Parameterisation of non-homogeneities in buried object detection by means of thermography

摘要: Abstract Landmines and their natural environment form a system of complex dynamics with variable characteristics. A manifestation that complexity within the context thermography-based landmines detection is excessive noise in thermograms. That has severely suppressed application thermography for purposes humanitarian demining. (To be differentiated from military demining operations other than war [Land Mine Detection DOD's Research Program Needs Comprehensive Evaluation Strategy, US GAO Report, GAO-01 239, 2001; International Action Standards, Chapter 4.––Glossary. Available at: http://www.mineactionstandards.org/IMAS_archive/Final/04.10.pdf >].) The discrepancy between existing role actual potential motivated systematic approach to sources thermograms buried objects. These are variations mine orientation relative soil normal, which modify shape signature on thermograms, as well non-homogeneities vegetation layer above mine, overall quality This paper analyses influence mines, more generally axially symmetric object its following two angles have been extracted serve parameters describing variation orientation: (i) θ ––angle local vertical axis symmetry (ii) ψ surface normal. Their compared (iii) d ––the depth change, serves control parameter. influences quantified ranked statistically planned experiment. analysis proved among listed, most influential one statistical interaction dψ , followed dθ . According tests, these combinations considered significant influences. results show currently applied must broadened by inclusion orientation, otherwise decrease probability detection, due presence error, occurs.