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US 11,778,237 B1Granted
Video or image coding based on signaling of scaling list data
AssigneeLG Electronics Inc.
InventorsSeethal Paluri, Seunghwan Kim, Jie Zhao
Life of this patent
Estimating the term…
Abstract
According to the disclosure of the present document, scaling list data delivered in an adaptation parameter set (APS) may be signaled through a hierarchical structure, and the amount of data that needs to be signaled for video/image coding may be reduced and implementation may be facilitated by placing limits on the scaling list data delivered in the APS.
Claims17
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 including residual information from a bitstream;
- derive quantized transform coefficients for a current block based on the residual information;
- derive transform coefficients by performing a dequantization process on the quantized transform coefficients based on scaling list data;
- derive residual samples based on the transform coefficients;
- and
- generate reconstruction samples based on the residual samples,
- wherein the image information includes an adaptation parameter set (APS) and header information, and
- wherein the APS includes APS ID information and APS type information, and
- wherein the scaling list data is included in the APS based on the APS type information, and
- wherein the header information includes APS ID information related to scaling list data, and
- wherein the APS including the scaling list data is specified based on the APS ID information related to the scaling list data included in the header information.
11 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:
- derive residual samples for a current block;
- derive transform coefficients by performing a transform process based on the residual samples;
- derive quantized transform coefficients by performing a quantization process on the transform coefficients;
- generate residual information based on the quantized transform coefficients;
- and
- encode image information including the residual information,
- wherein the image information includes an adaptation parameter set (APS) and header information,
- wherein the APS includes APS ID information and APS type information,
- wherein scaling list data for the quantized transform coefficients is included in the APS based on the APS type information,
- wherein the header information includes APS ID information related to scaling list data, and
- wherein the APS including the scaling list data is specified based on the APS ID information related to the scaling list data included in the header information.
11 more elements
An apparatus for transmitting data for an image, the apparatus comprising:
- at least one processor configured to obtain a bitstream for the image, wherein the bitstream is generated based on deriving residual samples for a current block, deriving transform coefficients by performing a transform process based on the residual samples, deriving quantized transform coefficients by performing a quantization process on the transform coefficients, generating residual information based on the quantized transform coefficients, encoding image information including the residual information;
- and
- a transmitter configured to transmit the data comprising the bitstream,
- wherein the image information includes an adaptation parameter set (APS) and header information,
- wherein the APS includes APS ID information and APS type information,
- wherein scaling list data for the quantized transform coefficients is included in the APS based on the APS type information,
- wherein the header information includes APS ID information related to scaling list data, and
- wherein the APS including the scaling list data is specified based on the APS ID information related to the scaling list data included in the header information.
5 more elements
Dependencies are inferred from the claim text.