Patent ID: 11949896
Assignee: TENCENT AMERICA LLC
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 6:
7. A method for video encoding in an encoder, comprising:
determining a parameter that is equal to a minimum allowed chroma quaternary tree (QT) leaf node size in luma samples multiplied by a chroma vertical subsampling factor and divided by a chroma horizontal subsampling factor;
determining whether a QT split is disallowed for a chroma block in response to a block size of the chroma block in luma samples being less than or equal to the parameter;
in response to the QT split being disallowed for the chroma block, determining whether at least one of a binary tree split and a ternary tree split is disallowed for the chroma block; and
generating partition information indicating that a chroma coding tree structure in a dual tree is applied to the chroma block, the partition information further indicating the block size of the chroma block in luma samples, the chroma vertical subsampling factor, and the minimum allowed chroma QT leaf node size.