Results 21 to 30 of about 6,844,739 (267)

Fast 3D Extended Target Tracking using NURBS Surfaces [PDF]

open access: yesInternational Conference on Intelligent Transportation Systems, 2019
This paper proposes fast and novel methods to jointly estimate the target’s unknown 3D shape and dynamics. Measurements are noisy and sparsely distributed 3D points from a light detection and ranging (LiDAR) sensor.
Benjamin Naujoks, P. Burger, H. Wuensche
semanticscholar   +1 more source

Five-Axis Tool Path Generation of Injection Mold Represented by T-Spline Surface

open access: yesAdvances in Polymer Technology, 2020
Injection molding is widely used in industries to produce polymeric products. At present, compound NURBS surfaces are commonly used to represent freeform surfaces in mold models.
Ce Shang   +5 more
doaj   +1 more source

Systems Issues in Solid Freeform Fabrication [PDF]

open access: yes, 1992
This paper is concerned with the systems aspects of the Solid Freeform Fabrication (SFF) technology, i.e., the issues that deal with getting an external geometric CAD model to automatically control the physical layering fabrication process as directly as
Wozny, Michael
core   +1 more source

The multivariate quartic NURBS surfaces

open access: yesJournal of Computational and Applied Mathematics, 2004
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Li, Chong-Jun, Wang, Ren-Hong
openaire   +1 more source

Segmentation and semantic labelling of RGBD data with convolutional neural networks and surface fitting [PDF]

open access: yes, 2017
We present an approach for segmentation and semantic labelling of RGBD data exploiting together geometrical cues and deep learning techniques. An initial over-segmentation is performed using spectral clustering and a set of non-uniform rational B-spline ...
Minto, Ludovico   +2 more
core   +1 more source

Creeping-ray tracing algorithm for arbitrary NURBS surfaces based on adaptive variable step Euler method

open access: yesDianzi Jishu Yingyong, 2018
Although the uniform theory of diffraction(UTD) could be theoretically applied to arbitrarily-shaped convex objects modeled by non-uniform rational b-splines(NURBS), one of the great challenges in calculation of the UTD surface diffracted fields is the ...
Cao Tuo, Fu Song, He Siyuan
doaj   +1 more source

Generating NURBS cladding and structures with parametric programming and BIM

open access: yesPARC: Pesquisa em Arquitetura e Construção, 2020
The process of designing and building curvilinear architectures is still challenging. The use of multiple applications with distinctive design paradigms are unlikely to disappear. The interoperability used here was not only the conventional one.
Neander Furtado Silva   +2 more
doaj   +1 more source

Information hiding through variance of the parametric orientation underlying a B-rep face [PDF]

open access: yes, 2008
Watermarking technologies have been proposed for many different,types of digital media. However, to this date, no viable watermarking techniques have yet emerged for the high value B-rep (i.e.
Corney, Jonathan   +2 more
core   +1 more source

NURBS-Python: An open-source object-oriented NURBS modeling framework in Python

open access: yesSoftwareX, 2019
We introduce NURBS-Python, an object-oriented, open-source, Pure Python NURBS evaluation library with no external dependencies. The library is capable of evaluating single or multiple NURBS curves and surfaces, provides a customizable visualization ...
Onur Rauf Bingol, Adarsh Krishnamurthy
doaj   +1 more source

Efficient Culling Techniques for Interactive Deformable NURBS Surfaces on GPU [PDF]

open access: yes, 2016
[Abstrtact] InfoValue: NURBS (Non-uniform rational B-splines) surfaces are the standard freeform representation in Computer-Aided Design (CAD) applications.
Amor, Margarita   +3 more
core   +1 more source

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