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US 12,010,311 B2Granted
Method for decoding image and apparatus therefor
AssigneeLG Electronics Inc.
InventorsSeethal Paluri, Seunghwan Kim, Jie Zhao
Life of this patent
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Abstract
A method for decoding an image performed by a decoding apparatus, according to the present document, comprises the steps of: obtaining image information; and generating a reconstructed picture on the basis of the image information.
Claims8
An image decoding method, performed by a decoding apparatus, the method comprising:
- obtaining image information;
- and
- generating a reconstructed picture based on the image information,
- wherein the obtaining the image information comprises:
- obtaining a flag representing whether one chroma quantization parameter table is applied or not;
- and
- obtaining at least one chroma quantization parameter table based on the flag,
- wherein the flag equal to 0 represents that a first chroma quantization parameter table for a Cb component, a second chroma quantization parameter table for a Cr component, and a third chroma quantization parameter table for a joint CbCr component are signaled.
5 more elements
An image encoding method, performed by an encoding apparatus, the method comprising:
- encoding image information;
- and
- generating a bitstream including the image information,
- wherein encoding the image information comprises:
- generating a flag representing whether one chroma quantization parameter table is applied or not;
- generating at least one chroma quantization parameter table based on the flag;
- and
- encoding the at least one chroma quantization parameter table and the flag,
- wherein the flag equal to 0 represents that a first chroma quantization parameter table for a Cb component, a second chroma quantization parameter table for a Cr component, and a third chroma quantization parameter table for a joint CbCr component are signaled.
6 more elements
A transmission method of data for image, the method comprising:
- obtaining a bitstream of image information including a flag and at least one chroma quantization parameter table;
- and
- transmitting the data including the bitstream of the image information including the flag and the at least one chroma quantization parameter table,
- wherein the flag represents whether one chroma quantization parameter table is applied or not,
- wherein the at least one chroma quantization parameter table is generated based on the flag, and
- wherein the flag equal to 0 represents that a first chroma quantization parameter table for a Cb component, a second chroma quantization parameter table for a Cr component, and a third chroma quantization parameter table for a joint CbCr component are signaled.
3 more elements
Dependencies are inferred from the claim text.