US Patent 7136510 Borehole imaging

A method of detecting significant events intersecting a borehole from an image of the borehole wall having: (a) converting the image into a three-dimensional orientation space; (b) selecting a parameter relation that represents the intersection of an event (3,5 and 6) with the borehole wall; (c) creating a parameter space consisting of numbers as a function of the parameters, wherein each number is a measure of the support in the orientation space for an event characterized by the parameters that pertain to that number; (d) selecting in the parameter space a set of the largest numbers, wherein the parameters that pertain to each of these largest numbers represent the intersections of the significant events with the borehole wall; and (e) presenting the intersections pertaining to the set of the largest numbers as a list of data representing significant events.