1. A discrete cosine transform coefficient prediction method comprising: copying, using a computing apparatus, pixel coefficients in a row and a column spatially nearest to a transform coefficient to be predicted in a discrete cosine transform block to be predicted, respectively within pixel blocks adjacent to the discrete cosine transform block to be predicted, to create pixel blocks corresponding to the size of the discrete cosine transform block; performing separately one-dimensional discrete cosine transform on the respective rows and columns of each of the created pixel blocks; creating prediction coefficients for the transform coefficient to be predicted; and creating a prediction value for the transform coefficient to be predicted using a difference between the created prediction coefficients and the transform coefficient to be predicted.