公开(公告)号：US20210014537A1

公开(公告)日：2021-01-14

申请号：US16921106

申请日：2020-07-06

Applicant: QUALCOMM Incorporated

Inventor： Nan HU ,  Vadim SEREGIN ,  Adarsh Krishnan RAMASUBRAMONIAN ,  Muhammed Zeyd COBAN ,  Marta KARCZEWICZ

IPC: H04N19/80 ,  H04N19/176 ,  H04N19/174 ,  H04N19/119 ,  H04N19/172

Abstract: Systems, methods, and media are provided for loop filtering across raster scan slices. One example includes obtaining data comprising one or more pictures, including obtaining a first block located in a first slice of one of the pictures. The example then includes determining a second block is located in a second slice of the picture, the second block including one or more pixels for use in performing loop filtering of a pixel of the first block, and determining that loop filtering across slice boundaries is disabled. Based on this disabling, the example determines that the one or more pixels of the second block are unavailable for performing loop filtering of the pixel of the first block, and duplicates at least one pixel of the first block or at least one pixel of an additional block of the first slice for performing loop filtering of the pixel of the first block.

公开(公告)号：US20200213589A1

公开(公告)日：2020-07-02

申请号：US16733033

申请日：2020-01-02

Applicant: QUALCOMM Incorporated

Inventor： Nikolay Mikhaylovich SHLYAKHOV ,  Dmytro RUSANOVSKYY ,  Nan HU ,  Hilmi Enes EGILMEZ ,  Vadim SEREGIN ,  Marta KARCZEWICZ

IPC: H04N19/117 ,  H04N19/82 ,  H04N19/177 ,  H04N19/577

Abstract: This disclosure describes techniques for managing filter information for use with adaptive loop filter or any other in-loop filter in video encoder or decoder. In particular, a temporal buffer is managed to store filter coefficients for pictures of a group of pictures based on whether a picture is the starting point the group of pictures.

公开(公告)号：US20210195183A1

公开(公告)日：2021-06-24

申请号：US17128005

申请日：2020-12-19

Applicant: Qualcomm Incorporated

Inventor： Nan HU ,  Vadim SEREGIN ,  Marta KARCZEWICZ

IPC: H04N19/117 ,  H04N19/82 ,  H04N19/46 ,  H04N19/186 ,  H04N19/176

Abstract: A device capable of compressing video data includes a memory configured to store a luma new filter value, a chroma new filter value, a cross component Cb new filter value, and a cross component Cr new filter value. The device may also include one or more processors, coupled to the memory, configured to set a joint constraint on the luma new filter value, the chroma new filter value, the cross component Cb new filter value, and the cross component Cr new filter value, such that each of the luma new filter value, the chroma new filter value, the cross component Cb new filter value, and the cross component Cr new filter value are not disabled in a unit associated with an adaptation parameter set having a first adaptation parameter set identification (APS ID).