Composite material defect depth prediction method
A depth prediction and defect technology, applied in image data processing, instruments, calculations, etc., to achieve the effect of high prediction accuracy and simple method
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[0033] figure 1 It is a flow chart of a method for predicting the depth of composite material defects in the present invention.
[0034] In this example, if figure 1 Shown, the present invention a kind of depth prediction method of composite material defect, comprises the following steps:
[0035] S1. Image acquisition
[0036] Thermally load the test piece with a halogen lamp, and collect the infrared thermal image sequence of the test piece;
[0037] S2, image preprocessing
[0038] Use the matrix sparse decomposition algorithm to conduct qualitative defect analysis on infrared thermal image sequences, so as to determine all defect areas;
[0039] In this embodiment, for the obtained defect-containing infrared thermal image sequence, in order to reduce the number of thermal image frames and improve the accuracy of defect detection, preprocessing is performed by commonly used feature extraction algorithms, such as principal component analysis (PCA), independent Component...
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