# US 12,604,035 B2 · Method and apparatus for multi view video encoding and decoding, and method for transmitting bitstream generated by the multi view video encoding method

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- Number: US 12,604,035 B2
- Document ID: US12604035B2
- Status: Granted
- Kind: B2
- Application number: 18/354,983
- Filed: 2023-07-19
- Published: 2024-02-08
- Granted: 2026-04-14
- Earliest claimed: 2022-08-03
- Assignees: Research & Business Foundation Sungkyunkwan University
- Applicants: Research & Business Foundation Sungkyunkwan University
- Inventors: Eun Seok Ryu; Jong Beom Jeong; Soon Bin Lee
- Web page: https://patentgrep.com/patent/US12604035B2

## CPC

- H04N 19/597: specially adapted for multi-view video sequence encoding
- H04N 19/124: Quantisation
- H04N 19/136: Incoming video signal characteristics or properties
- H04N 19/172: the region being a picture, frame or field
- H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION

## Abstract

A multi-view video encoding/decoding method and apparatus is provided, and a method for transmitting a bitstream generated by the multi-view video encoding method is provided. The multi-view video encoding method includes generating first bitstreams for each of a plurality of quantization parameters (QPs) different from each other by encoding an atlas for a multi-view video in the quantization parameters, extracting second bitstreams for sub-regions in the atlas from the first bitstreams, and generating a third bitstream by merging, among the second bitstreams, second bitstreams with a predetermined bit rate.

## Claims

### Claim 1

A multi-view video encoding method, which is performed in a multi-view video encoding apparatus, the method comprising:
generating first bitstreams for each of a plurality of quantization parameters (QPs) different from each other by encoding an atlas for a multi-view video in the quantization parameters;
extracting second bitstreams for sub-regions in the atlas from the first bitstreams; and
generating a third bitstream by merging, among the second bitstreams, second bitstreams with a predetermined bit rate,
wherein the atlas is divided based on a size of a packing tile, and
wherein the size of the packing tile is determined based on a size of a basic view video of the multi-view video.

### Claim 2 (depends on 1)

The method of claim 1, wherein the sub-regions are tiles or sub-pictures.

### Claim 3 (depends on 1)

The method of claim 1, wherein the predetermined bit rate is determined based on a patch occupancy rate within the packing tile corresponding to the unit of packing.

### Claim 4 (depends on 1)

The method of claim 1, further comprising generating a fourth bitstream by encoding information on packing.

### Claim 5

A multi-view video decoding method, which is performed in a multi-view video decoding apparatus, the method comprising:
acquiring a third bitstream, in which an atlas for the multi-view video is encoded, and a fourth bitstream in which packing information is encoded;
generating the atlas by decoding the third bitstream; and
generating the multi-view video based on the atlas and the packing information,
wherein the atlas is divided based on a size of a packing tile, and
wherein the size of the packing tile is determined based on a size of a basic view video of the multi-view video.

### Claim 6

A multi-view video encoding apparatus comprising:
a memory; and
at least one processor,
wherein the at least one processor is configured to:
generate first bitstreams for each of a plurality of quantization parameters (QPs) different from each other by encoding an atlas divided into at least one sub-region in the quantization parameters,
extract second bitstreams for the sub-region from the first bitstreams, and
generate a third bitstream by merging, among the second bitstreams, second bitstreams with a predetermined bit rate,
wherein the atlas is divided based on a size of a packing tile, and
wherein the size of the packing tile is determined based on a size of a basic view video of the multi-view video.

### Claim 7

A method for transmitting a bitstream generated by a multi-view video encoding method, the method comprising:
generating first bitstreams for each of a plurality of quantization parameters (QPs) different from each other by encoding an atlas divided into at least one sub-region in the quantization parameters;
extracting second bitstreams for the sub-region from the first bitstreams; and
generating a third bitstream by merging, among the second bitstreams, second bitstreams with a predetermined bit rate,
wherein the atlas is divided based on a size of a packing tile, and
wherein the size of the packing tile is determined based on a size of a basic view video of the multi-view video.