Python | Numpy np.ifft2() method (original) (raw)

Last Updated : 21 Nov, 2019

With the help of **np.ifft2()** method, we can get the 2-D Inverse Fourier Transform by using np.ifft2() method.

Syntax : np.fft2(Array)
Return : Return a 2-D series of inverse fourier transformation.

Example #1 :
In this example we can see that by using np.ifft2() method, we are able to get the 2-D series of inverse fourier transformation by using this method.

import numpy as np

a = np.array([[ 5 , 4 , 6 , 3 , 7 ], [ - 1 , - 3 , - 4 , - 7 , 0 ]])

gfg = np.fft.ifft2(a)

print (gfg)

Output :

[[ 1. +0.j 0.80901699-0.21796276j -0.30901699-0.92330506j
-0.30901699+0.92330506j 0.80901699+0.21796276j]
[ 4. +0.j -0.5854102 +0.j 0.0854102 +0.j
0.0854102 +0.j -0.5854102 +0.j ]]

Example #2 :

import numpy as np

a = np.array([[ - 5.5 , 4.4 , - 6.6 , 3.3 , - 7.7 ], [ 1.1 , - 3.3 , 4.4 , - 7.7 , 0 ]])

gfg = np.fft.ifft2(a)

print (gfg)

Output :

[[-1.76+0.j -0.11+0.96624249j -0.11+0.30801859j -0.11-0.30801859j
-0.11-0.96624249j]
[-0.66+0.j -0.66+0.17149948j -0.66+2.99751362j -0.66-2.99751362j
-0.66-0.17149948j]]

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