ENCODING AND DECODING DEVICE AND METHOD USING INTRA PREDICTION

摘要

The present invention relates to an encoding and decoding device and method using intra prediction, and provides an encoding device using intra prediction. The encoding device comprises: a reference pixel characteristic extraction unit that determines a reference pixel characteristic by receiving at least one or more reference pixels, which are contained in an adjacent block of a target block for performing an encoding function, and determines whether to apply adaptive filtering for said at least one or more reference pixels on the basis of said reference pixel characteristic; a first intra prediction unit that compares a result, which is produced by performing an intra prediction with a reference pixel that has performed a high-frequency elimination filtering, with a result, which is produced by performing an intra prediction with a reference pixel that did not perform the high-frequency elimination filtering, if said reference pixel characteristic extraction unit determined to apply the adaptive filtering, and outputs a result having a reduced cost in conjunction with the filtering information that shows whether the filtering has been performed; and a second intra prediction unit that outputs the result, which is produced by performing the intra prediction with the reference pixel that did not perform said high-frequency elimination filtering, if said reference pixel characteristic extraction unit determined not to apply the adaptive filtering.