Question

import scipy
from scipy import*
from scipy.fftpack import*
from scipy.fftpack import fft, ifft, fft2


def fouriertransform(self):     #function for Fourier transform computation
    for filename in glob.iglob ('*.tif'):
      imgfourier = scipy.misc.imread(filename) #read the image
      arrayfourier = numpy.array([imgfourier])#make an array 
    # Take the fourier transform of the image.
      fone = fftpack.fft(arrayfourier)
    # Now shift so that low spatial frequencies are in the center.
      ftwo = fftpack.fftshift(fone)
    # the 2D power spectrum is:
      psd2D = np.abs(ftwo)**2
      L = psd2D
      np.set_printoptions(threshold=3)
    #np.set_printoptions(precision = 3, threshold = None, edgeitems = None, linewidth = 3, suppress = True, nanstr = None, infstr = None, formatter = None)
    for subarray in L:
        for array in subarray:
            for array in subarray:
                for elem in array:
                    print '%3.10f\n' % elem

我收到的全局名称fftpack未定义。有什么问题？

Answer 1

您的所有导入变体都没有将名称fftpack放入模块的命名空间中。这样做：

from scipy import fftpack

FFTPACK Scipy全局名称未正确定义。怎么修？

1 个答案: