Patent ID: 7102745
Filing Date: 2006-09-05
Classification: E21B,G01B,G06T

Abstract:
1. A method for inspecting a wire-wrapped screen comprising: (a) moving a camera to a location along a length of the screen; (b) capturing an image of a portion of the screen, the image including at least one slot defined by facing edge portions of adjacent wraps of wire; (c) determining a thickness of the slot, based on the image; (d) repeating the operations (a)–(c) to determine the thickness of slots at a first plurality of locations along the length of the screen, wherein the first plurality of locations are at a single first angle along a circumference of the screen; (e) rotating the screen about its longitudinal axis subsequent to operation (d); and (f) repeating the operations (a)–(c) after rotating the screen to determine the thickness of slots at a second plurality of locations along the length of the screen, wherein the second plurality of locations are at a single second angle along the circumference of the screen that is offset from the first angle.