Context adaptive binary arithmetic coding method and device
AssigneesElectronics and Telecommunications Research Institute, Industry-University Cooperation Foundation Korea Aerospace University, Industry Academy Cooperation Foundation of Sejong University
InventorsJin Ho Lee, Jung Won Kang, Ha Hyun Lee, Sung Chang Lim, Hui Yong Kim, Jae Gon Kim, Do Hyeon Park, Yong Uk Yoon, Yung Lyul Lee
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Abstract
There is provided an video encoding/decoding method and apparatus. The video decoding method comprises acquiring a bitstream including a predetermined context element, performing at least one of a context model determination, a probability update, and a probability interval determination on the predetermined syntax element, and arithmetically decoding the predetermined syntax element on the basis of a result of the performance.
Claims18
A video decoding method, comprising:
- acquiring a bitstream including information for a syntax element of a current block;
- performing a context model determination on the syntax element;
- and
- arithmetically decoding the syntax element based on a result of the context model determination and the information for the syntax element,
- wherein the context model determination comprises to select a probability model for the syntax element,
- wherein the probability model for the syntax element is determined based on a prediction mode of an adjacent block of the current block, and
- wherein the probability model for the syntax element of the current block is determined based on whether the prediction mode of the adjacent block is a matrix weighted intra prediction mode.
A video encoding method, comprising:
- performing a context model determination on a syntax element of a current block;
- arithmetically encoding the syntax element based on a result of the context model determination to generate an arithmetically encoded syntax element;
- and
- generating a bitstream including the arithmetically encoded syntax element,
- wherein the context model determination comprises to select a probability model for the syntax element,
- wherein the probability model for the syntax element is determined based on a prediction mode of an adjacent block of the current block, and
- wherein the probability model for the syntax element of the current block is determined based on whether the prediction mode of the adjacent block is a matrix weighted intra prediction mode.
A non-transitory computer-readable medium storing a bitstream, the bitstream comprising:
- information for a syntax element of a current block;
- wherein a context model determination on the syntax element is performed;
- and
- the syntax element is arithmetically decoded based on a result of the context model determination and the information for the syntax element,
- wherein the context model determination comprises to select a probability model for the syntax element,
- wherein the probability model for the syntax element is determined based on a prediction mode of an adjacent block of the current block, and
- wherein the probability model for the syntax element of the current block is determined based on whether the prediction mode of the adjacent block is a matrix weighted intra prediction mode.
Dependencies are inferred from the claim text.