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    Offset type and coefficients signaling method for sample adaptive offset
    31.
    发明专利
    Offset type and coefficients signaling method for sample adaptive offset 未知

    公开(公告)号：AU2012253847B2

    公开(公告)日：2015-12-03

    申请号：AU2012253847

    申请日：2012-05-04

    Applicant: QUALCOMM INC

    Inventor： CHONG IN SUK ,  VAN DER AUWERA GEERT ,  KARCZEWICZ MARTA

    IPC: H04N19/61

    Abstract: This disclosure describes techniques for performing sample adaptive offset signaling and coding in a video coding process. Techniques of the disclosure include both a merge-based and prediction-based signaling process for sample adaptive offset information (i.e., offset values and offset type). The techniques includes determining offset information for a current partition, comparing the offset information of the current partition with offset information of one or more neighbor partitions, coding a merge instruction in the case that the offset information of one of the one or more neighbor partitions is the same as the offset information of the current partition, and coding one of a plurality of prediction instructions in the case that the offset information of the one or more neighbor partitions is not the same as the offset information of the current partition.

    Intra smoothing filter for video coding
    32.
    发明专利
    Intra smoothing filter for video coding 未知

    公开(公告)号：AU2011308653B2

    公开(公告)日：2015-11-19

    申请号：AU2011308653

    申请日：2011-09-30

    Applicant: QUALCOMM INC

    Inventor： VAN DER AUWERA GEERT ,  WANG XIANGLIN ,  COBAN MUHAMMED ZEYD ,  KARCZEWICZ MARTA ,  ZHENG YUNFEI

    IPC: H04N19/00 ,  H04N19/593

    Abstract: This disclosure relates to techniques for reducing the amount of additional data encoded with a block encoded using intra-predictive coding. Particularly, the techniques provide apparatus and methods of applying a smoothing filter to prediction samples used in intra-predictive coding. For example, in fixed mode-dependent intra- predictive coding, a video encoder may determine the type of smoothing filter applied to prediction samples based on block size and intra-prediction mode combination associated with the current block, where the combination is used to look up a filter in a first filter table. In adaptive mode-dependent intra-predictive coding, the encoder uses two filters, one from the first filter table and another from a second filter table, applies both filters, and determines which yields better results. When the second filter table filter yields better results, the encoder encodes a filtering indication. When a filter from the first filter table is used, no filtering indication is encoded.

    CHROMA SLICE-LEVEL QP OFFSET AND DEBLOCKING
    33.
    发明专利
    CHROMA SLICE-LEVEL QP OFFSET AND DEBLOCKING 未知

    公开(公告)号：PH12014502045B1

    公开(公告)日：2014-12-10

    申请号：PH12014502045

    申请日：2014-09-15

    Applicant: QUALCOMM INC

    Inventor： VAN DER AUWERA GEERT ,  WANG XIANGLIN ,  KARCZEWICZ MARTA

    IPC: H04N1/409 ,  H04N19/117 ,  H04N19/14 ,  H04N19/174 ,  H04N19/186 ,  H04N19/82 ,  H04N19/86

    Abstract: In one example, an apparatus for processing video data comprises a video coder configured to, for each of the one or more chrominance components, calculate a chrominance quantization parameter for a common edge between two blocks of video data based on a first luminance quantization parameter for the first block of video data, a second luminance quantization parameter for the second block of video data, and a chrominance quantization parameter offset value for the chrominance component. The video coder is further configured to determine a strength for a deblocking filter for the common edge based on the chrominance quantization parameter for the chrominance component, and apply the deblocking filter according to the determined strength to deblock the common edge.

