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Comparison of manual and automatic approaches for characterisation of morphology and nanostructure of soot particles
journal contribution
posted on 2019-10-01, 00:00 authored by P Verma, E Pickering, N Savic, Ali ZareAli Zare, R Brown, Z Ristovski© 2019 Elsevier Ltd This study is an attempt to compare the manual and automatic approaches for analysis of the morphology and nanostructure of soot particles. The automated methodology is composed of two parts: soot particle analysis (morphology characterisation) and soot fringe analysis (nanostructure characterisation) such as fringe length, fringe tortuosity and fringe separation distance. In this study the application of Fast Fourier Transform (FFT) is introduced, which omits the manual selection of fringe pairs for measurement of fringe separation distance and aids fast computation. The parameters which effect the performance of automated approach were identified and optimised. The automated approach was applied to analyse images from different fuels. Using the optimised parameters, the performance of the automatic approach was tested against results obtained by the manual approach. The statistical comparison between two approaches showed similar results but with better accuracy for automated approach (lower standard error) and thus validates the functionality of the proposed methodology. The application of FFT in computation of fringe separation distance reduces the computation time and avoids biases of operator in selecting fringe pairs.
History
Journal
Journal of aerosol scienceVolume
136Pagination
91 - 105Publisher
ElsevierLocation
Amsterdam, The NetherlandsPublisher DOI
ISSN
0021-8502eISSN
1879-1964Language
engPublication classification
C Journal article; C1 Refereed article in a scholarly journalCopyright notice
2019, Elsevier Ltd.Usage metrics
Keywords
Science & TechnologyTechnologyLife Sciences & BiomedicinePhysical SciencesEngineering, ChemicalEngineering, MechanicalEnvironmental SciencesMeteorology & Atmospheric SciencesEngineeringEnvironmental Sciences & EcologyHRTEM (high-resolution transmission electron microscopy)MorphologyNanostructureImage processingSoot particlesTRANSMISSION ELECTRON-MICROSCOPYENGINE OPERATING-CONDITIONSPOINT-CONTACTING MONOMERSDUAL-FUEL COMBUSTIONDIESEL SPRAY FLAMEOXIDATION REACTIVITYPARTICULATE MATTERSIZE DISTRIBUTIONFRACTAL DIMENSIONOIL BIODIESELAtmospheric Sciences
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