filter_c = np.fft.fftshift(filter_c)
axs[i // L, i % L].imshow(colorize(filter_c))
axs[i // L, i % L].axis("off")
axs[i // L, i % L].set_title("$j = {}$ \n $\\theta={}".format(i // L, i % L))
i = i+1
After Change
fig.suptitle("Wavelets for each scales $j$ and angles $\\theta$ used."
"\n Color saturation and color hue respectively denote complex magnitude and complex phase.", fontsize=13)
fig.show()
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// Lowpass filter
// --------------
