The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 05, 2005
Filed:
Apr. 01, 2002
Peter Henry Tu, Schenectady, NY (US);
Glen William Brooksby, Glenville, NY (US);
James Vradenburg Miller, Clifton Park, NY (US);
Donald Wagner Hamilton, Burnt Hills, NY (US);
Peter Henry Tu, Schenectady, NY (US);
Glen William Brooksby, Glenville, NY (US);
James Vradenburg Miller, Clifton Park, NY (US);
Donald Wagner Hamilton, Burnt Hills, NY (US);
General Electric Company, Niskayuna, NY (US);
Abstract
Apparatus () for determining the leading edge (E) of an airfoil (A) includes a first light source (S) illuminating a portion of the airfoil including its leading edge and a first camera (M) acquiring an image of the illuminated portion of the airfoil. A second light source (S), spaced apart from the first light source, also illuminates a portion of the airfoil including its leading edge. A second camera (M) acquires an image of the portion of the airfoil illuminated by the second light source. The location (N) of the second light source and the first camera are coincident in space as are the location (N) of the first light source and the second camera. An image processor (P) processes the respective images obtained from the two cameras to locate the leading edge of the object. In doing so, the processor utilizes similarities in illumination of the airfoil by the respective light sources and occlusion boundaries of the respective illuminated portions of the airfoil.