Tour Into the Picture [TIP] - PowerPoint PPT Presentation

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Tour Into the Picture [TIP]

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  1. Tour Into the Picture [TIP]

  2. Outline • Introduction • TIP • Multi-Perspective Modeling

  3. Motivation • Impressive results using the TIP technique TIP By Hoi Ng 1982

  4. The TIP Technique

  5. Background Foreground

  6. Background Model Foreground with meshes

  7. Motivation (cont.) • Chinese landscape paintings • Horizontal or vertical scrolls from Mustard Seed Garden Painting Manual, revised version by Ch’ao Hsun, 1887

  8. Multiple Perspectives in Chinese Landscape Paintings Eye locations

  9. Motivation (cont.) • Panorama • Compact representation • Easy to produce • Cost effective for virtual reality (VR)

  10. Sub-scene 1 Sub-scene 2 Multi-Perspective Modeling (MPM) • Solution: introduce local and global models; switch them smoothly • TIP is not applicable for multi-perspective images: • horizons at different levels • multiple cavities

  11. Rectangle • Cylinder • Sphere MPM: Global Modeling • Global model

  12. A box model as in TIP • Foreground objects as “billboards” MPM: Sub-scene Modeling • Local model for a sub-scene

  13. Pre-processing Digitize the input image Modeling Model back-ground using TIP interface Identify sub-scenes Prepare: Foreground mask Background image Select a global model Build billboards for foreground objects from mask Rendering Record animation key-frames Generate smooth camera path Render & output animation MPM: System Overview For each sub-scene

  14. MPM: Model Switching Scene entry points

  15. Panorama as Input Sub-scene 2 Sub-scene 1

  16. MPM: Model Switching