Benchmark analysis of synthetical images - source code and example DEM data

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Other contributing persons, institutions or organisations	dfg - Funder
Other contributing persons, institutions or organisations	Herle, Ivo - TU Dresden - ProjectLeader
Person(s) who is (are) responsible for the content of the research data	Wiebicke, Max
Description of further data processing	The image analysis scripts that are supplied are written on the basis of the image software spam -- find the link in the details.
Type of data acquisition	Experiment: numerical experiment
Research objects	PhysicalObject: soil, granular matter
Abstract	These files serve as the basis for a benchmark study on the image analysis to extract contact fabric from x-ray tomographies of granular materials. They are based on the python package "spam": The Software for the Practical Analysis of Materials -- that will soon be open source and installable via pip. For the moment (as of 2018-08-24), see: https://ttk.gricad-pages.univ-grenoble-alpes.fr/spam/intro.html#welcome-to-spam These files support the publication: A benchmark strategy for the experimental measurement of contact fabric
Applied methods and techniques	The data on fabric and its evolution were created with the discrete element software WooDEM (https://woodem.eu/).
Additional keywords	image analysis
Additional keywords	image processing
Additional keywords	fabric
Additional keywords	contact orientation
Additional keywords	interparticle contacts
Additional keywords	granular materials
Language	eng
Year or period of data production	2018
Publication year	2018
Publisher	Technische Universität Dresden
Publisher	Institut für Geotechnik
Content of the research data	Text, Model, Software: - fabric data from DEM - scipt to turn DEM data to synthetic images - image analysis scripts to determine contact fabric from the images
Other specification of usage rights
Holder of usage rights	Technische Universität Dresden
Holder of usage rights	Institut für Geotechnik
Usage rights of the data	CC-BY-4.0
Software	Resource Production: WooDEM
Software	Resource Processing: spam
Additional precise description of discipline	soil mechanics, granular materials
Discipline(s)	Engineering	de
Discipline(s)	Materials Science	de
Discipline(s)	Physics	de
Title of the dataset	Benchmark analysis of synthetical images - source code and example DEM data

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A benchmark strategy for the experimental measurement of contact fabric [2]
This work develops a strategy to benchmark image analysis tools that can used for the determination of contact fabric from tomographic images. The discrete element method is used to create and load a reference specimen for which the fabric and its evolution is precisely known. Chosen states of this synthetic specimen are turned into realistic images taking into account inherent image properties, such as the partial volume effect, blur and noise. The application of the image analysis tools on these images validates the findings of the metrological study and highlights the importance of addressing the identified shortcomings, i.e., the systematical over-detection of contacts and the strong bias of orientations when using common watersheds.

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