Defect analysis system

Details Defect analysis system Defect analysis system

H - Electricity

04

N

350/32

H04N 3/18 (2006.01) G01M 13/00 (2006.01) G01N 21/89 (2006.01) G06T 7/00 (2006.01)

Patent

CA 1175555

ABSTRACT OF THE DISCLOSURE Disclosed is an apparatus, and a related method, for the automatic detection of defects in manufactured parts, such as turbine blades and the like. The apparatus includes a video camera, a thresholding module to provide a binary image of a frame of video data, a region growing module to define anomalous regions by associating contiguous picture elements indicative of surface anomalies on the part, and defect analysis modules for determining if a rejectable defect exists, based in a comparison between statistics with respect to the anomalous regions and predetermined rejection criteria. Rejection may be based on region size, region shape, or region position and orientation with respect to neighboring regions. Thus, a region may be rejected if it is nearly collinear with another region, even through neither region may itself be characterized as a rejectable region.

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