Function Index
	InverseDiscreteCosineTransform InverseDiscreteCosineTransform[coef] returns the inverse discrete cosine transform (IDCT) of a list of DCT coefficients coef. The 1D IDCT of X[k] is defined as for n = 0,1,...,N-1. The 2D IDCT is defined as for n1 = 0,1,...,N1-1 and n2 = 0,1,...,N2-1, where The argument coef may be a vector or a matrix. See also User's Guide 8.4, 8.8. Example This loads the package. In[1]:= This creates a list of cosine coefficients. In[2]:= Out[2]= This computes the inverse cosine transform and verifies invertibility. In[3]:= Out[3]=