METHOD AND DEVICE FOR IMAGE ENCODING AND DECODING USING LARGE TRANSFORMATION UNIT

摘要

FIELD: information technology.SUBSTANCE: image decoding device includes a processor which determines coding units with a hierarchical structure for decoding an image. The device also includes at least one prediction unit for predicting each coding unit. Furthermore, the device includes at least one transformation unit for reverse transformation of each coding unit by using information on the form of division of the coding unit, information on at least one prediction unit and information on at least one transformation unit, obtained by analysis from a received bit stream of encoded video.EFFECT: high efficiency of encoding and decoding images by setting the size of the transformation unit larger than the prediction unit.4 cl, 18 dwg