Results 41 to 50 of about 885,152 (196)

Prediction of Anal Cancer Recurrence After Chemoradiotherapy Using Quantitative Image Features Extracted From Serial 18F-FDG PET/CT

open access: yesFrontiers in Oncology, 2019
We extracted image features from serial 18F-labeled fluorodeoxyglucose (FDG) positron emission tomography (PET) / computed tomography (CT) scans of anal cancer patients for the prediction of tumor recurrence after chemoradiation therapy (CRT).
Jiahui Wang   +12 more
doaj   +1 more source

Extraction of Image Topological Graph for Recovering the Scene Geometry from UAV Collections [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2014
This study was performed aiming to construct the scene geometry with a large set of unmanned aerial vertical (UAV) collections. By improving the popular structure from motion (SfM) algorithm, we focus on the efficiency improvement on procedures of both ...
Z. Xu   +5 more
doaj   +1 more source

A Geometry Feature Aggregation Method for Point Cloud Classification and Segmentation

open access: yesIEEE Access, 2021
In spite of the good performance of convolutional neural network (CNN) and graph neural network (GNN) in 3D point cloud classification and segmentation at present, to aggregate local information of point clouds and improve the robustness of geometric ...
Yong Wang, Chenke Yue, Xintong Tang
doaj   +1 more source

Information geometry in quantum field theory: lessons from simple examples [PDF]

open access: yes, 2020
Motivated by the increasing connections between information theory and high-energy physics, particularly in the context of the AdS/CFT correspondence, we explore the information geometry associated to a variety of simple systems. By studying their Fisher
Erdmenger, Johanna   +2 more
core   +3 more sources

A Unified Methodology for the Generalisation of the Geometry of Features

open access: yesISPRS International Journal of Geo-Information, 2021
The development of generalisation (simplification) methods for the geometry of features in digital cartography in most cases involves the improvement of existing algorithms without their validation with respect to the similarity of feature geometry ...
Anna Barańska   +5 more
doaj   +1 more source

From on-line sketching to 2D and 3D geometry: A fuzzy knowledge based system [PDF]

open access: yes, 2000
The paper describes the development of a fuzzy knowledge based prototype system for conceptual design. This real time system is designed to infer user’s sketching intentions, to segment sketched input and generate corresponding geometric primitives ...
Jordanov, IN, Qin, SF, Wright, DK
core  

GEOMETRIAS DE TRAÇOS E LÍNGUAS ÍNDÍGENAS (MACRO-JÊ)

open access: yesCadernos de Estudos Lingüísticos, 2011
This paper is concerned with the formal model of feature organization, currently called "feature geometry", particularly with regard to the treatment given to the manner features.
Wilmar Rocha D'Angelis
doaj   +1 more source

Robust Non-Rigid Feature Matching for Image Registration Using Geometry Preserving

open access: yesSensors, 2019
In this paper, a robust non-rigid feature matching approach for image registration with geometry constraints is proposed. The non-rigid feature matching approach is formulated as a maximum likelihood (ML) estimation problem.
Hao Zhu   +4 more
doaj   +1 more source

Inverse form finding with h-adaptivity and an application to a notch stamping process [PDF]

open access: yes, 2017
The aim is to determine the optimized semi-finished workpiece geometry to its given target geometry after a forming process. Hereby, a novel approach for inverse form finding, a type of a shape optimization, is applied to a notch stamping process.
Caspari, M.   +2 more
core  

Feature based retargeting of parameterized geometry [PDF]

open access: yesGeometric Modeling and Processing, 2004. Proceedings, 2004
This paper presents an approach for mapping layouts of parametric surface patches to a target 3D geometry. Its main contribution is to facilitate the feature based placement of an arbitrary network of patches, assuring that both boundaries and parametric flow conform to features of the target shape.
K. Singh   +2 more
openaire   +1 more source

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