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    Sample-based angular intra-prediction in video coding
    61.
    发明授权
    Sample-based angular intra-prediction in video coding 有权

    公开(公告)号：US11228771B2

    公开(公告)日：2022-01-18

    申请号：US16838549

    申请日：2020-04-02

    Applicant: Texas Instruments Incorporated

    Inventor： Minhua Zhou

    IPC: H04N19/593 ,  H04N19/176 ,  H04N19/11 ,  H04N19/59 ,  H04N19/157

    Abstract: A method for processing a prediction unit (PU) to generate predicted samples is provided that includes computing predicted samples for samples of the PU using sample-based angular intra-prediction (SAP) when lossless coding is enabled for the PU, and computing predicted samples for the samples of the PU using block-based angular intra-prediction when lossless coding is not enabled for the PU. Computation of the predicted using SAP includes determining an intra-prediction angle for the PU, and computing a predicted sample for each sample of the samples in the PU based on linear interpolation of two reference samples adjacent to the sample, wherein the two reference samples are selected according to the intra-prediction angle.

    TEMPORAL MOTION DATA CANDIDATE DERIVATION IN VIDEO CODING
    62.
    发明申请
    TEMPORAL MOTION DATA CANDIDATE DERIVATION IN VIDEO CODING 有权

    公开(公告)号：US20220007009A1

    公开(公告)日：2022-01-06

    申请号：US17477598

    申请日：2021-09-17

    Applicant: TEXAS INSTRUMENTS INCORPORATED

    Inventor： Minhua Zhou

    IPC: H04N19/105 ,  H04N19/167 ,  H04N19/44 ,  H04N19/593 ,  H04N19/96 ,  H04N19/109 ,  H04N19/52 ,  H04N19/463 ,  H04N19/176

    Abstract: A method for derivation of a temporal motion data (TMD) candidate for a prediction unit (PU) in video encoding or video decoding is provided. The derived TMD candidate is for inclusion in an inter-prediction candidate list for the PU. The method includes determining a primary TMD position relative to a co-located PU in a co-located largest coding unit (LCU), wherein the co-located PU is a block in a reference picture having a same size, shape, and coordinates as the PU, and selecting at least some motion data of a secondary TMD position as the TMD candidate when the primary TMD position is in a bottom neighboring LCU or in a bottom right neighboring LCU of the co-located LCU, wherein the secondary TMD position is determined relative to the co-located PU.

    Method and system for lossless coding mode in video coding
    65.
    发明授权
    Method and system for lossless coding mode in video coding 有权

    公开(公告)号：US11184623B2

    公开(公告)日：2021-11-23

    申请号：US13623087

    申请日：2012-09-19

    Applicant: Texas Instruments Incorporated

    Inventor： Minhua Zhou

    IPC: H04N19/103 ,  H04N19/167 ,  H04N19/117 ,  H04N19/172 ,  H04N19/174 ,  H04N19/176 ,  H04N19/70 ,  H04N19/436 ,  H04N19/157 ,  H04N19/124 ,  H04N19/61 ,  H04N19/82 ,  H04N19/12

    Abstract: A method for coding a video sequence is provided that includes encoding a portion of a picture in the video sequence in lossless coding mode, and signaling a lossless coding indicator in a compressed bit stream, wherein the lossless coding indicator corresponds to the portion of a picture and indicates whether or not the portion of the picture is losslessly coded. A method for decoding a compressed video bit stream is provided that includes determining that lossless coding mode is enabled, decoding a lossless coding indicator from the compressed video bit stream, wherein the lossless coding indicator corresponds to a portion of a picture in the compressed video bit stream and indicates whether or not the portion of the picture is losslessly coded, and decoding the portion of the picture in lossless coding mode when the lossless coding indicator indicates the portion of the picture is losslessly coded.

    INTER-PREDICTION CANDIDATE INDEX CODING INDEPENDENT OF INTER-PREDICTION CANDIDATE LIST CONSTRUCTION IN VIDEO CODING
    66.
    发明申请
    INTER-PREDICTION CANDIDATE INDEX CODING INDEPENDENT OF INTER-PREDICTION CANDIDATE LIST CONSTRUCTION IN VIDEO CODING 有权

    公开(公告)号：US20210250601A1

    公开(公告)日：2021-08-12

    申请号：US17243638

    申请日：2021-04-29

    Applicant: TEXAS INSTRUMENTS INCORPORATED

    Inventor： Minhua Zhou

    IPC: H04N19/463 ,  H04N19/109 ,  H04N19/50 ,  H04N19/625 ,  H04N19/176

    Abstract: Methods are provided for inter-prediction candidate index coding independent of the construction of the corresponding inter-prediction candidate list, i.e., a merging candidate list or an advanced motion vector predictor list. A maximum allowed number of inter-prediction candidates for an inter-prediction candidate list is used for encoding the inter-prediction candidate index in an encoded bit stream. The maximum allowed number may be pre-determined or may be selected by the encoder and encoded in the bit stream. A decoder may then decode the index using the maximum allowed number of inter-prediction candidates independent of the construction of the corresponding inter-prediction candidate list.

    Sub-pictures for pixel rate balancing on multi-core platforms
    69.
    发明授权
    Sub-pictures for pixel rate balancing on multi-core platforms 有权

    公开(公告)号：US10893284B2

    公开(公告)日：2021-01-12

    申请号：US16260225

    申请日：2019-01-29

    Applicant: Texas Instruments Incorporated

    Inventor： Minhua Zhou

    IPC: H04N19/436 ,  H04N19/513

    Abstract: A method for decoding a compressed video bit stream in a video decoder to recover a video sequence, the video decoder including a plurality of decoder processing cores is provided. The method includes determining that a picture is encoded in the compressed bit stream as a pre-determined number of independently encoded sub-pictures, and dispatching a first encoded sub-picture of the pre-determined number of sub-pictures to a first decoder processing core of the plurality of decoder processing cores and a second encoded sub-picture of the pre-determined number of sub-pictures to a second decoder processing core of the plurality of decoder processing cores, wherein the first encoded sub-picture and the second encoded sub-picture are independently decoded in parallel on the respective first and second decoder processing cores.

    PARSING FRIENDLY AND ERROR RESILIENT MERGE FLAG CODING IN VIDEO CODING
    70.
    发明申请
    PARSING FRIENDLY AND ERROR RESILIENT MERGE FLAG CODING IN VIDEO CODING 审中-公开

    公开(公告)号：US20200314431A1

    公开(公告)日：2020-10-01

    申请号：US16867786

    申请日：2020-05-06

    Applicant: TEXAS INSTRUMENTS INCORPORATED

    Inventor： Minhua Zhou

    IPC: H04N19/139 ,  H04N19/70 ,  H04N19/52 ,  H04N19/61 ,  H04N19/105 ,  H04N19/124 ,  H04N19/13 ,  H04N19/159 ,  H04N19/513 ,  H04N19/577

    Abstract: Methods and apparatus for parsing friendly and error resilient merge flag coding in video coding are provided. In some methods, in contrast to merging candidate list size dependent coding of the merge flag in the prior art, a merge flag is always encoded in the encoded bit stream for each inter-predicted prediction unit (PU) that is not encoded using skip mode. In some methods, in contrast to the prior art that allowed the merging candidate list to be empty, one or more zero motion vector merging candidates formatted according to the prediction type of the slice containing a PU are added to the merging candidate list if needed to ensure that the list is not empty and/or to ensure that the list contains a maximum number of merging candidates.

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