Results 31 to 40 of about 396,215 (311)
Projections of Tropical Fermat-Weber Points
Mathematics, 2021 This paper is motivated by the difference between the classical principal component analysis (PCA) in a Euclidean space and the tropical PCA in a tropical projective torus as follows.
Weiyi Ding, Xiaoxian Tang
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Object-Based Geometric Distortion Metric for Viewport Rendering of 360° Images
IEEE Access, 2022 To visualize omnidirectional (or 360°) visual content, a sphere to plane projection is employed, that maps pixels from the observed sphere region to a 2D image, called as viewport. However, this projection introduces geometrical distortions on the
Falah Jabar +2 more
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Optical metrics and projective equivalence [PDF]
Physical Review D, 2011 18 pages, two figures, final version, to appear in Physical Review ...
Casey, Stephen +3 more
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Quantum projection filter for a highly nonlinear model in cavity QED [PDF]
, 2005 Both in classical and quantum stochastic control theory a major role is played by the filtering equation, which recursively updates the information state of the system under observation.
Abraham R +25 more
core +2 more sources
Multi-Feature 360 Video Quality Estimation
IEEE Open Journal of Circuits and Systems, 2021 We propose a new method for the visual quality assessment of 360-degree (omnidirectional) videos. The proposed method is based on computing multiple spatio-temporal objective quality features on viewports extracted from 360-degree videos.
Roberto G. de A. Azevedo +4 more
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Projective compactifications and Einstein metrics [PDF]
Journal für die reine und angewandte Mathematik (Crelles Journal), 2014 Abstract For complete affine manifolds we introduce a definition of compactification based on the projective differential geometry (i.e. geodesic path data) of the given connection. The definition of projective compactness involves a real parameter α called the order of projective compactness.
Cap, Andreas, Gover, A. Rod
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Lorentzian Metrics Null-Projectively Related to Semi-Riemannian Metrics
The Journal of Geometric Analysis, 2022 AbstractWe say that a Lorentzian metric and a semi-Riemannian metric on the same manifold M are null-projectively related if every null geodesic of the Lorentzian metric is an unparametrized geodesic of the semi-Riemannian one. This definition includes the case of conformally related Lorentzian metrics and the case of projectively equivalent metrics ...
Benjamín Olea, Francisco J. Palomo
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Extensions of best approximation and coincidence theorems
International Journal of Mathematics and Mathematical Sciences, 1997 Let X be a Hausdorff compact space, E a topological vector space on which E* separates points, F:X→2E an upper semicontinuous multifunction with compact acyclic values, and g:X→E a continuous function such that g(X) is convex and g−1(y) is acyclic for ...
Sehie Park
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METRIC PROJECTIONS IN LINEAR METRIC SPACES
Demonstratio Mathematica, 1990 Summary: Various properties of the metric projection are known in normed linear spaces. \textit{G. Pantelidis} [Math. Ann. 184, 30--48 (1969; Zbl 0175.42001)] discussed some of these properties in linear metric spaces. In this paper we also discuss some necessary and sufficient conditions for the metric projections to be continuous and Lipschitzian in ...
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Pediatric Blood &Cancer, EarlyView.ABSTRACT Background Kaposiform lymphangiomatosis (KLA) is an aggressive complex lymphatic anomaly. Patients exhibit malformed lymphatic vessels and often develop hemorrhagic effusions and elevated angiopoietin‐2 (Ang‐2) levels. A somatic NRAS p.Q61R (NRASQ61R) mutation has been associated with KLA.
C. Griffin McDaniel +3 more
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