Results 81 to 90 of about 3,176 (221)

Democratising Multi‐Projector Displays

Computer Graphics Forum, EarlyView.
Spatially augmented reality (SAR) transforms large, surround, collaborative experiences out of VR/AR headsets to the real world by merging content from projectors with the physical environment. This detailed state‐of‐the‐art survey reports on the advancements in multi‐projector aggregation and hardware technologies used to achieve SAR and build ...
Aditi Majumder, Muhammad Twaha Ibrahim
wiley   +1 more source

Basis Networks: Learning basis functions for free‐form triangulations

Computer Graphics Forum, EarlyView.
Abstract We present a framework for learning compactly supported basis functions that define tangent continuous surfaces based on coarse irregular triangle meshes. The basis functions are represented as MLPs. Smoothness of the basis functions is achieved by using the values of Loop basis functions as the parameterization of the surface.
T. Djuren, M. Alexa
wiley   +1 more source

Register‐Efficient Linear‐Time Evaluation in the Bernstein Basis

Computer Graphics Forum, EarlyView.
Abstract We investigate the evaluation of points and derivatives of Bézier curves and surfaces on modern architectures, focusing on performance and guided by numerical error bounds. While the de Casteljau algorithm remains the reference for numerical robustness, its linear working‐set size imposes substantial register pressure on GPUs.
Gábor Valasek, Anna Lili Horváth
wiley   +1 more source

Quartic Rational Said-Ball-Like Basis with Tension Shape Parameters and Its Application

Journal of Applied Mathematics, 2014
Four new quartic rational Said-Ball-like basis functions, which include the cubic Said-Ball basis functions as a special case, are constructed in this paper.
Yuanpeng Zhu, Xuli Han, Shengjun Liu
doaj   +1 more source

Parallel Vectors Extraction using Bézier Clipping

Computer Graphics Forum, EarlyView.
Abstract In this paper, we propose a novel local feature extraction algorithm for the parallel vectors (PV) operator. Our method is based on Bézier clipping, which is a bracketing‐based root finding method that is commonly‐used in computer‐aided geometric design.
Nico Daßler, Tobias Günther
wiley   +1 more source

Generalized Rational B-Spline Bases via Homographic Parametrization and Applications

International Journal of Mathematics and Mathematical Sciences
A new class of rational parametrization has been developed and was used to generate a new family of rational B-splines,  αGiki=0k, which depend on a parameter α∈−∞,0∪1,+∞.
Mohamed Allaoui, Jamal Adetola, Koffi Wilfrid Houédanou, Aurélien Goudjo   +3 more
doaj   +1 more source

Single Line Drawing Generation via Semantics‐Driven Optimization

Computer Graphics Forum, EarlyView.
We present a method for automatically generating single‐line drawings in vector format, guided by a text prompt or an input image. Our approach leverages score distillation sampling to optimize the parameters of a uniform rational B‐spline (URBS) curve, ensuring that the drawing consists of a single continuous stroke by design.
Tanguy Magne, Alexandre Binninger, Ruben Wiersma, Olga Sorkine‐Hornung   +3 more
wiley   +1 more source

A note on rational and spline approximation

Journal of Approximation Theory, 1989
In a recent technically involved but important paper (in my opinion), \textit{P. Petrushev} [(*) ibid. 50, 141-159 (1987; Zbl 0647.41018)] established a weak-type estimate of the rational approximation by the best spline approximation. This was done following the classical result of \textit{D. J. Newman} [Mich. Math. J.
openaire   +1 more source

t‐Regina: Data‐driven Authoring of Free‐form Registration for Cartoon Character Sprites

Computer Graphics Forum, EarlyView.
Abstract This paper proposes t‐Regina, a novel iterative scheme that automates the manipulation of grid handles in free‐form deformation (FFD) for deformable registrations of cartoon character sprites. First, we build a data‐driven FFD (dFFD) that enables users to handle locations of FFD handles from lower‐dimensional parameters.
Tsukasa Fukusato, Akinobu Maejima
wiley   +1 more source

Migration‐related inequalities in HIV diagnosis, treatment initiation and retention in care among migrants in Greece

HIV Medicine, EarlyView.
Abstract Objectives Migrants account for a substantial proportion of people living with HIV in Europe, yet inequalities across the HIV care continuum remain insufficiently characterized. We examined migration‐related differences in HIV diagnosis, treatment initiation and retention in care in Greece.
Nikos Pantazis, Varvara Vasalou, Olga Tsachouridou, Vasileios Papastamopoulos, Konstantinos Protopapas, Myrto Astriti, Maria Chini, Mina Psichogiou, Georgios Chrysos, Nikolaos V. Sipsas, Helen Sambatakou, Markos Marangos, Diamantis Kofteridis, Periklis Panagopoulos, Giota Touloumi, on behalf of AMACS, G. Adamis, M. Chini, G. Chrysos, M. Marangos, O. Katsarou, D. Kofteridis, S. Metallidis, P. Panagopoulos, N. Pantazis, A. Papadopoulos, V. Paparizos, V. Papastamopoulos, M. Psichogiou, H. Sambatakou, NV. Sipsas, G. Touloumi   +31 more
wiley   +1 more source