Introduction to Machine Vision

Machine Vision is the technology/method used to provide image-based inspection and analysis.

Machine Vision offers a fast reliable way of inspecting parts inline. Machine Vision technology allows inspection of every part of the line moving over the high-speed range. In addition, it has guaranteed full safety. Machine Vision could be applied in many applications which check various inspections and test the results such as inspection inspections such as presence tests, type validations and measurement. In factory processes, machine vision can also be used to inspect appearance.

Machine vision has been used widely in all factories and is a critical process to ensure that correct parts with good quality are shipped out to their customers. It is no more an option to have machine vision, but a definite choice to help to minimize the job load for most of the Quality Assurance engineer.

The benefits of automated inspection outweigh human labour in the aspects of consistency & increased output. There have been many areas where machine visions are used with our realization. Some examples will include code reading in the warehouse or production floor for traceability purpose, or to act as the “eyes” for the robots. Measurements or integrity check of the products, and defects inspection are commonly used in different stages of the production of the final product.

Machine vision technology has been progressing & changing significantly over the years. Many new solutions, including line scan, 3D, thermal imaging have been introduced to solve some of the challenging problems in the industry. Over the recent years, AI deep learning has also been used widely for defects inspection, sorting & OCR applications too. Nonetheless, certain fundamentals must be understood in order to achieve successful implementation of any machine vision application.

Benefits of Machine Vision

1. Erases Human Error

Human vision requires the synchronization of the eye and brain. Whereas machine learning and algorithms are used in computer vision to detect, identify and categorise objects based on size or colour, as well as uncovering and understanding patterns that emerge from visual data. All in all, computer vision simulates human vision.

However, in many cases, there are certain defects on a product that is invisible to the naked eye but can be detected through the use of Machine Vision sensors. Additionally, it eliminates the fatigue of the operator and different standards varying among several individuals.

2. Increases Safety

Machine Vision offers a safer work environment by reducing human participation in the production line. Additionally, it can also be used to detect if any employees are in a hazardous zone and provide real-time warning.

3. Reduce Costs

With the implementation of a Machine Vision system in the manufacturing process, the amount of manpower can be significantly reduced, decreasing the labour cost as well. Furthermore, with a more accurate product inspection, there will be lesser unsatisfactory products being dispatched to customers which in turn will benefit the company in the long run.

4. Wide range of applications

Machine Vision systems provide a variety of services, including but not limited to, Colour Checking, Alignment, Defect Detection, OCR and Code Inspection. With so many applications, Machine Vision systems can be implemented in almost any industry.