Video encoding method and decoding method, apparatuses therefor, programs therefor, and storage media for recording the programs
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United States of America Patent
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Jun 9, 2015
Grant Date -
Mar 18, 2010
app pub date -
Oct 5, 2007
filing date -
Oct 10, 2006
priority date (Note) -
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Abstract
A video encoding method, in which a video signal consisting of two or more signal elements is targeted to be encoded, includes a step of setting a downsampling ratio is set for a specific signal element in a frame, in accordance with the characteristics in the frame; and a step of generating a target video signal to be encoded, by subjecting the specific signal element in the frame to downsampling in accordance with the set downsampling ratio. The frame may be divided into partial areas in accordance with localized characteristics in the frame; and a downsampling ratio for a specific signal element in these partial areas may be set in accordance with the characteristics in each partial area.
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