Results 31 to 40 of about 655,112 (194)

Conditional Random Field Features and Structure Assessment for Digital Terrain Modeling

open access: yesIEEE Access, 2021
The conditional random field is a suitable framework for contextual classification of two-dimensional (images) and three-dimensional (point clouds) data.
Tito Arevalo-Ramirez   +1 more
doaj   +1 more source

An integrated exploration of heat kernel invariant feature and manifolding technique for 3D object recognition system

open access: yesActa Scientiarum: Technology, 2023
Spectral Graph theory has been utilized frequently in the field of Computer Vision and Pattern Recognition to address challenges in the field of Image Segmentation and Image Classification.
Subramaniam Usha   +3 more
doaj   +1 more source

Delaunay triangulation based image enhancement for echocardiography images [PDF]

open access: yes, 2009
A novel image enhancement approach for automatic echocardiography image processing is proposed. The main steps include undecimated wavelet based speckle noise reduction, edge detection, followed by a regional enhancement process that employs Delaunay ...
Ahanathapillai, V.   +2 more
core   +3 more sources

Space: The Re-Visioning Frontier of Biological Image Analysis with Graph Theory, Computational Geometry, and Spatial Statistics

open access: yesMathematics, 2021
Every biological image contains quantitative data that can be used to test hypotheses about how patterns were formed, what entities are associated with one another, and whether standard mathematical methods inform our understanding of biological ...
John R. Jungck   +3 more
doaj   +1 more source

Similarity Invariant Delaunay Graph Matching [PDF]

open access: yes, 2008
Delaunay tessellation describes a set of arbitrarily distributed points as unique triangular graphs which preserves most local point configuration called a clique regardless of noise addition and partial occlusion. In this paper, this structure is utilised in a matching method and proposed a clique-based Hausdorff Distance (HD) to address point pattern
Dongjoe Shin, Tardi Tjahjadi
openaire   +2 more sources

Triangulations with Circular Arcs

open access: yesJournal of Graph Algorithms and Applications, 2015
An important objective in the choice of a triangulation of a given point set is that the smallest angle becomes as large as possible. When triangulation edges are straight line segments, it is known that the Delaunay triangulation is the optimal solution.
Oswin Aichholzer   +5 more
doaj   +1 more source

Node Overlap Removal by Growing a Tree

open access: yesJournal of Graph Algorithms and Applications, 2017
Node overlap removal is a necessary step in many scenarios including laying out a graph, or visualizing a tag cloud. Our contribution is a new overlap removal algorithm that iteratively builds a Minimum Spanning Tree on a Delaunay triangulation of the ...
Lev Nachmanson   +4 more
doaj   +1 more source

Model Graf Spasial Adaptif untuk Optimasi Jalur UAV pada Sistem Mitigasi Kebakaran Hutan

open access: yesEdumatic
Dynamic wildfires require adaptive mitigation systems capable of responding in real time. Optimizing Unmanned Aerial Vehicle (UAV) routes is critical for effective fire mitigation.
Adinda Salsa Leviona   +1 more
doaj   +1 more source

On the Isomorphism between the Medial Axis and a Dual of the Delaunay Graph [PDF]

open access: yes2009 Sixth International Symposium on Voronoi Diagrams, 2009
In this paper, we show a graph isomorphism between a dual graph of the Delaunay graph of the sampled points and the medial axis of the sampled features. This dual graph captures the fact that two Delaunay triangles share two vertices or an edge. Then, we apply it to the computation of the medial axis of the features selected in an image.
Ojaswa Sharma   +2 more
openaire   +3 more sources

Pedestrian Trajectory Prediction Based on Delaunay Triangulation and Density-Adaptive Higher-Order Graph Convolutional Network

open access: yesISPRS International Journal of Geo-Information
Pedestrian trajectory prediction plays a vital role in autonomous driving and intelligent surveillance systems. Graph neural networks (GNNs) have shown remarkable effectiveness in this task by explicitly modeling social interactions among pedestrians ...
Lei Chen, Jiajia Li, Jun Xiao, Rui Liu
doaj   +1 more source

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