ENCODING/DECODING DEVICE, METHOD THEREFOR, AND RECORDING MEDIUM ON WHICH PROGRAM FOR IMPLEMENTING SAID METHOD IS RECORDED

摘要

Disclosed are an encoding/decoding device, a method therefor, and a recording medium on which a program for implementing the method is recorded. A method for generating a decoded pixel value, which is performed in an inverse discrete cosine transformation unit of a decoding device, comprises the steps of: calculating TERMS by multiplying a weight corresponding to position information of each DCT coefficient in a macroblock by said each DCT coefficient; and generating a combined result value obtained by summing up at least one TERMS corresponding to DCT coefficients inputted into the macroblock by each term of the same position. According to the present invention, computational quantity and computational complexity may be minimized in an encoding and decoding process, and instant transformation may be possible.