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construct_lenna.py �ԐȪ� #!/bin/env python import numpy as np import scipy.misc from scipy.fftpack import dct, idct import sys H = 128 W = 128 lenna = scipy.misc.imresize(scipy.misc.lena(), (H, W)).astype(float) lenna_F = dct(dct(lenna, axis=0), axis=1) ## 2D DCT of lenna canvas = np.zeros((H,W)) for h in range(H): for w in range(W): a = np.zeros((H,W)) a[h,w] = 1 base = idct(idct(a, axis=0), axis=