Adaptation of scan order for entropy coding
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United States of America Patent
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Feb 27, 2024
Grant Date -
Apr 20, 2023
app pub date -
Dec 20, 2022
filing date -
Dec 20, 2022
priority date (Note) -
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Abstract
Decoding a current block includes decoding a subset of quantized transform coefficients of a quantized transform block using a first scan order. A second scan order is determined based on the subset of the quantized transform coefficients. Remaining quantized transform coefficients of the quantized transform block are decoded based on the second scan order. A context model for decoding an intra-prediction mode is determined based on at least the subset of the quantized transform coefficients. The intra-prediction mode is decoded based on the context model. The current block is obtained based on the quantized transform coefficients and the intra-prediction mode.
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