AN APPARATUS, A METHOD AND A COMPUTER PROGRAM FOR VIDEO CODING AND DECODING
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United States of America
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Feb 13, 2025
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Nov 9, 2022
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Nov 9, 2022
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Abstract
A method comprising: obtaining an image block unit comprising samples in color channels of one or two chrominance channels and one luminance channel: reconstructing samples of said luminance channel of the image block unit: determining parameters for at least one prediction model for predicting samples of at least one color channel of the image block unit using a prediction model based on one or more reference samples in a neighboring block in current channel/frame, one or more reference samples in a block neighboring a co-located block in a reference channel/frame; and one or more reference samples inside the co-located block in the reference channel/frame; and determining said at least one prediction model as a polynomial and/or exponential prediction model.
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