Draws images describing the phase
of the current image. phaseh gives the
horizontal phase and phasev the vertical
phase.
phaseh gives an image
where
max falling min rising
value= 0 64 128 192
0 is set if there is no way to determine
if it is rising or falling. This is done
for the every red, green and blue part of
the image.
Phase images can be used to create ugly
effects or to find meta-information
in the orginal image.
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| original |
phaseh() |
phasev() |
phasevh() |
phasehv() |
Image.Image()->phaseh()