Method and apparatus for reconstructing 360-degree image according to projection format
AssigneeB1 Institute of Image Technology, Inc.
InventorKi Baek KIM
Life of this patent
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Abstract
Disclosed are methods and apparatuses for image data encoding/decoding. A method for decoding a 360-degree image includes the steps of: receiving a bitstream obtained by encoding a 360-degree image; generating a prediction image by making reference to syntax information obtained from the received bitstream; adding the generated prediction image to a residual image obtained by dequantizing and inverse-transforming the bitstream, so as to obtain a decoded image; and reconstructing the decoded image into a 360-degree image according to a projection format. Therefore, the performance of image data compression can be improved.
Claims7
An image decoding method, comprising:
- obtaining, from a bitstream, rearrangement information related to rearranging sub-regions in a picture;
- and
- rearranging the sub-regions based on the rearrangement information,
- wherein the rearrangement information includes rearrangement type information indicating a rearrangement type, and
- wherein the bitstream includes projection information for mapping the picture to a three-dimensional coordinate system.
An image encoding method, comprising:
- encoding rearrangement information related to rearranging sub-regions in a picture;
- encoding projection information for mapping the picture to a three-dimensional coordinate system;
- and
- generating a bitstream comprising the rearrangement information and the projection information,
- wherein the rearrangement information includes rearrangement type information indicating a rearrangement type.
A method for transmitting a bitstream, comprising:
- encoding rearrangement information related to rearranging sub-regions in a picture;
- encoding projection information for mapping the picture to a three-dimensional coordinate system;
- and
- generating the bitstream comprising the rearrangement information and the projection information;
- and
- transmitting the bitstream,
- wherein the rearrangement information includes rearrangement type information indicating a rearrangement type.
Dependencies are inferred from the claim text.