Saving a PyWavelets Transform as an image (jpg/png) - python-3.x

Question

I've been trying to save the final transform of the PyWavelets transform, but it only saves the total figure. Does anyone have any recommendations
I get 4 transforms and the end goal is to convert the transforms into bytes. Which I have already solved but I just need a way to straight up save this image as a jpeg or png.
import numpy as np
import matplotlib.pyplot as plt
import cv2
from matplotlib.pyplot import imread
import pywt
import colorspacious
from matplotlib import cm
from colorspacious import cspace_converter
import os
import sys
from PIL import Image
## Load Images
A = imread('gabieureka.jpg')
originalA = np.mean(A, -1)
B = imread('votetemi.jpg')
originalB = np.mean(B, -1)
## Transform A into wavelets
titles = ['Approximation', ' Horizontal detail',
'Vertical detail', 'Diagonal detail']
coeffs1 = pywt.dwt2(originalA, 'bior1.3')
LL, (LH, HL, HH) = coeffs1
fig = plt.figure(figsize=(12, 3))
for i, a in enumerate([LL, LH, HL, HH]):
ax = fig.add_subplot(1, 4, i + 1)
ax.imshow(a, interpolation="nearest", cmap=plt.cm.gray)
ax.set_title(titles[i], fontsize=10)
ax.set_xticks([])
ax.set_yticks([])
#with open('gabieureka.jpg', 'rb') as f:
# byte_A = f.read(HH)
titles = ['Approximation', ' Horizontal detail',
'Vertical detail', 'Diagonal detail']
coeffs2 = pywt.dwt2(originalB, 'bior1.3')
LL, (LH, HL, HH) = coeffs2
fig = plt.figure(figsize=(12, 3))
for i, a in enumerate([LL, LH, HL, HH]):
ax = fig.add_subplot(1, 4, i + 1)
ax.imshow(a, interpolation="nearest", cmap=plt.cm.gray)
ax.set_title(titles[i], fontsize=10)
ax.set_xticks([])
ax.set_yticks([])
fig.tight_layout()
plt.show()
waveGabi = imageio.imwrite("Wavelett_Compressed_" + A, A)
waveGabi.save("Wavelett_Compressed_" + A)
return