Title:
IMAGE DATA ENCODING/DECODING METHOD AND DEVICE
Document Type and Number:
Japanese Patent JP2023040178
Kind Code:
A
Abstract:
To provide an image data encoding/decoding method and device for a 360-degree image.SOLUTION: A decoding method includes steps of: receiving a bitstream in which a 360-degree image is encoded; referring to syntactic information obtained from the received bitstream to generate a prediction image; combining the generated prediction image with a residual image obtained by inversely quantizing and inversely transforming the bitstream to obtain a decoded image; reconstructing the decoded image into a 360-degree image in a projection format; obtaining a motion vector candidate group including motion vectors of a block adjacent to a current block to be decoded from motion information; deriving a prediction motion vector from the motion vector candidate group based on selection information extracted from the motion information; and using a final motion vector derived by adding the prediction motion vector to a differential motion vector extracted from the motion information.SELECTED DRAWING: None
Inventors:
KIM, KI BAEK
Application Number:
JP2023001731A
Publication Date:
March 22, 2023
Filing Date:
January 10, 2023
Export Citation:
Assignee:
B1 INSTITUTE OF IMAGE TECHNOLOGY, INC.
International Classes:
H04N19/597; H04N19/52; H04N19/70
Domestic Patent References:
| JP2015521442A | 2015-07-27 | |||
| JP2022000954A | 2022-01-04 |
Foreign References:
| US20060034374A1 | 2006-02-16 | |||
| US20160142697A1 | 2016-05-19 |
Attorney, Agent or Firm:
Miyajima Manabu
Takeshi Sekine
Akira Akaoka
Daigo Sannami
Takeshi Sekine
Akira Akaoka
Daigo Sannami
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