Method and appratus for encoding video using selective scan mode method and appratus for decoding video using selective scan mode

摘要

The present invention proposes video encoding and video decoding by selectively determining and using a scan mode. The present invention performs transformation based on a transformation unit to encode an image, generates transform coefficients, and determines a scan mode indicating a scan direction of transform coefficients among a plurality of scan modes based on characteristics of the transform coefficients. A video encoding method of determining and outputting an encoding order of transform coefficients based on a determined scan direction of a scan mode is disclosed.