Method Image.Image()->phasehv()

Method phaseh
Method phasev
Method phasevh
Method phasehv

object phaseh()
object phasev()
object phasevh()
object phasehv()

Description

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.

original	phaseh()	phasev()	phasevh()	phasehv()

Returns

the new image object

Note

experimental status; may not be exact the same output in later versions

Bugs

0 should not be set as explained above.