Method and system for automatically detecting defects in remote video inspection applications
First Claim
1. An industrial video inspection system for detecting a possible defect, comprising:
- acquisition means for acquiring an image of a portion of a rotating object; and
detection means for detecting any non-planar features and any non-smoothly curving features which are indicative of said possible defect in said portion of said rotating object.
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Accused Products
Abstract
The system automatically performs analysis on images from a remote video inspection apparatus to provide an operator with an indication of areas that are potentially out of specification, or which require more detailed analysis by the operator. Pattern recognition algorithms are applied to sequential images to search for anomalies or defects in the images. The search area is initially limited to edges of the item being inspected where the probability of defects is much higher. To reduce the processing requirements and probability of false detection, the search area is narrowed to a limited field of view and depth. Defects such as dents and small cracks are detected using stereo measurement techniques or by projecting a known supplementary image into the defect. These techniques are used to provide an image disparity map. Using known triangulation algorithms, this map provides depth and distance information to the processing system.
172 Citations
54 Claims
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1. An industrial video inspection system for detecting a possible defect, comprising:
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acquisition means for acquiring an image of a portion of a rotating object; and
detection means for detecting any non-planar features and any non-smoothly curving features which are indicative of said possible defect in said portion of said rotating object. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An industrial video inspection system for detecting a possible defect, comprising:
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acquisition means for acquiring at least first and second successive images of a portion of a rotating object;
comparison means for comparing said at least first and second successive images to each other; and
detection means for detecting any differences between said first and second successive images to detect said possible defect. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 40, 42)
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28. A method for detecting a possible defect, comprising the steps of:
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acquiring an image of a portion of a rotating object; and
detecting any non-planar features and any non-smoothly curving features which are indicative of said possible defect in said portion of said rotating object. - View Dependent Claims (29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39)
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41. A method for inspecting an industrial video inspection system to detect a possible defect, comprising the steps of:
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acquiring at least first and second successive images of a portion of a rotating object;
comparing said at least first and second successive images to each other; and
detecting any differences between said first and second successive images to detect said possible defect. - View Dependent Claims (43, 48, 49, 50, 51, 52, 53, 54)
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44. A method according to claim 44, further comprising the steps of:
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measuring said detected features indicative of said possible defect to obtain a measurement result; and
providing said measurement result to said user. - View Dependent Claims (45, 46, 47)
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Specification