About error maps

[Heroandzhang]

Hi!I would like to ask you how to get the error maps? Is there specific codes for these? Thank you very much!

[JunHeum]

Hi, Heroandzhang.

To get the error maps for comparing a test frame and target frame, you first pixel-wise subtract two frames and compute the pixel-wise absolute value of the subtraction results, which we call an error map.

Next, using OpenCV library, you can obtain heat map of the error map for visualization.
heat_error = cv2.applyColorMap(error, cv2.COLORMAP_JET)

Finally, save it then check it.
cv2.write('error_map.png', heat_diff)