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    Non-separable secondary transform for video coding
    71.
    发明专利
    Non-separable secondary transform for video coding 未知

    公开(公告)号：AU2016332317A1

    公开(公告)日：2018-04-26

    申请号：AU2016332317

    申请日：2016-09-21

    Applicant: QUALCOMM INC

    Inventor： ZHAO XIN ,  CHEN JIANLE ,  SAID AMIR ,  KARCZEWICZ MARTA ,  SEREGIN VADIM

    IPC: H04N19/159 ,  H04N19/12 ,  H04N19/176 ,  H04N19/18 ,  H04N19/61

    Abstract: Techniques are described in which a decoder is configured to inverse quantize a first coefficient block and apply a first inverse transform to at least part of the inverse quantized first coefficient block to generate a second coefficient block. The first inverse transform is a non-separable transform. The decoder is further configured to apply a second inverse transform to the second coefficient block to generate a residual video block. The second inverse transform converts the second coefficient block from a frequency domain to a pixel domain. The decoder is further configured to form a decoded video block, wherein forming the decoded video block comprises summing the residual video block with one or more predictive blocks.

    SIGNALING OF QUANTIZATION INFORMATION IN NON-QUADTREE-ONLY PARTITIONED VIDEO CODING
    73.
    发明专利
    SIGNALING OF QUANTIZATION INFORMATION IN NON-QUADTREE-ONLY PARTITIONED VIDEO CODING 未知

    公开(公告)号：CA3026657A1

    公开(公告)日：2018-01-18

    申请号：CA3026657

    申请日：2017-07-12

    Applicant: QUALCOMM INC

    Inventor： LI XIANG ,  CHEN JIANLE ,  JOSHI RAJAN LAXMAN ,  SEREGIN VADIM ,  KARCZEWICZ MARTA

    IPC: H04N19/50 ,  H04N19/119 ,  H04N19/124 ,  H04N19/136 ,  H04N19/176 ,  H04N19/70

    Abstract: A video decoder receives local quantization information for a current quantization group. The video decoder determines a partitioning of a coding tree unit (CTU) of a picture of the video data into a plurality of coding units (CUs). Additionally, the video decoder derives, based at least in part on the local quantization information for the current quantization group, a quantization parameter. The current quantization group is defined as a group of successive CUs so that boundaries of the current quantization group must be boundaries of the CUs. The current quantization group may or may not be square. Additionally, the video decoder inverse quantizes, based on the quantization parameter, at least one transform coefficient of a current CU being in the current quantization group. The video decoder reconstructs, based on inverse quantized transform coefficients of the current CU, a coding block of the current CU.

    USING LUMA INFORMATION FOR CHROMA PREDICTION WITH SEPARATE LUMA-CHROMA FRAMEWORK IN VIDEO CODING
    75.
    发明专利
    USING LUMA INFORMATION FOR CHROMA PREDICTION WITH SEPARATE LUMA-CHROMA FRAMEWORK IN VIDEO CODING 未知

    公开(公告)号：CA3015156A1

    公开(公告)日：2017-09-28

    申请号：CA3015156

    申请日：2017-03-21

    Applicant: QUALCOMM INC

    Inventor： SEREGIN VADIM ,  ZHAO XIN ,  SAID AMIR ,  KARCZEWICZ MARTA

    IPC: H04N19/103 ,  H04N19/119 ,  H04N19/136 ,  H04N19/176 ,  H04N19/186

    Abstract: A method of decoding video data comprises receiving a bitstream of encoded video data, the encoded video data representing partitioned luma blocks and partitioned chroma blocks, wherein the chroma blocks are partitioned independently of the luma blocks, determining a respective coding mode corresponding to the respective partitioned luma blocks, decoding the respective partitioned luma blocks according to the determined respective coding modes, decoding a first syntax element indicating that the respective coding modes associated with the respective partitioned luma blocks are to be used for decoding a first partitioned chroma block, wherein the first partitioned chroma block is aligned with two or more partitioned luma blocks, determining a chroma coding mode for the first partitioned chroma block according to a function of the respective coding modes of the two or more partitioned luma blocks, and decoding the first partitioned chroma block in accordance with the determined chroma coding mode.

    PALETTE INDEX GROUPING FOR HIGH THROUGHPUT CABAC CODING
    76.
    发明专利
    PALETTE INDEX GROUPING FOR HIGH THROUGHPUT CABAC CODING 未知

    公开(公告)号：SG11201704982TA

    公开(公告)日：2017-08-30

    申请号：SG11201704982T

    申请日：2016-01-29

    Applicant: QUALCOMM INC

    Inventor： KARCZEWICZ MARTA ,  PU WEI ,  JOSHI RAJAN LAXMAN ,  SEREGIN VADIM

    IPC: H04N19/13 ,  H04N19/70 ,  H04N19/42 ,  H04N19/463 ,  H04N19/593

    Abstract: In an example, a method of decoding video data may include receiving a palette mode encoded block of video data of a picture. The method may include receiving encoded palette mode information for the palette mode encoded block of video data. The encoded palette mode information may include a plurality of instances of a first syntax element and a plurality of syntax elements that are different from the first syntax element. The method may include decoding, using bypass mode, the plurality of instances of the first syntax element before decoding the plurality of syntax elements that are different from the first syntax element using context mode. The method may include decoding, using context mode, the plurality of syntax elements that are different from the first syntax element after decoding the plurality of instances of the first syntax element using bypass mode.

    Palette mode coding for video coding
    79.
    发明专利
    Palette mode coding for video coding 未知

    公开(公告)号：AU2016211797A1

    公开(公告)日：2017-07-13

    申请号：AU2016211797

    申请日：2016-01-25

    Applicant: QUALCOMM INC

    Inventor： PU WEI ,  KARCZEWICZ MARTA ,  JOSHI RAJAN LAXMAN ,  ZOU FENG ,  SEREGIN VADIM

    IPC: H04N19/176 ,  H04N19/196 ,  H04N19/593

    Abstract: Receiving a plurality of syntax elements that are indicative of a palette that was used to encode a block of video data, the plurality of syntax elements including a first syntax element that indicates a number of palette values for the palette that are explicitly signaled in the encoded video bitstream, wherein the first syntax element is encoded using one or more Golomb codes such that the length of the encoded first syntax element is less than or equal to a predetermined maximum number of bits, decoding the plurality of syntax elements, including decoding the first syntax element using the one or more Golomb codes, reconstructing the palette based on the decoded plurality of syntax elements, and decoding the block of video data using the reconstructed palette.

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