Inter prediction refinement based on bi-directional optical flow (BIO)

HC Chuang, J Chen, YW Chen, X Li… - US Patent …, 2019 - Google Patents
(57) ABSTRACT A video decoder can be configured to determine that a block of video data
is encoded using a bi-directional inter predic tion mode; determine that the block of video …

Memory-bandwidth-efficient design for bi-directional optical flow (BIO)

HC Chuang, J Chen, K Zhang, X Li… - US Patent …, 2021 - Google Patents
(57) ABSTRACT A device for decoding video data is configured to perform interpolation
filtering using an N-tap filter to generate an interpolated search space for a first block of …

Concept of using one or multiple look up tables to store motion information of previously coded in order and use them to code following blocks

L Zhang, K Zhang, H Liu, Y Wang - US Patent 11,895,318, 2024 - Google Patents
Devices, systems and methods for coding video using one or more tables to store motion
information and process subsequent blocks are described. In one aspect, a video coding …

Concept of using one or multiple look up tables to store motion information of previously coded in order and use them to code following blocks

L Zhang, K Zhang, H Liu, Y Wang - US Patent 12,058,364, 2024 - Google Patents
Devices, systems and methods for coding video using one or more tables to store motion
information and processing subsequent blocks are described. In one aspect, a video coding …

Decoder-side motion vector refinement

CC Chen, WJ Chien, CH Hung… - US Patent 11,146,810, 2021 - Google Patents
A video coding device, such as a video encoder or video decoder, may determine that a
block of video data has at least one of a width less than 8 pixels, a height less than 8 pixels …

Interaction between look up table and shared merge list

L Zhang, K Zhang, H Liu, Y Wang - US Patent 11,140,383, 2021 - Google Patents
A method for video processing is provided to comprise: determining, whether to use a
temporal prediction for obtaining an adaptive loop filter for a conversion between a current …

Motion-compensation prediction based on bi-directional optical flow

Y Ye, X Xiu, Y He - US Patent 11,363,293, 2022 - Google Patents
A device may determine whether to enable or disable bi-directional optical flow (BIO) for a
current coding unit (CU)(eg, block and/or sub-block). Prediction information for the CU may …

Order of rounding and pruning in LAMVR

L Zhang, K Zhang, H Liu, Y Wang - US Patent 11,134,244, 2021 - Google Patents
Devices, systems and methods for encoding and decoding digital video historical
information such as tables containing coding candidates are described. In a representative …

Conditions for updating LUTS

L Zhang, K Zhang, H Liu, Y Wang - US Patent 11,159,817, 2021 - Google Patents
Devices, systems and methods for processing video are described. In a representative
aspect, a video processing method is provided to comprise: maintaining tables, wherein …

Usage of LUTs

L Zhang, K Zhang, H Liu, Y Wang - US Patent 11,153,559, 2021 - Google Patents
Devices, systems and methods for encoding and decoding digital video using historical
information containing coding candidates are described. In a representative aspect, a …