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Morphing
(Image Metamorphosis)

• Morphing: 2D images are warped and faded to create illusion of metamorphosis.

• We've seen how interpolation can change shape of mathematically described lines and curves (as in draw-type programs), but what about shape transitions between objects difficult or impossible to model realistically (e.g., faces, animals, represented by pixmaps)?

• Need a way to achieve similar effects in paint-type programs, using digitized photographs, or video

1930-1950: The Monster Film Fade

• Monster films like Dr. Jeckle and Mr. Hyde required on-screen smooth transformations. Here's one way they did it:

  • had Dr. Jeckly stand perfectly still, filmed a few minutes of this

  • got same actor re-made-up as Mr. Hyde, in exactly same position, filmed for a few seconds

  • sent film to photo lab where technicians created a cross-fade between the two sets of images

  • voila! A monster transformation

Animation - 10 MAY 95

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