Patent ID: 11909987
Assignee: TENCENT AMERICA LLC
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A method for controlling block intra prediction for an encoder, comprising:
obtaining a video bitstream;
encoding the video bitstream with prediction information of a current coding unit (CU) in a segment of a current picture, comprising:
upon determining that the segment has a single tree structure indicating a same partitioning structure for both luma and chroma components of the segment, and that a prediction type of a chroma coding block (CB) of the current CU is intra prediction, including the prediction type of the chroma CB of the current CU in the prediction information, wherein when block area size of the chroma CB is smaller than or equal to a threshold T1, T1 being a positive integer, a luma component of the current CU is allowed to be sub-partitioned into multiple prediction units (PUs) for intra prediction, and a chroma component of the current CU only has one PU, a PU being a basic unit for prediction; and

outputting the encoded video bitstream, wherein a width of any reconstructed chroma CB intra-predicted from the encoded video bitstream is greater than 2.