Results 111 to 120 of about 586,655 (242)

Analysis and Comparison of the Cone Curvature Descriptor in Facial Gesture Recognition Tasks

Ingeniería, 2015
This article presents the results of analyzing the behavior of the Cone Curvature shape descriptor (CC) in the task of recognition of facial expressions in 3D images.
Julián Severiano Rodriguez Acevedo, Flavio Augusto Prieto Ortiz   +1 more
doaj  

A road generalization method using graph convolutional network based on mesh-line structure unit

Geocarto International
Road network simplification is a complex decision-making process. Such a multi-factor decision and scaling operation traditionally applied rule-based methods.
Tianyuan Xiao, Tinghua Ai, Dirk Burghardt, Pengcheng Liu, Min Yang, Aji Gao, Bo Kong, Huafei Yu   +7 more
doaj   +1 more source

Monte Carlo estimation of radiation dose in organs of female and male adult phantoms due to FDG-F18 absorbed in the lungs

EPJ Web of Conferences, 2014
The determination of dose conversion factors (S values) for the radionuclide fluorodeoxyglucose (18F-FDG) absorbed in the lungs during a positron emission tomography (PET) procedure was calculated using the Monte Carlo method (MCNPX version 2.7.0).
Belinato Walmir, Santos William S., Silva Rogério M. V., Souza Divanizia N.   +3 more
doaj   +1 more source

Generating Inviscid and Viscous Fluid-Flow Simulations over an Aircraft Surface Using a Fluid-Flow Mesh [PDF]

Fluid-flow simulation over a computer-generated aircraft surface is generated using inviscid and viscous simulations. A fluid-flow mesh of fluid cells is obtained.
Rodriguez, David L., Sturdza, Peter
core   +1 more source

Hybrid Coding For Animated Polygonal Meshes

, 2008
A new hybrid coding method for compressing animated polygonal meshes is presented. This paper assumes the simplistic representation of the geometric data: a temporal sequence of polygonal meshes for each discrete frame of the animated sequence. The method utilizes a delta coding and an octree-based method.
Jinghua Zhang, Owen, Charles B., Jinsheng Xu   +2 more
openaire   +1 more source

Fast, Nondestructive and Precise Biomass Measurements Are Possible Using Lidar-Based Convex Hull and Voxelization Algorithms

Remote Sensing
Light detection and ranging (lidar) scanning tools are available that can make rapid digital estimations of biomass. Voxelization and convex hull are two algorithms used to calculate the volume of the scanned plant canopy, which is correlated with ...
Matthew H. Siebers, Peng Fu, Bethany J. Blakely, Stephen P. Long, Carl J. Bernacchi, Justin M. McGrath   +5 more
doaj   +1 more source

Simple and Robust Boolean Operations for Triangulated Surfaces

, 2013
Boolean operations of geometric models is an essential issue in computational geometry. In this paper, we develop a simple and robust approach to perform Boolean operations on closed and open triangulated surfaces.
Mei, Gang, Tipper, John C.
core  

WindPoly: Polygonal Mesh Reconstruction via Winding Numbers

European Conference on Computer Vision (Proceedings of ECCV 2024)
Xin He, Chenlei Lv, Pengdi Huang, Hui Huang   +3 more
openaire   +2 more sources

Geometric Modeling Based on Polygonal Meshes

, 2000
While traditional computer aided design (CAD) is mainly based on piecewise polynomial surface representations, the recent advances in the efficient handling of polygonal meshes have made available a set of powerful techniques which enable sophisticated modeling operations on freeform shapes. In this tutorial we are going to give a detailed introduction
Kobbelt, L., Bischoff, S., Kähler, K., Schneider, R., Botsch, M., Rössl, C., Vorsatz, J.   +6 more
openaire   +2 more sources

Automated Camera Pose Generation for High-Resolution 3D Reconstruction of Bridges by Unmanned Aerial Vehicles

Remote Sensing
This work explores the possibility of automating the aerial survey of bridges to generate high-resolution images necessary for digital damage inspection.
Jan Thomas Jung, Dominik Merkle, Alexander Reiterer   +2 more
doaj   +1 more source