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Bringing Photographs to Life With View Morphing. Steve Seitz University of Wisconsin—Madison. Images Are Static. Photographs Lack Movement — scene is frozen in time Depth — image is two-dimensional Can we animate the scene via the image?. Objective: Scene Interaction Via Photos. - PowerPoint PPT Presentation
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Bringing Photographs to LifeBringing Photographs to LifeWith View MorphingWith View Morphing
Steve Seitz
University of Wisconsin—Madison
Images Are Static
• Photographs Lack– Movement — scene is frozen in time– Depth — image is two-dimensional
• Can we animate the scene via the image?
Objective:Scene Interaction Via Photos
• Scene Viewing– Move virtual camera, view real scene
• Scene Interaction– Move objects — cut and paste– Change objects — paint, sculpt– Animate the scene — make things walk, talk
Adding Movement
• •
Original ImageOriginal Image Expression ChangeExpression Change
Adding Depth
• •
Original ImageOriginal Image Perspective ChangePerspective Change
Talk Outline
• Adding Motion and Depth• View Morphing
• Applications• Visualization, photo correction, special effects
• Interacting With the Scene• Scene editing via photographs
PhotograPhotographph
PhotograPhotographph
Morphed Morphed ViewView
Virtual CameraVirtual Camera
• 1. Prewarp• align views
• 1. Prewarp• align views
• 2. Morph • move camera
• 1. Prewarp• align views
• 2. Morph • move camera
• 3. Postwarp• point camera
Features of View Morphing
• Provides– A mobile virtual camera– Better image morphs
• Requires no prior knowledge– No 3D shape information– No camera information– No training on other images
Applications: Visualization
• User-controlled Virtual Camera– Telepresence — visit a remote scene– Web commerce — product viewing over Internet– Viewing historical sites– Animating paintings
Applications: Photo Correction• Image Postprocessing
– Alter image perspective in the lab
• Image Databases– Normalize images for better indexing– Simplify face recognition tasks
Corrected PhotographsCorrected Photographs
Original PhotographsOriginal Photographs
Applications: Better Image Transitions
– Avoid bending and shearing distortions– Shapes do not need to be aligned
Image MorphImage Morph
View MorphView Morph
The Next Step:Interacting With the Scene
• Scene Editing Via Photographs– Move objects — cut and paste– Change objects — paint, warp
SceneScene
PaintedPainted Photo Photo
PhotoPhoto
PropagationPropagation
Original PhotoOriginal Photo
Original PhotoOriginal Photo
Painted Painted PhotoPhoto
Cut PhotoCut PhotoOriginal PhotoOriginal Photo
Original PhotoOriginal Photo
Painted PhotoPainted Photo Cut PhotoCut Photo
New Views ofNew Views ofModified SceneModified Scene
Original PhotoOriginal Photo
Conclusions
• Photographs Come Alive– Motion, depth added by View Morphing
• User-Scene Interaction Via Photos– Still images interactive movies– What kinds of scene changes are possible?– Which modes of interaction are natural?
