A number of
interesting thing can be observed here. The first is that the glass in
the bottom images reveals details that are not visible in any of the
original images. It reveals the bubbles embedded in the glass which is
something undetectable in any of the individual frames. If we look at
the deviation instead of the mean we get the following image
Equalization of this image leads to
A similar image can be obtained by taking the maximum intensity at
every pixel
