Tour Into the Picture [TIP]

Outline Introduction TIP Multi-Perspective Modeling

Motivation Impressive results using the TIP technique TIP By Hoi Ng 1982

The TIP Technique

BackgroundForeground

Background ModelForeground with meshes

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

Multiple Perspectives in Chinese Landscape Paintings Eye locations

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

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 Sub-scene 1 Sub-scene 2

MPM: Global Modeling Global model Rectangle Cylinder Sphere

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

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

MPM: Model Switching Scene entry points

Panorama as Input Sub-scene 2 Sub-scene 1

MPM: Model Switching