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Announcements. Review on Thurs Project 4 due Wed night no later than Friday night (with late days) Extra office hour: Friday 4-5. Photograph. Photograph. Virtual Camera. Morphed View. View Interpolation. Problem Statement Input: two views of an unknown rigid scene
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Announcements
  • Review on Thurs
  • Project 4
  • due Wed night
  • no later than Friday night (with late days)
  • Extra office hour: Friday 4-5
  • Photograph Photograph Virtual Camera Morphed View View Interpolation
  • Problem Statement
  • Input: two views of an unknown rigid scene
  • from unknown viewpoints
  • Output: in-between views from a virtual camera
  • Image Morphing Photograph Photograph Photograph Morphed Image Photograph
  • Linear Interpolation of 2D shape and color
  • Not quite... Image Morphing for View Synthesis?
  • We want physically-correct view interpolations
  • Can image morphing do this?
  • Goal: extend to handle changes in viewpoint
  • Produce valid camera transitions
  • Special Case: Parallel Cameras LeftImage MorphedImage RightImage
  • Morphing parallel views new parallel views
  • Linear image motion linear camera motion
  • Works because projection matrices have a special form
  • View Morphing in 3 Steps Input Output Input View Morphing in 3 Steps
  • 1. Prewarp
  • align views
  • View Morphing in 3 Steps
  • 1. Prewarp
  • align views
  • 2. Morph
  • move camera
  • View Morphing in 3 Steps
  • 1. Prewarp
  • align views
  • 2. Morph
  • move camera
  • 3. Postwarp
  • point camera
  • Corrected Photographs Face Recognition Videos
  • View morphing
  • Blanz & Vetter (SIGGRAPH 99)
  • MIT single view (SIGGRAPH 01)
  • Yu inv-radiosity (SIGGRAPH 00)
  • Debevec relight (SIGGRAPH 02)
  • Video rewrite (SIGGRAPH 97)
  • Vision-based pong (Seitz tape)
  • Debevec IBMR in art & cinema tape
  • Debevec face relighting demo
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