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    Method and apparatus for decoding a received set of encoded data
    2.
    发明授权
    Method and apparatus for decoding a received set of encoded data 有权

    公开(公告)号：US11259037B2

    公开(公告)日：2022-02-22

    申请号：US16954050

    申请日：2018-12-06

    Applicant: V-NOVA INTERNATIONAL LIMITED

    Inventor： Ivan Makeev ,  Balázs Keszthelyi ,  Stergios Poularakis ,  Michele Sanna ,  Robert Ettinger

    IPC: H04N19/436 ,  H04N19/119 ,  H04N19/167 ,  H04N19/176 ,  H04N19/30 ,  H04N19/46 ,  H04N19/96 ,  H04N19/129 ,  H04N19/44 ,  H04N19/182 ,  H04N19/91

    Abstract: A method of decoding a received set of encoded data representing information that has been compressed, wherein the encoded data set is divided into a hierarchy of subsets, is provided. The method comprises: obtaining, from at least one first subset, a respective set of offset values; and decoding a plurality of second subsets, each comprising a data structure of metadata and data, to derive a series of data values, wherein each second subset corresponds to a region of the information that has been compressed. Each offset value is associated with a second subset and indicates a relative position within the encoded data set that corresponds to the earliest element of the associated second subset with respect to the position within the encoded data set that corresponds to an element of another subset of the hierarchy of subsets. The decoding the plurality of second subsets includes identifying for each second subset, based on the set of offset values, the position within the encoded data that corresponds to the earliest element of the second subset. The method further comprises reconstructing the information that has been compressed from the data values.

    Motion compensation techniques for video
    4.
    发明授权
    Motion compensation techniques for video 有权

    公开(公告)号：US11303916B2

    公开(公告)日：2022-04-12

    申请号：US16467912

    申请日：2017-12-12

    Applicant: V-NOVA INTERNATIONAL LIMITED

    Inventor： Ivan Makeev ,  Balázs Keszthelyi ,  Stergios Poularakis ,  Michele Sanna ,  Robert Ettinger

    IPC: H04N19/51 ,  H04N19/172 ,  H04N19/176 ,  H04N19/182 ,  H04N19/593

    Abstract: Encoding a video data stream comprising a first and second frame of video data, encoding comprising the steps of: obtaining motion prediction data for a plurality of pixels, the motion prediction data indicative of the predicted relative motion of the plurality of pixels between the first and second frames of video data; obtaining a data mask comprising data indicative of relative weights to be applied for predicting pixels for the second frame; determining update data to define a relative difference between a plurality of pixels in the first frame and a corresponding plurality of pixels in the second frame, wherein said update data is based on a weighted scaling of the motion prediction data and the second frame of video data, said weighted scaling based on the data mask; and encoding the video data stream comprising at least the first frame of video data and the update data.

    Processing signal data using an upsampling adjuster
    8.
    发明授权
    Processing signal data using an upsampling adjuster 有权

    公开(公告)号：US11375198B2

    公开(公告)日：2022-06-28

    申请号：US16769801

    申请日：2018-12-06

    Applicant: V-NOVA INTERNATIONAL LIMITED

    Inventor： Ivan Makeev ,  Michele Sanna ,  Balázs Keszthelyi

    IPC: H04N19/132 ,  H04N19/136 ,  G06N3/04 ,  G06N3/08

    Abstract: Signal data is processed at an encoder device. A representation of a signal at a first level of quality is obtained. The representation at the first level is upsampled using an upsampler in the encoder device to derive a preliminary representation of the signal at a second, higher level of quality. Adjustment data is derived using the representation at the first level as an input to an upsampling adjuster arranged in parallel with the upsampler in the encoder device. The adjustment data is useable by the encoder device to adjust the preliminary representation. The preliminary representation and the adjustment data are used to derive an adjusted representation of the signal at the second level. Residual data useable by a decoder device is derived, using the adjusted representation, to reconstruct a reference representation of the signal at the second level using the adjusted representation.

    Method and apparatus for decoding a received set of encoded data
    9.
    发明授权
    Method and apparatus for decoding a received set of encoded data 有权

    公开(公告)号：US11089316B2

    公开(公告)日：2021-08-10

    申请号：US16770229

    申请日：2018-12-06

    Applicant: V-NOVA INTERNATIONAL LIMITED

    Inventor： Ivan Makeev ,  Balázs Keszthelyi ,  Stergios Poularakis ,  Michele Sanna ,  Robert Ettinger

    IPC: H04N19/436 ,  H04N19/119 ,  H04N19/129 ,  H04N19/167 ,  H04N19/176 ,  H04N19/30 ,  H04N19/46 ,  H04N19/96

    Abstract: A method of decoding a received set of encoded data is provided. The set of encoded data represents information that comprises a plurality of data elements having values within a range of values and that has been compressed by way of entropy encoding. The method comprises: receiving data comprising the set of encoded data and a set of banded distribution data, wherein the set of banded distribution data comprises one or more pairs of values, each pair comprising a sub-range value indicating a respective sub range of the range of values and a probability value representing a probability of a data element of the plurality of data elements having a value within the respective sub-range; and reconstructing the information that has been compressed, by way of performing entropy decoding, based upon a probability distribution defined by the set of banded distribution data, upon the set of encoded data. A method of compressing information comprising a plurality of data elements having values within a range of values so as to obtain a set of encoded data is also provided.

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