MEASURING THE GEOMETRICAL SIZE OF PARTICLES THAT HAVE THE SHAPE OF A TRIAXIAL ELLIPSOID BY A TELEVISION METHOD

This paper discusses how the characteristic dimensions of a suspended particle having the shape of a triaxial ellipsoid of arbitrary orienta tion are related to its projection parameters onto three mutually perp endicular coordinate planes. Relationships are obtained that explicitl y express these principal dimensions in terms of parameters that can b e measured by a television method: the three areas of the projections onto the corresponding coordinate planes and the three lengths of the projections onto the corresponding coordinate axes. (C) 1997 The Optic al Society of America.