ACTA

Application of Statistical Image Analysis in Quantification of Neutron Radiography Images of Drying

I.M. Fijał-Kirejczyk^a, J.J. Milczarek^a, J. Żołądek-Nowak^a, F.C. de Beer^b, M.J. Radebe^b and G. Nothnagel^b
^aNational Centre for Nuclear Research (NCBJ), A. Sołtana 7, 05-400 Otwock-Świerk, Poland
^bRadiation Science, Necsa, Church Street West ext., Pelindaba, Pretoria, 0001, South Africa

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The statistical approach to the thermal neutron radiography picture analysis is applied to evaluation of the experimental results obtained for drying of rectangular and cylindrical samples of granulated and rigid porous materials. We have shown that the time dependence of the standard deviation of image brightness reflects the appearance and motion of the drying front observed during second period of the drying process. The results are discussed within a simple two-region model of the drying sample image.

DOI: 10.12693/APhysPolA.122.410
PACS numbers: 87.59.bf, 07.05.Pj, 61.05.Tv, 81.05.Rm, 47.56.+r, 47.55.nb