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US 2026/0303843 A1Published application
Sub-bitstream extraction-based image coding device and method for scalability
AssigneeLG Electronics Inc.
InventorHendry HENDRY
Life of this patent
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Abstract
According to embodiment(s) of the present document, multilayer-based coding can be performed. The multilayer-based coding can include a sub-bitstream extraction process. Inputs of the sub-bitstream extraction process can include a value related toa target OLS index and a value related to a highest temporal identifier.
Claims8
A decoding apparatus for image decoding, the decoding apparatus comprising:
- a memory;
- and
- at least one processor connected to the memory, the at least one processor configured to:
- obtain image information from a sub-bitstream;
- decode a picture being belonging to a layer included in a target output layer set (OLS) for a target OLS index and being related to a highest temporal identifier;
- and
- output the decoded picture,
- wherein the sub-bitstream is derived based on sub-bitstream extraction process for a bitstream,
- wherein inputs of the sub-bitstream extraction process includes a value related to the target OLS index and a value related to the highest temporal identifier,
- wherein the sub-bitstream includes a specific network abstraction layer (NAL) unit including information on both the target OLS index and the highest temporal identifier,
- wherein a value of the information on the target OLS index is set based on an input for the sub-bitstream extraction process and a value of the information on the highest temporal identifier is set based on the input for the sub-bitstream extraction process, and
- wherein, in response to a case where the image information includes an AU containing the specific NAL unit and not containing an access unit delimiter (AUD) NAL unit, the specific NAL unit is a first NAL unit in the AU.
9 more elements
An encoding apparatus for image encoding, the encoding apparatus comprising:
- a memory;
- and
- at least one processor connected to the memory, the at least one processor configured to:
- obtain an image;
- encode the image;
- and
- output a bitstream including image information based on the encoding;
- wherein the bitstream includes a specific network abstraction layer (NAL) unit including information on a target output layer set (OLS) index and information on a highest temporal identifier, and
- wherein, in response to a case where the image information includes an AU containing the specific NAL unit and not containing an access unit delimiter (AUD) NAL unit, the specific NAL unit is a first NAL unit in the AU.
6 more elements
An apparatus for transmitting data for image information, the apparatus comprising:
- at least one processor configured to:
- obtain a bitstream of the image information;
- and
- transmit the data comprising the bitstream of the image information,
- wherein the bitstream is generated based on obtaining an image, and encoding the image,
- wherein the bitstream includes a specific network abstraction layer (NAL) unit including information on a target output layer set (OLS) index and information on a highest temporal identifier, and
- wherein, in response to a case where the image information includes an AU containing the specific NAL unit and not containing an access unit delimiter (AUD) NAL unit, the specific NAL unit is a first NAL unit in the AU.
4 more elements
Dependencies are inferred from the claim text.