Picture decoding device, picture decoding method and picture decoding program
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United States of America Patent
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Mar 6, 2018
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app pub date -
Sep 21, 2017
filing date -
Mar 29, 2013
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Abstract
In a picture coding device for coding picture signals including a brightness signal and a color-difference signal in a block unit using intra-prediction and coding information regarding an intra-prediction mode, when aspect ratios of pixels of the brightness signal and the color-difference signal are different from each other, a bitstream generator converts a mode number of a first intra-color-difference prediction mode used when the aspect ratios are equal to each other into a scaled mode number and derives a second intra-color-difference prediction mode used when the aspect ratios are different from each other.
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