Image processing-based automobile body paint film defect detection and identification method
A defect detection and identification method technology, applied in image data processing, image enhancement, image analysis and other directions, can solve the problem of inaccurate identification of car body paint film defects, and achieve the effect of reducing production cost, improving accuracy and improving quality
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[0055] Refer to figure 1 , A method for detecting and recognizing car body paint film defects based on image processing, which includes the following steps:
[0056] Step 1: Obtain an image; use the laser transmitter 2 in the car body paint film defect detection system to illuminate the surface of the test piece 1 vertically to obtain an image;
[0057] Step 2: Image preprocessing: After collecting the car body paint film defect image, in order to improve the image quality, thereby improving the defect detection accuracy and efficiency, the image is preprocessed;
[0058] Step 3: Extract the defect characteristic parameters of the paint film of the car body; select the geometric characteristics, the gray characteristic value of the paint film of the car body, and the main projection characteristic value in the horizontal direction as the defect characteristic parameters;
[0059] Step 4: Reduce the dimension of feature parameters; use principal component analysis to reduce the dimensio...
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