• Adobe After Effects Expressions

  Math behind the Displacement Effect

  Posted by Nicholas Joseph on March 4, 2011 at 1:20 am

  Hello everyone…

  Does anyone know the math behind the Displacement Effect in AE???
  So…I am doing some stereographic work and trying to do a little math that calculates the pixel depth.

  here is what I have so far…and it may be wrong..

  RGB(luminance) + (offset x 2) + (displacement x (-2))

  where:::

  RGB = the gray scale image that defines what gets displaced.
  Offset = global depth multiplier.
  displacement = horizontal displace value.

  The end game is to get use the sampleImage() expression to get the luminance value of a pixel and then apply that value through the Displacement formula to get the amount of pixels displaced.

  here is the link to my test file. the smf_fsz473_ANA comp is the result of the displace.

  1703_sample.aep.zip

  Can someone please help!!!

  Thanks

  —–
  NIK
  —–

  Nicholas Joseph replied 15 years, 2 months ago 1 Member · 0 Replies
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