Title of article :
Interactive Multiresolution Editing and Display of Large Terrains
Samuel Atlan ، نويسنده , , Michael Garl، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2006
In recent years, many systems have been developed for the real-time display of very large terrains. While many
of these techniques combine high-quality rendering with impressive performance, most make the fundamental assumption
that the terrain is represented by a fixed height map that cannot be altered at run time. Such systems
frequently rely on extensive preprocessing of the raw terrain data. They are mostly designed for maximum performance.
Consequently, these techniques are ill-suited for the many applications such as geological simulations and
games in which terrain surfaces must be altered interactively.
We present a two-component system that can achieve real-time view-dependent rendering while allowing on-line
multiresolution alterations of a large terrain. Our fundamental height map representation is a wavelet quadtree
hierarchy, allowing one to easily apply arbitrary multiresolution edits to the terrain. Our display algorithm extracts
a view-dependent approximation of the terrain from the wavelet quadtree in real time. The algorithm dynamically
alters this approximation based on any ongoing edits. To allow for flexibility and to limit performance loss, the two
components of this system have been designed to be as independent as possible.
real-time terrain , quadtrees , wavelets , multiresolution editing
Journal title :
Computer Graphics Forum