Invention Application
- Patent Title: PREDICTION IMAGE GENERATION METHOD, IMAGE CODING METHOD, IMAGE DECODING METHOD, AND PREDICTION IMAGE GENERATION APPARATUS
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Application No.: US17558755Application Date: 2021-12-22
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Publication No.: US20220116641A1Publication Date: 2022-04-14
- Inventor: Satoshi YOSHIKAWA , Hisao SASAI , Kengo TERADA
- Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
- Applicant Address: JP Osaka
- Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
- Current Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
- Current Assignee Address: JP Osaka
- Priority: JP2014-231098 20141113
- Main IPC: H04N19/50
- IPC: H04N19/50

Abstract:
A decoder includes a memory and a processor coupled to the memory. The processor is configured to obtain first information from a bitstream, the first information indicating a number of first points in a current picture. The processor is also configured to determine second information provided for each of the first points based on the first information, the second information indicating a difference between a coordinate value of a first point and a coordinate value of a corresponding second point, the corresponding second point being included in a reference picture. The processor is further configured to generate a prediction image of a current block by performing an affine prediction according to the determined second information.
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