Discover the animal

remove_high_frequency.py

# %%%
import PIL.Image
import numpy as np
import matplotlib.pyplot as plt

# %%
im = PIL.Image.open("panda.jpeg")

arr = np.array(im).mean(2)

freq = np.fft.fft2(arr)

n, m = freq.shape
for i in range(n):
    for j in range(m):
        if min(i, j) >= 10:
            freq[i, j] = 0

inv_arr = np.fft.ifft2(freq)
for i in range(n):
    for j in range(m):
        inv_arr[i, j] = abs(inv_arr[i, j]).real

inv_array = inv_arr.astype(float)
plt.imshow(inv_array, cmap='gray')