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import numpy as np
import matplotlib.pyplot as plt
import cv2
orig = cv2.imread('disp_orig.png', cv2.IMREAD_ANYDEPTH).astype(np.float32)
ta = cv2.imread('disp_ta.png', cv2.IMREAD_ANYDEPTH).astype(np.float32)
es = cv2.imread('disp_es.png', cv2.IMREAD_ANYDEPTH).astype(np.float32)
plt.figure()
plt.subplot(2, 2, 1);
plt.imshow(orig / 16, vmin=0, vmax=4, cmap='magma')
plt.subplot(2, 2, 2);
plt.imshow(ta / 16, vmin=0, vmax=4, cmap='magma')
plt.subplot(2, 2, 3);
plt.imshow(es / 16, vmin=0, vmax=4, cmap='magma')
plt.subplot(2, 2, 4);
plt.imshow(np.abs(es - ta) / 16, vmin=0, vmax=1, cmap='magma')
plt.show()