Online defect detection

Automated defect detection has been adopted in numerous production pipelines due to the rapid growth of deep learning. Many defect inspection research concentrates on developing an accurate model that can perform well on a specific type of fault. However, new flaws may emerge in practice as the manufacturing process advances. In this post, we will go over some fundamental responsibility diagnostic principles. You may also utilize the free Online defect detection tool Saiwa designed and developed.

Read Also: What is anomaly detection, and why you need it?


What is online defect detection?

The chance of recognizing a discontinuity based on the provided parameter of the difference is referred to as “defect detection.” The consistency of inspection results is an essential measure of their detectability. Defect detection is a step in the assurance and quality control processes.

Online defect detection techniques

Techniques for Online defect detection might be used, depending on the product and its requirements. Several defect detection techniques are available, including the Fourier transform, edge detection, wavelet transform, morphological operations, etc.


Fourier transform

The Fourier transform method relies on a normalized cross-correlation approach where a database of Fourier transforms elements is constructed. These elements are correlated with reference and test fringe patterns.

Edge detection

When recognizing interference regions and dead pixels, the edge detection technique determines the textures of the interfering areas and dead pixels. In addition, this study provides a linear fitting-based approach for screening corresponding regions to remove all interference areas.

Wavelet transform

The wavelet transform has grown in popularity as a defect detection method. The use of a pyramid-structured wavelet transform for texture analysis was initially proposed by Mallat in his seminal work (1989). Several outcomes have improved this fundamental approach to surface detection and classification. 

Morphological operations

The morphological techniques may be employed to eliminate regular structural patterns in the background and emphasize local abnormalities in the picture. They have been utilized widely to handle defect detection challenges in various industries.

What is the surface defect?

A “defect” is defined as an absence, imperfection, or location that varies from the reference solution.
Surface defects are lines or planes that split a material into pieces with different orientations but the same crystalline structure. Surface defects are commonly caused by surface finishing procedures such as embossing, as well as degradation caused by the weather or environmental stress cracking.


What is surface defect detection?

Advanced industrial systems necessitate better product efficiency, and industrial quality control is becoming increasingly important. Defects, on the other hand, such as scratches, stains, or holes in the product’s surface, have a detrimental influence on the product’s performance, look, and user-friendliness. Online defect detection is an excellent technique to mitigate the negative impacts of product faults. Surface defect identification is part of the quality control and assurance process. Surface defect detection is a step of quality control and surveillance whose primary function is to detect surface defects in things.


Online defect detection in the production of business needs

Quality control is one of the important factors in production systems. Performing a manual inspection on each package is costly in terms of both time and effort and causes delays in production. In most cases, defects are not seen by the human eye, as a result, this leads to a decrease in the quality of a single component or in a defective final product that must be destroyed. Defect rates can often be higher with more complex manufacturing systems.

Having an automated Online defect detection system to detect anomalies and differences in elements for the quality inspection process is very important in any automated manufacturing system. This is true for any industry that needs to detect defects or changes in components or small particles.


What is defect detection with computer vision?

Computer vision is a field of artificial intelligence known as computer vision. This technology enables computers and systems to extract useful information from digital photos, videos and other visual inputs and provide information, actions or suggestions in response. Online defect detection is a process to detect the flow of the finished product. Before computer vision became widely used by most people, fault diagnosis was a manual and laborious operation. This caused problems such as the possibility of human error and the inability of employees to be available around the clock. The task of diagnosing defects in computer vision is to identify defects and mistakes, abnormalities and possible problems of equipment or products.

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