Results 51 to 60 of about 7,539,459 (382)

ASSESSING THE ALIGNMENT BETWEEN GEOMETRY AND COLORS IN TLS COLORED POINT CLOUDS [PDF]

open access: yesISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2023
The integration of the color information from RGB cameras with the point cloud geometry is used in numerous applications. However, little attention has been paid on errors that occur when aligning colors to points in terrestrial laser scanning (TLS ...
Z. Wang, M. Varga, T. Medić, A. Wieser
doaj   +1 more source

Matrix geometries emergent from a point [PDF]

open access: yesReviews in Mathematical Physics, 2014
We describe a categorical approach to finite noncommutative geometries. Objects in the category are spectral triples, rather than unitary equivalence classes as in other approaches. This enables us to treat fluctuations of the metric and unitary equivalences on the same footing, as representatives of particular morphisms in this category. We then show
D'ANDREA, FRANCESCO   +2 more
openaire   +5 more sources

Weaknesses of Euclidean Geometry: A Step of Needs Analysis of Non-Euclidean Geometry Learning through an Ethnomathematics Approach

open access: yesEdumatika, 2021
Non-Euclidean Geometry is a complex subject for students. It is necessary to analyze the weaknesses of Euclidean geometry to provide a basis for thinking about the need for learning non-Euclidean geometry.
Khathibul Umam Zaid Nugroho   +2 more
doaj   +1 more source

Geometry of Quantum Projective Spaces [PDF]

open access: yes, 2012
In recent years, several quantizations of real manifolds have been studied, in particular from the point of view of Connes' noncommutative geometry. Less is known for complex noncommutative spaces.
D'Andrea, Francesco, Landi, Giovanni
core   +1 more source

A Generalized Hausdorff Distance Based Quality Metric for Point Cloud Geometry [PDF]

open access: yesInternational Workshop on Quality of Multimedia Experience, 2020
Reliable quality assessment of decoded point cloud geometry is essential to evaluate the compression performance of emerging point cloud coding solutions and guarantee some target quality of experience.
Alireza Javaheri   +3 more
semanticscholar   +1 more source

2D Triangulation of Signals Source by Pole-Polar Geometric Models

open access: yesSensors, 2019
The 2D point location problem has applications in several areas, such as geographic information systems, navigation systems, motion planning, mapping, military strategy, location and tracking moves.
Aleksandro Montanha   +3 more
doaj   +1 more source

Geometrically rational real conic bundles and very transitive actions [PDF]

open access: yes, 2009
In this article we study the transitivity of the group of automorphisms of real algebraic surfaces. We characterize real algebraic surfaces with very transitive automorphism groups.
Biswas   +8 more
core   +7 more sources

A Geometry Feature Aggregation Method for Point Cloud Classification and Segmentation

open access: yesIEEE Access, 2021
In spite of the good performance of convolutional neural network (CNN) and graph neural network (GNN) in 3D point cloud classification and segmentation at present, to aggregate local information of point clouds and improve the robustness of geometric ...
Yong Wang, Chenke Yue, Xintong Tang
doaj   +1 more source

Local Mirror Symmetry: Calculations and Interpretations [PDF]

open access: yes, 1999
We describe local mirror symmetry from a mathematical point of view and make several A-model calculations using the mirror principle (localization).
Chiang, T. -M.   +3 more
core   +2 more sources

Geometry of antimatroidal point sets

open access: green, 2008
14 pages, 3 ...
Yulia Kempner, Vadim E. Levit
openalex   +4 more sources

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