This function computes the DCT matrix that can be used in place of the
discrete cosine transform for square, two-dimensional block data. This
matrix, M, is used as Y = M ## X ## M' to compute the DCT, Y, of the
square, two-dimensional data array X.
Result = CREATE_DCT_MATRIX( dimension )
A scalar describing the dimension of the square DCT matrix to be
determined. This parameter specifies the number of columns/row
in the returned matrix.
Result is a double precision, floating point array containing the coefficients
to compute the DCT of any block array of the specified size.
Written by: Carl Salvaggio
February, 2009 Original code
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