Results 1 to 10 of about 1,460,827 (237)

Geometrical inequalities bounding angular momentum and charges in General Relativity

open access: yesLiving Reviews in Relativity, 2018
Geometrical inequalities show how certain parameters of a physical system set restrictions on other parameters. For instance, a black hole of given mass can not rotate too fast, or an ordinary object of given size can not have too much electric charge ...
María Eugenia Gabach-Clement   +1 more
exaly   +3 more sources

Designing Color Symmetry in Stigmergic Art

open access: yesMathematics, 2021
Color symmetry is an extension of the symmetry imposed by isometric transformations and indicates that the colors of geometrical objects are assigned according to the symmetry properties of these objects.
Hendrik Richter
doaj   +1 more source

An efficient algorithm for non-rigid object registration [PDF]

open access: yesКомпьютерная оптика, 2020
An efficient algorithm for registration of two non-rigid objects based on geometrical transformation of the template object to target object is proposed. The transformation is considered as warping of the template onto the target.
Artyom Makovetskii   +3 more
doaj   +1 more source

Digital Modelling of Underground Volumes, Including the Visualization of Confidence Levels for the Positioning of Subsurface Objects

open access: yesApplied Sciences, 2021
This paper addresses the issue of offering a consistent 3D visual rendering of subsurface objects when databases face non-completion. Digital modelling of subsurface objects, like utility lines, underground buildings or tree roots, is a difficult task ...
Kamel Adouane   +2 more
doaj   +1 more source

Probing canonical geometrical objects by digital spiral imaging [PDF]

open access: yesJournal of the European Optical Society-Rapid Publications, 2007
We recently proposed a novel concept to remotely acquire information of objects, based on the discrete orbital angular momentum of light. Here we use two different schemes for implementing the technique.
Molina-Terriza Gabriel   +4 more
doaj   +1 more source

Image Captioning With Positional and Geometrical Semantics

open access: yesIEEE Access, 2021
The last 5 to 6 years have seen tremendous progress in automatic image captioning using deep learning. Initial research focused on the attribute-to-attribute comparison of image features and texts to describe the image as a sentence, the current research
Anwar Ul Haque   +2 more
doaj   +1 more source

The Concept of Symmetry and the Theory of Perception

open access: yesFrontiers in Computational Neuroscience, 2021
Perceptual constancy refers to the fact that the perceived geometrical and physical characteristics of objects remain constant despite transformations of the objects such as rigid motion.
Zygmunt Pizlo, J. Acacio de Barros
doaj   +1 more source

The concept of surveying set for geometrical dimensioning of difficultly accessible objects [PDF]

open access: yesArchives of Civil Engineering, 2023
While constructing and documenting civil structures, large machines, and industrial facilities, one can encounter a situation where relevant control points are hardly accessible.
Kazimierz Ćmielewski   +3 more
doaj   +1 more source

A Non-destructive Method to Create a Time Series of Surface Area for Coral Using 3D Photogrammetry

open access: yesFrontiers in Marine Science, 2021
The wax dip method typically used to determine the surface area of corals for data normalization is destructive, rendering the collection of time series for such data impossible.
Daniel D. Conley   +2 more
doaj   +1 more source

A Note on Aristotle’s De Anima Α 1, 403a10-16

open access: yesRevista de Filosofia Antiga, 2023
In this paper I discuss passage 403a10-16 from Aristotle’s De Anima. In this passage Aristotle deals with whether the soul could be separate from the body and presents an analogy with geometrical entities.
Orestis Karasmanis
doaj  

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