Results 21 to 30 of about 5,544,273 (297)

Multi-Incidence Holographic Profilometry for Large Gradient Surfaces with Sub-Micron Focusing Accuracy

open access: yesSensors, 2021
Surface reconstruction for micro-samples with large discontinuities using digital holography is a challenge. To overcome this problem, multi-incidence digital holographic profilometry (MIDHP) has been proposed. MIDHP relies on the numerical generation of
Moncy Sajeev Idicula   +5 more
doaj   +1 more source

Rapeseed Leaf Estimation Methods at Field Scale by Using Terrestrial LiDAR Point Cloud

open access: yesAgronomy, 2022
Exploring the key technologies of agricultural robots is an inevitable trend in the development of smart agriculture. It is significant to continuously transplant and develop novel algorithms and models to update agricultural robots that use light ...
Fangzheng Hu   +4 more
doaj   +1 more source

Schematic surface reconstruction [PDF]

open access: yes2012 IEEE Conference on Computer Vision and Pattern Recognition, 2012
This paper introduces a schematic representation for architectural scenes together with robust algorithms for reconstruction from sparse 3D point cloud data. The schematic models architecture as a network of transport curves, approximating a floorplan, with associated profile curves, together comprising an interconnected set of swept surfaces.
Changchang Wu   +3 more
openaire   +2 more sources

Porosity Assessment in Geological Cores Using 3D Data

open access: yesEnergies, 2023
The porosity of rocks is an important parameter used in rock mechanics and underground mining. It affects the movement of fluids in the rock mass and the internal processes taking place (the ability to store water or gases), allowing us to characterize ...
Paulina Kujawa   +5 more
doaj   +1 more source

Digital Surface Model Interpolation Based on 3D Mesh Models

open access: yesRemote Sensing, 2018
A digital surface model (DSM) is an important geospatial infrastructure used in various fields. In this paper, we deal with how to improve the quality of DSMs generated from stereo image matching.
Soohyeon Kim, Sooahm Rhee, Taejung Kim
doaj   +1 more source

Method of Real-Time Wellbore Surface Reconstruction Based on Spiral Contour

open access: yesEnergies, 2021
A wellbore surface is an irregular surface structure. The distribution of points on the wellbore surface measured based on the drilling diameter is not uniform.
Hongqiang Li, Ruihe Wang
doaj   +1 more source

Computational Geometry-Based Surface Reconstruction for Volume Estimation: A Case Study on Magnitude-Frequency Relations for a LiDAR-Derived Rockfall Inventory

open access: yesISPRS International Journal of Geo-Information, 2021
Key to the quantification of rockfall hazard is an understanding of its magnitude-frequency behaviour. Remote sensing has allowed for the accurate observation of rockfall activity, with methods being developed for digitally assembling the monitored ...
Paul-Mark DiFrancesco   +2 more
doaj   +1 more source

Temporal surface reconstruction [PDF]

open access: yesProceedings. 1991 IEEE Computer Society Conference on Computer Vision and Pattern Recognition, 2002
An approach which allows an arbitrary structure estimation to be embedded into a recursive estimation process that incrementally improves a structure estimate with every new frame that becomes available is discussed. The approach is based on Bayesian estimation theory and the Kalman filter.
openaire   +3 more sources

Implicit meshes for surface reconstruction [PDF]

open access: yesIEEE Transactions on Pattern Analysis and Machine Intelligence, 2006
Deformable 3D models can be represented either as traditional explicit surfaces, such as triangulated meshes, or as implicit surfaces. Explicit surfaces are widely accepted because they are simple to deform and render, but fitting them involves minimizing a nondifferentiable distance function.
Slobodan Ilic, Pascal Fua
openaire   +4 more sources

Surface reconstruction by Voronoi filtering [PDF]

open access: yesProceedings of the fourteenth annual symposium on Computational geometry - SCG '98, 1998
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Amenta, Nina, Bern, Marshall
openaire   +5 more sources

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