A Parallel Implementation of the Douglas-Peucker Line Simplification
نویسندگان
چکیده
As parallel machines become more widely available, many existing algorithms are being converted to take advantage of the improved speed offered by such computers. However, the method by which the algorithm is distributed is crucial towards obtaining the speed-ups required for many real-time tasks. This paper presents three parallel implementations of the Douglas-Peucker line simplification algorithm on a Sequent Symmetry computer and compares the performance of each with the original sequential algorithm.
منابع مشابه
A Massively Parallel Line Simplification Algorithm Using an Associative Computing Model
Line simplification is a process of reducing the number of line segments and vertices to represent a polyline. This reduction in the number of line segments and vertices can improve the performance of spatial analysis applications. The classic Douglas-Peucker algorithm developed in 1973 has a complexity of O(mn), where n denotes the number of vertices and m the number of line segments. Its enha...
متن کاملA Massively Parallel Line Simplification Algorithm Using an Associative Computing Model
Line simplification is a process of reducing the number of line segments and vertices to represent a polyline. This reduction in the number of line segments and vertices can improve the performance of spatial analysis applications. The classic Douglas-Peucker algorithm developed in 1973 has a complexity of O(mn), where n denotes the number of vertices and m the number of line segments. Its enha...
متن کاملThe Douglas-Peucker Algorithm for Line Simplification: Re-evaluation through Visualization
The primary aim of this paper is to illustrate the value of visualization in cartography and to indicate that tools for the generation and manipulation of realistic images are of limited value within this application. This paper demonstrates the value of visualization within one problem in cartography, namely the generalisation of lines. It reports on the evaluation of the Douglas-Peucker algor...
متن کاملThe Douglas-Peucker Algorithm: Sufficiency Conditions for Non-Self-Intersections
The classic Douglas-Peucker line-simplification algorithm is recognized as the one that delivers the best perceptual representations of the original lines. It may, however, produce simplified polyline that is not topologically equivalent to the original one consisting of all vertex samples. On the basis of properties of the polyline hulls, Saalfeld devised a simple rule for detecting topologica...
متن کاملSIMPLIPOLY: Curvature-based polygonal curve simplification
A curvature-based algorithm to simplify a polygonal curve is described, together with its implementation. The so-called SimpliPoly algorithm uses Bézier curves to approximate pieces of the input curve, and assign curvature estimates to vertices of the input polyline from curvature values computed for the Bézier approximations. The implementation of SimpliPoly is interactive and available freely...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Softw., Pract. Exper.
دوره 21 شماره
صفحات -
تاریخ انتشار 1991