Paper published in a book (Scientific congresses and symposiums)
Sensitivity of particle size and shape parameters with respect to digitization
Pirard, Eric; Dislaire, Godefroid
2011In Proceedings 13 Int. Congress for Stereology
 

Files


Full Text
PUB_2011_09 Sensitivity of particle size and shape.pdf
Author preprint (159.98 kB)
Download
Annexes
PPT_11_09 Shape Sensitivity.pdf
Publisher postprint (1.44 MB)
PPT presented at the ICS13 Conference
Download

All documents in ORBi are protected by a user license.

Send to



Details



Keywords :
shape analysis; Robustness; Digital representation
Abstract :
[en] The growing success of image analysis based instruments for particle characterization demonstrates the importance of size and shape analysis in operations involving particulate materials. ISO norms for particle sizing using image analysis are being elaborated to clarify nomenclature and measurement principles. But despite this, there is still a lack of understanding of how the digital representation of a particle affects different size and shape parameters. It is the purpose of this paper to explore the magnitude of estimation errors of a series of size and shape parameters from different digital image representations of a single particle. These images are simulated from grey level images of black particles presenting a Gaussian transition towards their white background. Particles themselves are generated from analytical functions sampled by digital grids with variable densities, positions and orientations. Results of inscribed disk, elongation, circularity, roughness, roundness, etc. are plotted as a function of grid density (magnification) with error bars corresponding to the scattering of results for variable thresholds, grid translations and rotations As a conclusion, confidence intervals are given for parameters as a function of magnification and the most sensitive and robust methods of shape analysis are put forward.
Disciplines :
Geological, petroleum & mining engineering
Author, co-author :
Pirard, Eric  ;  Université de Liège - ULiège > Département Argenco : Secteur GeMMe > Géoressources minérales & Imagerie géologique
Dislaire, Godefroid
Language :
English
Title :
Sensitivity of particle size and shape parameters with respect to digitization
Publication date :
October 2011
Event name :
13 International Congress for Stereology
Event organizer :
International Society for Stereology
Event place :
Beijing, China
Event date :
19-23 Oct 2011
Audience :
International
Main work title :
Proceedings 13 Int. Congress for Stereology
Available on ORBi :
since 06 October 2011

Statistics


Number of views
155 (8 by ULiège)
Number of downloads
524 (13 by ULiège)

Bibliography


Similar publications



Contact ORBi