A photo of an aeroplane. You can see this example as
an artificial object ,
with the sky as the background
Isolation of this artificial object from the
background. Usually I use this technique to analyse
a
photo with a UFO. The problem starts when the background
is complex.
In November 1997, it was
showed a video of a big UFO flying over the buildings in
Mexico City. Television viewers were strongly shocked by
the video and the UFOs reporter was pleased smiling
before the astonished public.
Several months later, the video was submitted to
scientific community, and the fraud was revealed. On an
image approach, the object exhibited features of a
metallic globe with the shape of a spatial ship.