2021-04-162014-01-019781632666949SCOPUS;2-s2.0-84907411666http://hdl.handle.net/10784/29488Digital rock physics combines modern imaging with advanced numerical simulations to analyze the physical properties of rocks. In this paper we suggest a special segmentation procedure which is applied to a carbonate rock from Switzerland. Starting point is a CT-scan of a specimen of Hauptmuschelkalk. The first step applied to the raw image data is a non-local mean filter. We then apply different thresholds to identify pores and solid phases. Because we are aware of a non-neglectable amount of unresolved microporosity we also define intermediate phases. Based on this segmentation determine porosity-dependent values for the p-wave velocity and for the permeability. The porosity measured in the laboratory is then used to compare our numerical data with experimental data. We observe a good agreement. Future work includes an analytic validation to the numerical results of the p-wave velocity upper bound, employing different filters for the image segmentation and using data with higher resolution.engEAGE Publishing BVinfo:eu-repo/semantics/conferencePaperAcoustic wave velocityImage segmentationPorosityRocksSeismic wavesWave propagationHigher resolutionIntermediate phasisNon-local mean filtersNumerical dataNumerical estimationNumerical resultsP-wave velocitySegmentation procedureComputerized tomography2021-04-16Osorno, M.Uribe, D.Saenger, E.H.Madonna, C.Steeb, H.Ruiz, O.