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Merge pull request #13152 from ssnover95:docfix/fourier-transform-py-tutorial

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Alexander Alekhin 2018-11-13 22:05:25 +03:00 committed by GitHub
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doc/py_tutorials/py_imgproc/py_transforms/py_fourier_transform/py_fourier_transform.markdown
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@ -79,11 +79,11 @@ using **np.ifft2()** function. The result, again, will be a complex number. You
absolute value.
@code{.py}
rows, cols = img.shape
crow,ccol = rows/2 , cols/2
fshift[crow-30:crow+30, ccol-30:ccol+30] = 0
crow,ccol = rows//2 , cols//2
fshift[crow-30:crow+31, ccol-30:ccol+31] = 0
f_ishift = np.fft.ifftshift(fshift)
img_back = np.fft.ifft2(f_ishift)
img_back = np.abs(img_back)
img_back = np.real(img_back)
plt.subplot(131),plt.imshow(img, cmap = 'gray')
plt.title('Input Image'), plt.xticks([]), plt.yticks([])