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    PERIODIC INTRA REFRESH PATTERN FOR VIDEO ENCODING
    53.
    发明公开
    PERIODIC INTRA REFRESH PATTERN FOR VIDEO ENCODING 审中-公开

    公开(公告)号：EP3809700A1

    公开(公告)日：2021-04-21

    申请号：EP19203656.4

    申请日：2019-10-16

    申请人： Axis AB

    发明人： EDPALM, Viktor

    IPC分类号： H04N19/107 ,  H04N19/114 ,  H04N19/137 ,  H04N19/172

    摘要： A video encoding method for encoding a series of images of original video data into an encoded video stream is disclosed. The video encoding method comprises setting a periodic intra refresh pattern for the encoding of the series of images of original video data; setting a number of delta frames (16) to be added between consecutive intra refresh frames (10) of the periodic intra refresh pattern, thereby adjusting the intra refresh periodicity of the encoded video stream; and encoding the series of images of original video data into the encoded video stream using the set periodic intra refresh pattern and the set number of delta frames (16) to be added between consecutive intra refresh frames (10). During the encoding, a current intra refresh frame (10) is set to directly refer to a previous intra refresh frame (10). During the encoding, each delta frame (16) added in between two consecutive intra refresh frames (10) is set to only refer to a previous one of the two consecutive intra refresh frames (10).

    METHOD AND SYSTEM FOR OPTIMIZED ENCODING
    56.
    发明公开
    METHOD AND SYSTEM FOR OPTIMIZED ENCODING 审中-公开

    公开(公告)号：EP3633991A1

    公开(公告)日：2020-04-08

    申请号：EP19207493.8

    申请日：2011-12-29

    申请人： Swisscom AG

    发明人： Marti, Urs-Viktor ,  Schlauss, Denis ,  Hohl, Lukas ,  Herrmann, Beat

    IPC分类号： H04N19/114 ,  H04N19/105 ,  H04N19/136 ,  H04N19/172 ,  H04N19/50 ,  H04N19/88

    摘要： A method and system are described for preparing a batch 15 of data sets 1-11 for a batch processing using a predetermined correlation encoding operation. In a first step, the batch 15 of data sets 1-15 is analysed to determine a plurality of correlation parameters 22 representing degrees of correlation between member data sets 1-11 of said batch 15 of data sets 1-11. In a second step, the correlation parameters 22 are used to generate an optimized correlation dependency graph 16 of the member sets 1-11 for performing the predetermined correlation encoding operation. By optimizing the correlation dependencies between data sets for subsequent processing, e.g. data compression, of the data sets, the advantages of correlation encoding can be used, even for data sets which appear a priori to be unordered and only weakly correlated.

    PROGRESSIVE I-SLICE REFERENCE FOR PACKET LOSS RESILIENT VIDEO CODING
    58.
    发明公开
    PROGRESSIVE I-SLICE REFERENCE FOR PACKET LOSS RESILIENT VIDEO CODING 审中-公开

    公开(公告)号：EP3565246A1

    公开(公告)日：2019-11-06

    申请号：EP19160635.9

    申请日：2019-03-04

    申请人： Agora Lab, Inc.

    发明人： DAI, Wei ,  ZHONG, Sheng

    IPC分类号： H04N19/107 ,  H04N19/174 ,  H04N19/65 ,  H04N19/114

    摘要： A method for decoding a compressed video stream is disclosed. The method includes decoding, by a processor from the compressed video stream, a first picture and a second picture, each including multiple slices in the same pattern, in which the first picture includes a first I-slice decoded using intra-prediction, the second picture includes a second I-slice decoded using intra-prediction, and the first I-slice and the second I-slice are not co-located with each other; and decoding, using inter-prediction, a first P-slice of the current picture referencing the first I-slice, and a second P-slice of the current picture referencing the second I-slice, in which the first P-slice of the current picture is co-located with the first I-slice, and the second P-slice of the current picture is co-located with the second I-slice.