Effects of camera lens distortion on particle size and shape characterizations

Q Sun, C Li, J Zheng - Geotechnical Testing Journal, 2021 - asmedigitalcollection.asme.org
The image-based methods have been widely used for particle size and shape
characterizations. However, images captured by various cameras may contain a level of …

Minimum image quality for reliable optical characterizations of soil particle shapes

Q Sun, J Zheng, MR Coop, FN Altuhafi - Computers and Geotechnics, 2019 - Elsevier
Remarkable advances have been seen in image-based methods for automating soil particle
shape characterizations in the last decade. However, the accuracy and reliability of image …

Analysis of an image-based method to quantify the size and shape of sand particles

F Altuhafi, C O'Sullivan, I Cavarretta - Journal of Geotechnical and …, 2013 - ascelibrary.org
Sand response depends on particle morphology (size and shape). In geotechnical research
and practice, size is typically assessed by sieve analysis and particle shapes are …

Discussion of “Particle Roundness and Sphericity from Images of Assemblies by Chart Estimates and Computer Methods” by Roman D. Hryciw, Junxing Zheng, and …

MR Muszynski, SJ Vitton - Journal of Geotechnical and …, 2017 - ascelibrary.org
The discussers commend the authors on their contribution to the study of particle shape
characterization for the engineering and research communities. The purpose of this …

Particle shape determination by two-dimensional image analysis in geotechnical engineering

J Rodriguez, J Johansson, T Edeskär - … Meeting: 09/05/2012-12/05 …, 2012 - diva-portal.org
Particle shape of soil aggregates is known to influence several engineering properties; such
as the internal friction angle, the permeability etc. Previously shape classification of …

Particle shape quantities and measurement Techniques–A review

JM Rodriguez, T Edeskär, S Knutsson - The Electronic journal of …, 2013 - diva-portal.org
It has been shown in the early 20th century that particle shape has an influence on
geotechnical properties. Even if this is known, there has been only minor progress in …

[引用][C] A test procedure for particle sizing via digital image processing

AK Kho, DJ Williams - 2012 - espace.library.uq.edu.au
A laboratory study was undertaken to investigate the accuracy of using digital image
processing to produce particle size distribution curves of road aggregate and crushed rock …

Evaluation of roundness parameters in use for sand

L Li, M Iskander - Journal of Geotechnical and Geoenvironmental …, 2021 - ascelibrary.org
Particle granulometry plays an important role in the engineering behavior of many sands.
However, the evaluation of particle shape and size has historically been a tedious and labor …

Shape Characterization of Granular Particles using Image Based Techniques

N Roy - 2018 - etd.iisc.ac.in
Granular soils with different sizes and shapes are often used in many civil engineering
structures. In different contexts, several researchers have emphasized that shape of particles …

Comparison of 2D and 3D dynamic image analysis for characterization of natural sands

L Li, M Iskander - Engineering Geology, 2021 - Elsevier
Abstract The efficacy of Dynamic Image Analysis (DIA) for evaluating particle size and shape
parameters was explored using three natural sands, having varying particle morphologies …