KR-20260068080-A - Video encoding/decoding method, method for transmitting a bitstream, and recording medium storing a bitstream

Abstract

A method for video encoding/decoding, a method for transmitting a bitstream, and a computer-readable recording medium for storing a bitstream are provided. A video decoding method according to the present disclosure comprises the steps of acquiring a source picture timing information (SPTI) SEI (Supplemental Enhancement Information) message and restoring an image based on the SPTI SEI message, wherein the SPTI SEI message may include information regarding source picture timing for a picture associated with the SEI.

Inventors

• 탄헨드리
• 남정학
• 임재현
• 김승환

Assignees

• 엘지전자 주식회사

Dates

Publication Date

20260513

Application Date

20241002

Priority Date

20231004

Claims (11)

1. In a video decoding method, A step of acquiring SPTI (source picture timing information) SEI (Supplemental Enhancement Information) messages; and The method includes the step of restoring an image based on the above SPTI SEI message; A video decoding method in which the above SPTI SEI message includes information about source picture timing for a picture associated with the SEI.
2. In Article 1, A video decoding method in which the above source picture timing is derived based on an anchor picture.
3. In Article 2, A video decoding method in which the value of the temporal identifier of the above anchor picture is 0.
4. In Article 2, A video decoding method in which the above anchor picture is restricted not to belong to a synthesized temporal layer.
5. In Article 2, A video decoding method in which the above anchor picture is included in the same access unit as the access unit containing the above SPTI SEI message.
6. In Article 2, A video decoding method in which the source picture timing is derived for a specific picture based on the order relative to the anchor picture.
7. In a video encoding method, Step of determining SPTI (source picture timing information) SEI (Supplemental Enhancement Information) messages; and The method includes the step of encoding a bitstream containing the above SPTI SEI message; wherein A video encoding method in which the above SPTI SEI message includes information about source picture timing for a picture associated with the SEI.
8. In Article 7, A video encoding method in which the above source picture timing is derived based on an anchor picture.
9. In Article 8, A video encoding method in which the value of the temporal identifier of the above anchor picture is 0.
10. In a non-transient computer-readable medium comprising a bitstream generated by an image encoding method, the image encoding method comprises: Step of determining SPTI (source picture timing information) SEI (Supplemental Enhancement Information) messages; and The method includes the step of encoding a bitstream containing the above SPTI SEI message; wherein A medium in which the above SPTI SEI message contains information about source picture timing for a picture associated with the SEI.
11. A method for transmitting a bitstream generated by a video encoding method, The step of transmitting the above nonstream; comprising, The above image encoding method is, Step of determining SPTI (source picture timing information) SEI (Supplemental Enhancement Information) messages; and The method includes the step of encoding a bitstream containing the above SPTI SEI message; wherein A method in which the above SPTI SEI message includes information about source picture timing for a picture associated with the SEI.

Description

Video encoding/decoding method, method for transmitting a bitstream, and a recording medium storing a bitstream Video encoding/decoding method, method for transmitting a bitstream, and a recording medium storing a bitstream The present disclosure relates to a video encoding/decoding method, a method for transmitting a bitstream, and a recording medium storing a bitstream, wherein the video encoding/decoding method, a method for transmitting a bitstream, and a recording medium storing a bitstream are related to source picture timing. Recently, the demand for high-resolution, high-quality video, such as HD (High Definition) and UHD (Ultra High Definition), has been increasing across various fields. As video data becomes higher in resolution and quality, the relative amount of information or bits transmitted increases compared to conventional video data. This increase in transmitted information or bits leads to higher transmission and storage costs. Accordingly, high-efficiency video compression technology is required to effectively transmit, store, and play back high-resolution, high-quality video information. FIG. 1 is a schematic diagram illustrating a video coding system to which an embodiment according to the present disclosure can be applied. FIG. 2 is a schematic diagram showing an image encoding device to which an embodiment according to the present disclosure can be applied. FIG. 3 is a schematic diagram showing an image decoding device to which an embodiment according to the present disclosure can be applied. Figure 4 is a diagram illustrating an interleaved method for inducing a luma channel. FIG. 5 is a flowchart illustrating an image decoding method to which an embodiment according to the present disclosure can be applied. FIG. 6 is a flowchart illustrating an image encoding method to which an embodiment according to the present disclosure can be applied. FIG. 7 is a drawing illustrating an exemplary content streaming system to which an embodiment according to the present disclosure can be applied. Hereinafter, embodiments of the present disclosure are described in detail with reference to the attached drawings so that those skilled in the art can easily implement them. However, the present disclosure may be embodied in various different forms and is not limited to the embodiments described herein. In describing the embodiments of the present disclosure, detailed descriptions of known configurations or functions are omitted if it is determined that such descriptions could obscure the essence of the present disclosure. Additionally, parts of the drawings unrelated to the description of the present disclosure have been omitted, and similar parts are denoted by similar reference numerals. In the present disclosure, when a component is described as being "connected," "combined," or "joined" with another component, this may include not only a direct connection but also an indirect connection in which another component exists in between. Furthermore, when a component is described as "comprising" or "having" another component, this means that, unless specifically stated otherwise, it does not exclude the other component but may include an additional component. In the present disclosure, terms such as first, second, etc. are used solely for the purpose of distinguishing one component from another and do not limit the order or importance of the components unless specifically stated otherwise. Accordingly, within the scope of the present disclosure, a first component in one embodiment may be referred to as a second component in another embodiment, and likewise, a second component in one embodiment may be referred to as a first component in another embodiment. In this disclosure, distinct components are intended to clearly describe their respective features and do not imply that the components are separate. That is, multiple components may be integrated to form a single hardware or software unit, or a single component may be distributed to form multiple hardware or software units. Accordingly, such integrated or distributed embodiments are included within the scope of this disclosure, unless otherwise noted. In the present disclosure, the components described in various embodiments do not necessarily mean essential components, and some may be optional components. Accordingly, embodiments consisting of a subset of the components described in one embodiment are also included within the scope of the present disclosure. Furthermore, embodiments including additional components in addition to the components described in various embodiments are also included within the scope of the present disclosure. The present disclosure relates to the encoding and decoding of images, and the terms used in the present disclosure may have the ordinary meanings commonly used in the technical field to which the present disclosure belongs, unless newly defined in the present disclosure. In the present disclosure, "picture" generall