Video-encoding method and apparatus for same and video-decoding method and apparatus for same using a selective scan mode
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United States of America Patent
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Jan 23, 2018
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Jul 18, 2016
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Jan 13, 2011
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Abstract
Provided are encoding and decoding methods and apparatuses for a video by selectively determining and using a scan mode. The video encoding method includes: generating transformation coefficients by performing transformation based on a transformation unit to encode an image; determining a scan mode, from among a plurality of scan modes, indicating a scanning direction of the generated transformation coefficients, based on characteristics of the transformation coefficients; and determining and outputting an encoding order of the generated transformation coefficients based on the scanning direction of the determined scan mode.
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