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US 11,895,338 B2Granted
Image coding method and device in image coding system
AssigneeLG Electronics Inc.
InventorsJungah Choi, Jaehyun Lim, Sunmi Yoo, Jangwon Choi, Seunghwan Kim
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Abstract
A method for decoding an image by a decoding device, according to the present document, comprises the steps of: acquiring image information; and generating a reconstructed picture on the basis of the image information.
Claims2
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;
- and
- generate a reconstructed picture based on the image information,
- wherein the obtaining the image information comprises:
- obtaining a residual coding flag;
- and
- obtaining syntax elements of a current block according to a residual coding syntax structure determined based on the residual coding flag,
- wherein the current block is a transform skip block,
- wherein syntax elements according to a regular residual coding syntax structure for the current block are obtained based on the residual coding flag representing that a transform skip residual coding syntax structure is not enabled,
- wherein the syntax elements according to the regular residual coding syntax structure include position information on a position of a last non-zero residual coefficient in a residual coefficient array of the current block.
10 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:
- encode image information;
- and
- generate a bitstream including the encoded image information,
- wherein the encoding the image information comprises:
- determining whether a transform skip residual coding syntax structure is enabled for a current block in a current slice;
- encoding syntax elements of the current block according to a residual coding syntax structure determined based on a result of the determination;
- and
- encoding a residual coding flag for whether the transform skip residual coding syntax structure is enabled for the current block in the current slice,
- wherein the current block is a transform skip block,
- wherein syntax elements according to a regular residual coding syntax structure for the current block are encoded based on a determination that the transform skip residual coding syntax structure is not enabled,
- wherein the syntax elements according to the regular residual coding syntax structure include position information on a position of a last non-zero residual coefficient in a residual coefficient array of the current block.
11 more elements
Dependencies are inferred from the claim text.