Results 1 to 10 of about 2,506,502 (302)

Map Projection Transitions

open access: yesKartografija i Geoinformacije, 2013
Map Projection Transitions is a very successful web application about map projections. The web page (http://www.jasondavies.com/maps/transition) pre­sents a world map with graticule and country borders in the oblique Aitoff projection, with the South ...
Nedjeljko Frančula, Miljenko Lapaine
doaj   +5 more sources

On the Combinatorics of Projective Mappings [PDF]

open access: yesJournal of Algebraic Combinatorics, 2001
Let \(\mathcal{P}\) denote the group of non-degenerate projective mappings of \(\mathbb R \cup \{\infty\}\), i.e. the set of non-constant linear fractions \(x\mapsto\frac{ax+b}{cx+d}\) where \(ad-bc\neq 0\), with the composition \(\varphi \circ \psi: x\mapsto \varphi(\psi(x))\) as the group operation. Finite sets of such mappings are denoted by \(\Phi\)
Elekes, György, Király, Zoltán
openaire   +1 more source

Approximately Conformal, Equivalent and Equidistant Map Projections [PDF]

open access: yesJournal of Geodesy and Geoinformation Science, 2022
If geodetic coordinates from an ellipsoid are included in the equations of a projection for mapping a sphere instead of geographical coordinates, the result will be a projection of the ellipsoid into a plane.
Miljenko LAPAINE,Nedjeljko FRANČULA
doaj   +1 more source

Regression and Evaluation on a Forward Interpolated Version of the Great Circle Arcs–Based Distortion Metric of Map Projections

open access: yesISPRS International Journal of Geo-Information, 2021
We studied the numerical approximation problem of distortion in map projections. Most widely used differential methods calculate area distortion and maximum angular distortion using partial derivatives of forward equations of map projections. However, in
Jin Yan   +3 more
doaj   +1 more source

From Conic to Cylindrical Map Projections

open access: yesGeodetski Vestnik, 2023
In books and textbooks on map projections, cylindrical, conic and azimuthal projections are usually considered separately. It is sometimes mentioned that cylindrical and azimuthal projections can be interpreted as limiting cases of conic, but this is ...
Miljenko Lapaine
doaj   +1 more source

Projective mapping based on choice or preference: An affective approach to projective mapping [PDF]

open access: yesFood Research International, 2017
This work explores a new affective approach to projective mapping, based on consumers' choices or preferences. Two sessions, one week apart, were performed with the same consumers, using whole bread as a case study. Overall liking ratings (OL) were gathered in blind conditions and samples were also profiled by a trained panel using generic descriptive ...
Varela, Paula   +5 more
openaire   +4 more sources

Dynamic Point Cloud Compression Based on Projections, Surface Reconstruction and Video Compression

open access: yesSensors, 2021
In this paper we will present a new dynamic point cloud compression based on different projection types and bit depth, combined with the surface reconstruction algorithm and video compression for obtained geometry and texture maps. Texture maps have been
Emil Dumic   +2 more
doaj   +1 more source

Semantically Enabling Map Projections Knowledge

open access: yesKartografija i Geoinformacije, 2020
Map projections are an area of cartography with a firm mathematical foundation for their creation and display providing a basis for a knowledge representation.
E. Lynn Usery
doaj   +1 more source

Image-Based Angular Distortion Metric of Map Projections by Using Surface Fitting for Noise Reduction

open access: yesISPRS International Journal of Geo-Information, 2021
Measuring, analyzing, reducing, and optimizing distortions in map projections is important in cartography. In this study, we introduced a novel image-based angular distortion metric based on the previous spherical great circle arcs-based metric.
Jin Yan   +3 more
doaj   +1 more source

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