Results 11 to 20 of about 636 (118)

Template-Based 2D High-Precision Model Reconstruction of Car Body

open access: yesIEEE Access, 2023
Car body design includes the construction of car sketches, 2D models and 3D models. The establishment of high-quality car body models usually relies on CAD software, which requires the proficient operating skills, and the efficiency is relatively low ...
Bo Wang   +4 more
doaj   +1 more source

Novel embedding secrecy within images utilizing an improved interpolation-based reversible data hiding scheme

open access: yesJournal of King Saud University: Computer and Information Sciences, 2022
This paper proposed an innovative approach for reversible data hiding (RDH) within images in such a way that the image can be accurately recovered after extracting the data.
Fatuma Saeid Hassan, Adnan Gutub
doaj   +1 more source

Isogeometric treatment of large deformation contact and debonding problems with T-splines: a review

open access: yesCurved and Layered Structures, 2015
Within a setting where the isogeometric analysis (IGA) has been successful at bringing two different research fields together, i.e. Computer Aided Design (CAD) and numerical analysis, T-spline IGA is applied in this work to frictionless contact and mode ...
Dimitri Rossana
doaj   +1 more source

Geodesic Length Measurement in Medical Images: Effect of the Discretization by the Camera Chip and Quantitative Assessment of Error Reduction Methods

open access: yesPhotonics, 2020
After interventions such as bypass surgeries the vascular function is checked qualitatively and remotely by observing the blood dynamics inside the vessel via Fluorescence Angiography.
Ady Naber, Daniel Berwanger, Werner Nahm
doaj   +1 more source

Enhancement of Contour Smoothness by Substitution of Interpolated Sub-Pixel Points for Edge Pixels

open access: yesIEEE Access, 2021
This study designed a sub-pixel precision edge detecting algorithm to enhance contour smoothness. First, the coordinate value of RGB pixel is projected on the space line of R=G=B to obtain gray image.
Tian-Hu Liu   +6 more
doaj   +1 more source

Detection of Glaucoma Using Cup to Disc Ratio From Spectral Domain Optical Coherence Tomography Images

open access: yesIEEE Access, 2018
Glaucoma is an asymptomatic neurological disease. It causes damage to optic nerve due to increased fluid pressure within eyes. In the proposed system, cup-to-disc-ratio has been computed considering internal layers of the retina using spectral-domain ...
Tehmina Khalil   +4 more
doaj   +1 more source

Understanding Bézier Extraction, Bézier Elements, and Hermite Elements in NURBS-Based Isogeometric Analysis

open access: yesComputer Assisted Methods in Engineering and Science
This paper discusses the current need for Bézier extraction in isogeometric analysis (IGA), and proposes a straightforward procedure to improve the accuracy of the numerical solution without increasing the number of B-spline elements.
Christopher G. Provatidis
doaj   +1 more source

Automatic Handling of C0-G0 Continuous Rational Bézier Elements Produced from T-Splines Through Bézier Extraction

open access: yesMathematics
This paper shows that at a certain time-point in the analysis procedure, the accuracy of T-spline based isogeometric analysis (IGA) may be substantially improved by increasing the multiplicity of the inner knots up to the polynomial degree. This task can
Christopher Provatidis   +1 more
doaj   +1 more source

Automatic Generation of T-Splines with Extraordinary Points Based on Domain Decomposition of Quadrilateral Patches

open access: yesMathematics
Isogeometric analysis (IGA) is a numerical methodology for solving differential equations by employing basis functions that preserve the exact geometry of the domain. This approach is based on a class of mathematical functions known as NURBS (Non-Uniform
João Carlos L. Peixoto   +2 more
doaj   +1 more source

Design of the Front Contact Metallization Patterns for Solar Cells Using Variable-Width Bezier Curves

open access: yesApplied Sciences
The pattern of the front contact metallization critically influences solar cell efficiency. This study introduces a novel explicit geometry optimization approach for designing the front contact metallization patterns.
Kai Li, Yongjiang Liu, Peizheng Li
doaj   +1 more source

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