: G06T7/11 ,  G06T7/246 ,  G06T5/30 ,  G06T7/155 ,  G06V10/34

    Abstract: The present invention relates to an image processing device and a method of framing changes and movements in a video image divided into N×N blocks of pixel positions. The method comprises calculating a first bitmap of the video image by a DCT transform on each of the N×N blocks of pixel positions, assigning a first binary value to the pixel positions of the N×N blocks when more than an amount of change, and a second binary value to the pixel positions of the N×N blocks when less than an amount of change. Calculating a third bitmap by an OR operation between a number of bitmaps representing past time frames of the video image, calculating a fourth bitmap by performing a dilation process of the third bitmap representing the current time frame of the video image, and creating one or more frames identifying area of changes and movements in the video image based on detecting BLOBs (Binary Large Objects) in the fourth bitmaps.

    METHOD AND SYSTEM FOR REAL TIME AUDIO IN MULTI-POINT VIDEO CONFERENCING
    8.
    发明申请
    METHOD AND SYSTEM FOR REAL TIME AUDIO IN MULTI-POINT VIDEO CONFERENCING 有权

    公开(公告)号：US20220201252A1

    公开(公告)日：2022-06-23

    申请号：US17551339

    申请日：2021-12-15

    Applicant: Pexip AS

    Inventor： Håvard Graff ,  Tulio Beloqui

    IPC: H04N7/15 ,  G10L19/00 ,  H04L65/60 ,  H04L65/65 ,  H04L12/18

    Abstract: A real time audio multi-point videoconferencing system comprising at least two videoconferencing endpoints in communication with a multipoint control unit, and a method of providing the real time audio. The method comprising capturing input lossless digital audio streams on each of the at least two videoconferencing endpoints, transmitting the input lossless digital audio streams from each of the at least two videoconferencing endpoints to the MCU using a frame size in the range 0.25 ms-3 ms, mixing, using the MCU, the input lossless digital audio streams into a plurality of output lossless digital audio streams, transmitting a different one of the plurality of output lossless digital audio streams to each of the at least two videoconferencing endpoints using a frame size in the range 0.25 ms-3 ms, and playback the plurality of output lossless digital audio streams on each of the at least two videoconferencing endpoints.

    METHOD, COMPUTER PROGRAM AND SYSTEM FOR DETECTING CHANGES AND MOVING OBJECTS IN A VIDEO VIEW
    10.
    发明申请
    METHOD, COMPUTER PROGRAM AND SYSTEM FOR DETECTING CHANGES AND MOVING OBJECTS IN A VIDEO VIEW 有权

    公开(公告)号：US20220012857A1

    公开(公告)日：2022-01-13

    申请号：US17349252

    申请日：2021-06-16

    Applicant: Pexip AS

    Inventor： Håvard Graff

    IPC: G06T5/30 ,  G06T7/246

    Abstract: The present invention relates to an image processing device and a method of framing changes and movements in a video image divided into N×N blocks of pixel positions. The method comprises calculating a first bitmap of the video image by a DCT transform on each of the N×N blocks of pixel positions, assigning a first binary value to the pixel positions of the N×N blocks when more than an amount of change, and a second binary value to the pixel positions of the N×N blocks when less than an amount of change. Calculating a third bitmap by an OR operation between a number of bitmaps representing past time frames of the video image, calculating a fourth bitmap by performing a dilation process of the third bitmap representing the current time frame of the video image, and creating one or more frames identifying area of changes and movements in the video image based on detecting BLOBs (Binary Large Objects) in the fourth bitmaps.

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