Invention Grant
- Patent Title: Method and apparatus for video coding
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Application No.: US18121670Application Date: 2023-03-15
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Publication No.: US11889086B2Publication Date: 2024-01-30
- Inventor: Guichun Li , Xiang Li , Xiaozhong Xu , Shan Liu
- Applicant: TENCENT AMERICA LLC
- Applicant Address: US CA Palo Alto
- Assignee: TENCENT AMERICA LLC
- Current Assignee: TENCENT AMERICA LLC
- Current Assignee Address: US CA Palo Alto
- Agency: Crowell & Moring LLP
- Main IPC: H04N19/159
- IPC: H04N19/159 ; H04N19/176 ; H04N19/52 ; H04N19/172 ; H04N19/117 ; H04N19/174 ; H04N19/105 ; H04N19/132 ; H04N19/46 ; H04N19/70

Abstract:
An apparatus for video decoding includes processing circuitry. The circuitry can be configured to determine whether to apply the PROF to an affine coded block, and responsive to a determination to apply the PROF to the affine coded block, perform a PROF process. For example, during the PROF process, a prediction sample I(i,j) at a sample location (i,j) in the affine coded block can be generated. Spatial gradients g_x (i,j) and g_y (i,j) at the sample location (i,j) in the affine coded block can be generate. A prediction refinement ΔI(i,j) based on the spatial gradients g_x (i,j) and g_y (i,j) can be generated. The prediction refinement ΔI(i,j) can added to the prediction sample I(i,j) to generate a refined prediction sample. The PROF for affine prediction can be enabled according to a syntax element received at the decoder, or can be enabled by default.
Public/Granted literature
- US20230224478A1 METHOD AND APPARATUS FOR VIDEO CODING Public/Granted day:2023-07-13
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