METHOD AND DEVICE FOR SUBBAND CODING FREQUENCY CONVERSION UNIT, AND METHOD AND DEVICE FOR IMAGE ENCODING USING SAME

摘要

The present disclosure provides a method and apparatus for subband-coding a frequency conversion unit and a video encoding/decoding method a video encoding/decoding apparatus using the same. The method and the apparatus for subband-coding the frequency conversion unit include generating an encoding stream by splitting the frequency conversion unit into one or more frequency regions, generating frequency region encoding information according to whether there is a non-zero frequency coefficient in each frequency region, scanning the frequency coefficient of each frequency region to generate a frequency region frequency coefficient stream, and binarizing and encoding the frequency region encoding information and the scanned frequency region frequency coefficient stream.