公开(公告)号：US11997298B2

公开(公告)日：2024-05-28

申请号：US17880396

申请日：2022-08-03

Applicant: QUALCOMM Incorporated

Inventor： Vikrant Mahajan ,  Sandeep Nellikatte Srivatsa ,  Ashish Mishra

IPC: H04N19/44 ,  H04N19/423 ,  H04N19/80

CPC classification number: H04N19/44 ,  H04N19/423 ,  H04N19/80

Abstract: Video decoding systems and techniques are described. A decoder reads first video data from a first block of a video frame. The decoder retrieves neighboring video data from a line buffer. The neighboring video data is from a neighboring block that neighbors the first block in the video frame. The decoder processes the first video data and the retrieved neighboring video data using a constrained directional enhancement filter (CDEF) to generate filtered first video data. The decoder upscales the filtered first video data using an upscaler to generate upscaled filtered first video data. The decoder upscales the retrieved neighboring video data using the upscaler to generate upscaled neighboring video data, for instance after generating the filtered first video data. The decoder processes the upscaled filtered first video data and the upscaled neighboring video data using a loop restoration (LR) filter to generate output video data.

公开(公告)号：US12120356B2

公开(公告)日：2024-10-15

申请号：US17875317

申请日：2022-07-27

Applicant: QUALCOMM Incorporated

Inventor： Vikrant Mahajan ,  Sandeep Nellikatte Srivatsa ,  Ashish Mishra ,  Lingfeng Li ,  Apoorva Nagarajan

IPC: H04N19/86 ,  H04N19/176

CPC classification number: H04N19/86 ,  H04N19/176

Abstract: Video decoding systems and techniques are described. The decoder applies a deblocking (DB) filter to the plurality of sub-blocks of a block of video data to generate a DB-filtered plurality of sub-blocks. The decoder applies the DB filter to one or more lines (e.g., columns) of pixels in an additional sub-block of the block to generate a DB-filtered portion of the additional sub-block. The one or more lines of pixels in the additional sub-block are filtered without filtering an entirety of the additional sub-block using the DB filter. The additional sub-block is adjacent to at least one of the plurality of sub-blocks. The decoder applies a constrained directional enhancement filter (CDEF) to the DB-filtered plurality of sub-blocks and the DB-filtered portion of the additional sub-block to generate a CDEF-filtered plurality of sub-blocks.

公开(公告)号：US20240214563A1

公开(公告)日：2024-06-27

申请号：US18069076

申请日：2022-12-20

Applicant: QUALCOMM Incorporated

Inventor： Vikrant Mahajan ,  Sandeep Nellikatte Srivatsa ,  Ashish Mishra ,  Apoorva Nagarajan ,  Divya Goswami

IPC: H04N19/117 ,  H04N19/176 ,  H04N19/30

CPC classification number: H04N19/117 ,  H04N19/176 ,  H04N19/30

Abstract: A device for upscale filtering video data includes one or more processors configured to generate a number of upscaled pixels that is an integer multiple of one half of a size of a filter used to upscale filter the video data. The device may then store the remaining pixels to be used to upscale filter a subsequent, right-neighboring block. In this manner, the device may avoid generating upscaled pixels that will result in being unaligned with the block and that may not be output due to being unaligned.