How to detect defects at a contour?

1. What are defect detection techniques?
2. How does contour detection work?
3. Which technique is preferable for detection of defects in multilayer structures?

What are defect detection techniques?

Defect Detection is a method where automated visual evaluation systems can be used to control the product quality in an industry to meet its objective. In this paper, we review different Defect Detection methods to detect various defects in an automated way.

How does contour detection work?

Contour Detection using OpenCV (Python/C++) Using contour detection, we can detect the borders of objects, and localize them easily in an image. It is often the first step for many interesting applications, such as image-foreground extraction, simple-image segmentation, detection and recognition.

Which technique is preferable for detection of defects in multilayer structures?

Pulsed eddy current (PEC) method has attracted researchers' attention in the detection of multi-layer conductive structures owing to its more plentiful information in time domain and frequency domain.