    INTRA PCM (IPCM) AND LOSSLESS CODING MODE VIDEO DEBLOCKING
    34.
    发明专利
    INTRA PCM (IPCM) AND LOSSLESS CODING MODE VIDEO DEBLOCKING 未知

    公开(公告)号：CA2851806A1

    公开(公告)日：2013-04-25

    申请号：CA2851806

    申请日：2012-10-19

    Applicant: QUALCOMM INC

    Inventor： VAN DER AUWERA GEERT ,  KARCZEWICZ MARTA ,  WANG XIANGLIN

    IPC: H04N19/82 ,  H04N11/04 ,  H04N19/117 ,  H04N19/124 ,  H04N19/176 ,  H04N19/52 ,  H04N21/2383

    Abstract: Techniques for coding video data include coding a plurality of blocks of video data, wherein at least one block of the plurality of blocks of video data is coded using a coding mode that is one of an intra pulse code modulation (IPCM) coding mode and a lossless coding mode. In some examples, the lossless coding mode may use prediction. The techniques further include assigning a non-zero quantization parameter (QP) value for the at least one block coded using the coding mode. The techniques also include performing deblocking filtering on one or more of the plurality of blocks of video data based on the coding mode used to code the at least one block and the assigned non-zero QP value for the at least one block.

    Position dependent intra prediction combination with wide angle intra prediction
    35.
    发明专利
    Position dependent intra prediction combination with wide angle intra prediction 未知

    公开(公告)号：AU2019306205B2

    公开(公告)日：2023-04-13

    申请号：AU2019306205

    申请日：2019-07-15

    Applicant: QUALCOMM INC

    Inventor： VAN DER AUWERA GEERT ,  RAMASUBRAMONIAN ADARSH KRISHNAN ,  KARCZEWICZ MARTA

    IPC: H04N19/11 ,  H04N19/105 ,  H04N19/119 ,  H04N19/167 ,  H04N19/176 ,  H04N19/593

    Abstract: Techniques are described using Position Dependent Intra Prediction Combination (PDPC) with wide angle intra prediction. For example, a size of the current block of video data can be determined. Based on the size, a wide angle intra-prediction mode can be determined for the current block. A prediction block for the current block can be determined using the wide angle intra-prediction mode. A prediction sample from the prediction block can be modified to generate a modified prediction sample using PDPC, which can include determining one or more reference samples that are external to the current block based on the wide angle intra-prediction mode, and modifying the prediction sample to generate the modified prediction sample based on the determined one or more reference samples.

    Asignación de modulación del código de impulsos en el dominio residual cuantificado basado en bloques para la derivación del modo de intra predicción
    38.
    发明专利
    Asignación de modulación del código de impulsos en el dominio residual cuantificado basado en bloques para la derivación del modo de intra predicción 未知

    公开(公告)号：CL2021002762A1

    公开(公告)日：2022-07-08

    申请号：CL2021002762

    申请日：2021-10-21

    Applicant: QUALCOMM INC

    Inventor： KARCZEWICZ MARTA ,  VAN DER AUWERA GEERT ,  COBAN MUHAMMED ZEYD

    IPC: H04N19/11 ,  H04N19/157 ,  H04N19/176 ,  H04N19/70

    Abstract: Se describen técnicas para mejorar la codificación de video. Por ejemplo, se puede obtener un primer bloque de una imagen incluida en un flujo de bits de video codificado. Se puede determinar que un segundo bloque de la imagen está codificado (por ejemplo, codificado) utilizando un tipo de modo de modulación de código de impulsos de dominio residual cuantificado basado en bloques (BDPCM), como el modo BDPCM vertical o el modo BDPCM horizontal. En el caso de que el segundo bloque se codifique utilizando el modo BDPCM vertical, puede determinarse un modo de intra-predicción vertical para una lista de modo de intra-predicción para el primer bloque. El modo de intra-predicción vertical puede agregarse a la lista de modos de intrapredicción para el primer bloque. En el caso de que el segundo bloque se codifique utilizando el modo BDPCM horizontal, se puede determinar un modo de intra-predicción horizontal para la lista de modos de intra- predicción para el primer bloque y el modo de intra-predicción horizontal se puede agregar a la lista de modos de intra-predicción.

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