Morphing Polygonal Lines: A Step Towards Continuous Generalization
نویسندگان
چکیده
Visualization of geographic information in the form of maps has been established for centuries. Depending on the scale of the map the level of detail of displayed objects must be adapted in a generalization process. Be it done manually or (semi-)automatically, generalization methods usually produce a map at a single target scale. This is a well-studied field, surveyed, for example, by Weibel and Dutton (1999).
منابع مشابه
Morphing polylines: A step towards continuous generalization
We study the problem of morphing between two polylines that represent linear geographical features like roads or rivers generalized at two different scales. This problem occurs frequently during continuous zooming in interactive maps. Situations in which generalization operators like typification and simplification replace, for example, a series of consecutive bends by fewer bends are not alway...
متن کاملCreating Smooth Implicit Surfaces from Polygonal Meshes
Implicit surfaces have long been used for a myriad of tasks in computer graphics, including modeling soft or organic objects, morphing, and constructive solid geometry. Although operating on implicit surfaces is usually straight-forward, creating them is not — interactive techniques are impractical for complex models, and automatic techniques have been largely unexplored. We introduce a practic...
متن کاملRobust Creation of Implicit Surfaces from Polygonal Meshes
Implicit surfaces are used for a number of tasks in computer graphics, including modeling soft or organic objects, morphing, collision detection, and constructive solid geometry. Although operating on implicit surfaces is usually straightforward, creating them is not. We introduce a practical method for creating implicit surfaces from polygonal models that produces high-quality results for comp...
متن کاملAn Algorithm for Continuous Resolution PolygonaIizations of a Discrete Surface
An algorithm for polygonalizing a discrete surface (height grid) is presented. A quad tree is used to create a bottom-up, irregular rectangular polygonalization of an input height grid by merging homogenous regions starting at the pixel level and working up the tree. A homogenous region is composed of any number of smaller regions that differ within a user specified error tolerance in gradient ...
متن کاملContinuous Scale Transformations of Linear Features Using Simulated Annealing-Based Morphing
This paper presents a new method for use in performing continuous scale transformations of linear features using Simulated Annealing-Based Morphing (SABM). This study addresses two key problems in the continuous generalization of linear features by morphing, specifically the detection of characteristic points and correspondence matching. First, an algorithm that performs robust detection of cha...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2006