Results 61 to 70 of about 4,255,094 (265)
Discrete Mathematics & Theoretical Computer Science, 2008 Severini and Mansour introduced $\textit{square polygons}$, as graphical representations of $\textit{square permutations}$, that is, permutations such that all entries are records (left or right, minimum or maximum), and they obtained a nice formula for ...
Enrica Duchi, Dominique Poulalhon
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GMZ: A GML COMPRESSION MODEL FOR WEBGIS [PDF]
ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2017 Geography markup language (GML) is an XML specification for expressing geographical features. Defined by Open Geospatial Consortium (OGC), it is widely used for storage and transmission of maps over the Internet.
A. Khandelwal, K. S. Rajan
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Examples, Counterexamples, and Enumeration Results for Foldings and Unfoldings between Polygons and Polytopes [PDF]
, 2000 We investigate how to make the surface of a convex polyhedron (a polytope) by folding up a polygon and gluing its perimeter shut, and the reverse process of cutting open a polytope and unfolding it to a polygon.
Demaine, Erik D. +3 more
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AREAL FEATURE MATCHING BASED ON SIMILARITY USING CRITIC METHOD [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2015 In this paper, we propose an areal feature matching method that can be applied for many-to-many matching, which involves matching a simple entity with an aggregate of several polygons or two aggregates of several polygons with fewer user intervention. To
J. Kim, K. Yu
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Visibility of a simple polygon
Computer Vision, Graphics, and Image Processing, 1983 Abstract The hidden line problem in the plane is studied and an optimal algorithm for finding the visibility polygon of a point inside or outside a simple polygon is given. The algorithm uses only one stack, instead of three as used in a previously known algorithm by El-Gindy and Avis (J. Algor. 2, 1981, 186–197).
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Meteo Browser South Tyrol: A Shiny App to download the meteorological time series from the Open Data Catalogue of the Province of Bolzano/Bozen - Italy [PDF]
Research Ideas and Outcomes, 2019 Meteo Browser South Tyrol is a user-friendly web-based application that helps to visualize and download the hydro-meteorological time series freely available in South Tyrol, Italy.
Giulio Genova +3 more
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Covering a Simple Polygon by Monotone Directions
Computational Geometry, 2008 AbstractIn this paper we study the problem of finding a set of k directions for a given simple polygon P, such that for each point p∈P there is at least one direction in which the line through p intersects the polygon only once. For k=1, this is the classical problem of finding directions in which the polygon is monotone, and all such directions can be
Ahn, HK +4 more
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A simple proof for visibility paths in simple polygons
, 2020 The purpose of this note is to give a simple proof for a necessary and sufficient condition for visibility paths in simple polygons. A visibility path is a curve such that every point inside a simple polygon is visible from at least one point on the path.
Charkari, Nasrollah Moghaddam +1 more
core
An Algorithm for Finding Convex Hulls of Planar Point Sets
, 2012 This paper presents an alternate choice of computing the convex hulls (CHs) for planar point sets. We firstly discard the interior points and then sort the remaining vertices by x- / y- coordinates separately, and later create a group ofquadrilaterals (e-
Mei, Gang +2 more
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Ceylon Journal of Science, 2016 Polygons can conveniently represent real world objects. In automatic character recognition, shapes of individual letters are represented by polygons. In robotics, obstacles are represented using polygons.
K. R. Wijeweera, S. R. Kodituwakku
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