Author(s)

M. Jung, M. Hill & J.W. McBride

Abstract

Two aspects of a surface are of interest: surface form and surface irregularity. The form is the geometry of an object. Superimposed on the form and usually of much finer detail is surface irregularity. The irregularity can be a combination of symmetrical and non-symmetrical deviations from nominal form and conclusions about the manufacturing process or the environmental and operating conditions under which a body has been used can be drawn from it. In this paper the reconstruction of surfaces for computer aided surface assessment (CASA) is discussed. Form characterisation of curved surfaces is outlined and the derivation and application of weighting functions is explicitly described

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