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    DECODING A VIDEO STREAM WITHIN A BROWSER
    2.
    发明公开
    DECODING A VIDEO STREAM WITHIN A BROWSER 审中-公开

    公开(公告)号：US20240064388A1

    公开(公告)日：2024-02-22

    申请号：US18254367

    申请日：2021-11-26

    申请人： V-NOVA INTERNATIONAL LIMITED

    发明人： Robert JOHNSON ,  Guido MEARDI ,  Fabio MURRA

    IPC分类号： H04N21/81 ,  H04N19/39 ,  H04N21/2343 ,  H04N21/4402 ,  H04N21/488

    CPC分类号： H04N21/8173 ,  H04N19/39 ,  H04N21/234327 ,  H04N21/440227 ,  H04N21/4884

    摘要： Certain examples described herein relate to decoding a video stream within a browser. An encoded multi-layer video stream is received in a source buffer. An encoded base stream is extracted from the source buffer and decoded using a markup video element to obtain a decoded base stream. The decoded base stream is rendered in a first markup video display region, wherein the first markup video display region is hidden. An encoded enhancement stream is extracted from the source buffer and decoded to obtain a decoded enhancement stream. The decoded base stream is obtained from the first markup video display region and combined with the decoded enhancement stream to generate a reconstructed video stream, which is rendered in a second markup video display region that is visible within the browser.

    SIGNALING OF INFORMATION INDICATING TRANSFORM KERNEL SET IN IMAGE CODING
    5.
    发明申请
    SIGNALING OF INFORMATION INDICATING TRANSFORM KERNEL SET IN IMAGE CODING 有权

    公开(公告)号：US20230059802A1

    公开(公告)日：2023-02-23

    申请号：US17967106

    申请日：2022-10-17

    申请人： LG Electronics Inc.

    发明人： Junghak NAM ,  Moonmo KOO ,  Jaehyun LIM ,  Seunghwan KIM

    IPC分类号： H04N19/124 ,  H04N19/625 ,  H04N19/94 ,  H04N19/39

    摘要： An image decoding method according to the present document comprises a step of generating residual samples of a current block on the basis of residual information, wherein the residual information comprises a multiple transform selection (MTS) index and information regarding transform coefficients, the residual samples are generated from transform coefficients according to the information regarding the transform coefficients by using a transform kernel set, the transform kernel set is determined by the MTS index from among transform kernel set candidates, at least one of bins of a bin string of the MTS index is derived on the basis of context coding, the context coding is performed based on a value of a context index with respect to the MTS index.

    APPARATUS, A METHOD AND A COMPUTER PROGRAM FOR VIDEO CODING AND DECODING
    7.
    发明申请
    APPARATUS, A METHOD AND A COMPUTER PROGRAM FOR VIDEO CODING AND DECODING 有权

    公开(公告)号：US20220014733A1

    公开(公告)日：2022-01-13

    申请号：US17483243

    申请日：2021-09-23

    申请人： Nokia Technologies Oy

    发明人： Miska HANNUKSELA ,  Alireza AMINLOU

    IPC分类号： H04N19/105 ,  H04N19/174 ,  H04N19/33 ,  H04N19/39 ,  H04N19/55 ,  H04N19/597 ,  H04N13/161

    摘要： A method comprising: encoding an input picture into a coded constituent picture;
    reconstructing, as a part of said encoding, a decoded constituent picture corresponding to the coded constituent picture; encoding a spatial region into a coded tile, the encoding comprising: determining a horizontal offset and a vertical offset indicative of a region-wise anchor position of the spatial region within the decoded constituent picture; encoding the horizontal offset and the vertical offset; determining that a prediction unit at position of a first horizontal coordinate and a first vertical coordinate of the coded tile is predicted relative to the region-wise anchor position, wherein the first horizontal coordinate and the first vertical coordinate are horizontal and vertical coordinates, respectively, within the spatial region; indicating that the prediction unit is predicted relative to a prediction-unit anchor position that is relative to the horizontal and vertical offset; deriving a prediction-unit anchor position equal to sum of the first horizontal coordinate and the horizontal offset, and the first vertical coordinate and the vertical offset, respectively; and determining a motion vector for the prediction unit; and applying the motion vector relative to the prediction-unit anchor position to obtain a prediction block.

    Spatial scalability support in video encoding and decoding
    8.
    发明授权
    Spatial scalability support in video encoding and decoding 有权

    公开(公告)号：US11153583B2

    公开(公告)日：2021-10-19

    申请号：US16892709

    申请日：2020-06-04

    申请人： QUALCOMM Incorporated

    发明人： Vadim Seregin ,  Muhammed Zeyd Coban ,  Adarsh Krishnan Ramasubramonian ,  Marta Karczewicz

    IPC分类号： H04N19/39 ,  H04N19/107 ,  H04N19/70 ,  H04N19/61 ,  H04N19/187

    摘要： A video encoder or video decoder can be configured to obtain multi-layer video data that includes at least a first layer and a second layer; determine a layer identification value for the first layer and a layer identification value for the second layer, wherein the layer identification value for the second layer is higher than the layer identification value for the first layer; store decoded pictures of the first layer and decoded pictures of the second layer in a decoded picture buffer; and in response to determining that a picture of a layer is an instantaneous decoding refresh (IDR) picture, remove from the decoded picture buffer, all decoded pictures of a layer the IDR picture belongs to, while leaving in the decoded picture buffer all decoded pictures with layer identifications lower than a layer identification of the layer the IDR picture belongs to.

    SWITCHABLE SCALABLE AND MULTIPLE DESCRIPTION IMMERSIVE VIDEO CODEC
    10.
    发明申请
    SWITCHABLE SCALABLE AND MULTIPLE DESCRIPTION IMMERSIVE VIDEO CODEC 有权

    公开(公告)号：US20210258590A1

    公开(公告)日：2021-08-19

    申请号：US17226510

    申请日：2021-04-09

    申请人： Intel Corporation

    发明人： Jill Boyce ,  Basel Salahieh

    IPC分类号： H04N19/39 ,  H04N19/172 ,  H04N19/182

    摘要： Techniques related to immersive video coding are discussed. Such techniques include encoding an immersive video bitstream by applying scalable video coding to some portions of the immersive video and multiple description coding to other portions of the immersive video and decoding and/or rendering the immersive video bitstream using selective scalable video coding and multiple description coding responsive to indicators in the bitstream.