Characterisation of the physical properties of porous media using monochrome imaging

A. Kovalchuk*, V. Grandjean, A. Hurst, M. A. Player, J. Watson

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review


An optical method of non-destructive analysis of grain and pore size distribution and porosity of rock samples at the well site during drilling has been developed. The oblique coherent incoherent light is used to produce four monochrome images of a sample's surface taken with illumination from different directions. Processing of the intensity distributions of the images allows separation of information about grain sizes from pore sizes and provides a binary image of the porous surface. Digital image processing is then applied, to identify and delineate grains and pores and produce statistical distributions to characterise the porous surface viz. pore and grain size distributions and porosity.

Original languageEnglish
Pages (from-to)138-150
Number of pages13
JournalProceedings of SPIE - The International Society for Optical Engineering
Publication statusPublished - 18 Aug 2004
EventSixth International Conference on Correlation Optics - Chernivtsi, Ukraine
Duration: 16 Sept 200319 Sept 2003


  • Grain size
  • Image acquisition
  • Image processing
  • Porosity
  • Porous media
  • Size distribution


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