It is still challenging to generate hand-drawn pictures because they differ from ordinary photographs in that they are often drawn as seen from multiple viewpoints. This paper presents a new approach for modeling such surperspective projection based on shape deformation techniques. Specifically, surperspective landscape images for guide-maps are generated from 3D geographical elevation data. Our method first partitions a target geographical surface into feature areas to provide designers with landmarks suitable for editing. The system takes as input 2D visual effects, which are converted to 3D geometric constraints for geographical surface deformation. Using ordinary perspective projection, the deformed shape is then transformed into a target guide-map image where each landmark enjoys its own vista points. An algorithm for calculating such 2D visual effects semi-automatically from the geographical shape features is also considered.
|Number of pages||10|
|Journal||Computer Graphics Forum|
|Publication status||Published - 2002 Sept|
|Event||23rd Annual Conference (EUROGRAPHICS 2002) - Saarbrucken, Germany|
Duration: 2002 Sept 2 → 2002 Sept 6
ASJC Scopus subject areas
- Computer Graphics and Computer-Aided Design