Non-separable secondary transform for video coding

X Zhao, J Chen, A Said, M Karczewicz… - US Patent …, 2019 - Google Patents
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 …

Non-separable secondary transform for video coding with reorganizing

X Zhao, J Chen, A Said, M Karczewicz… - US Patent …, 2020 - Google Patents
Techniques are described in which a decoder is configured to reorganize a first 2-
dimensional coefficient block as a first 1-dimensional coefficient vector according to a …

Flexible transform tree structure in video coding

L Zhang, P Chao, G Jin, J Chen, WJ Chien, X Zhao… - 2018 - Google Patents
EP3381186A1 - Flexible transform tree structure in video coding - Google Patents
EP3381186A1 - Flexible transform tree structure in video coding - Google Patents Flexible …

Neighbor based signaling of intra prediction modes

V Seregin, X Zhao, A Said, M Karczewicz… - US Patent …, 2020 - Google Patents
(57) ABSTRACT A device for coding video data is configured to determine that a current
block of video data is coded using an intra prediction mode; add an intra prediction mode of …

Primary transform and secondary transform in video coding

CT Hsieh, V Seregin, X Zhao, A Said… - US Patent …, 2021 - Google Patents
A video coding device (eg, a video encoder or a video decoder) is configured to perform
various transformations on video data. The video coding device applies a primary transform …

Modification of transform coefficients for non-square transform units in video coding

L Zhang, X Li, J Chen, WJ Chien, X Zhao… - US Patent …, 2019 - Google Patents
As part of a process of encoding video data, a video encoder applies a transform to a non-
square residual block to gen erate a block of transform coefficients. Furthermore, the video …

Constrained block-level optimization and signaling for video coding tools

X Zhao, V Seregin, RL Joshi, A Said, X Li… - US Patent …, 2020 - Google Patents
An example device for decoding encoded video data includes storage media and
processing circuitry. The storage media are configured a portion of the encoded video data …

Method and apparatus of adaptive multiple transforms for video coding

H Huang - US Patent 10,750,181, 2020 - Google Patents
A method and apparatus for video encoding or decoding performed by a video encoder or a
video decoder incorporating advanced multiple transform (AMT) are disclosed. According to …

Variable number of intra modes for video coding

V Seregin, N Hu, WJ Chien, M Karczewicz… - US Patent …, 2019 - Google Patents
A video coder determines a first block of the video data is intra mode coded; based on a first
height and the first width of the first block, identifies a group of N available intra prediction …

Coding adaptive multiple transform information for video coding

HE Egilmez, YH Chao, A Said, V Seregin… - US Patent …, 2021 - Google Patents
An example device for decoding video data includes a memory configured to store video
data; and a processor implemented in circuitry and configured to decode a trun cated unary …