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Other contributing persons, institutions or organisationsdfg - Funder
Other contributing persons, institutions or organisationsHerle, Ivo - TU Dresden - ProjectLeader
Person(s) who is (are) responsible for the content of the research dataWiebicke, Max
Description of further data processingThe 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 acquisitionExperiment: numerical experiment
Research objectsPhysicalObject: soil, granular matter
AbstractThese 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 techniquesThe data on fabric and its evolution were created with the discrete element software WooDEM (https://woodem.eu/).
Additional keywordsimage analysis
Additional keywordsimage processing
Additional keywordsfabric
Additional keywordscontact orientation
Additional keywordsinterparticle contacts
Additional keywordsgranular materials
Languageeng
Year or period of data production2019
Publication year2019
PublisherTechnische Universität Dresden
References on related materialsIsPartOf: 123456789/1310 (Handle)
References on related materialsIsNewVersionOf: http://dx.doi.org/10.25532/OPARA-14 (DOI)
Content of the research dataText, Model, Software: - fabric data from DEM - scripts 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 rightsTechnische Universität Dresden
Holder of usage rightsInstitut für Geotechnik
Usage rights of the dataCC-BY-4.0
SoftwareResource Production: WooDEM
SoftwareResource Production: spam
Discipline(s)Engineeringde
Discipline(s)Materials Sciencede
Discipline(s)Physicsde
Title of the datasetBenchmark analysis of synthetical images - (updated) source code and example DEM data


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  • A benchmark strategy for the experimental measurement of contact fabric [2]Open Access Icon
    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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