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What is Machine Vision?
Definition of Machine Vision
In layman’s terms, “Machine Vision” refers to an imaging aspect of a conventional integrated machine system with built-in components comprising of camera, lighting, lens, vision computer and image-processing software.
It is recognized as a form of industrial automation which is widely used in many industries - semiconductor, electronics, automotive, pharmaceutical, logistics and manufacturing, to gather useful information based on image data which are enhanced by image-processing software for further evaluation or study to decide on the next action plan.
Advantages of Machine Vision
Increases Productivity and Provides Quality Assurance
Labor-intensive manual inspections are susceptible to human error,
which can be overcome with the use of vision technologies. For example, the implementation of an industrial vision system in a manufacturing plant has capability to keep up with inspection of products or parts on a production line running at high speed without ever compromising on overall quality – all the slightest details are captured by the camera sensor so that defective goods can be identified and removed in time.
Ensures High Precision and Reliability
Vision systems deliver accurate and consistent feedback to the controller once the pattern matching for a good and defective product are pre-programmed. This means that monitoring the manufacturing processes would take up lesser time and effort, the surplus manpower can be distributed to manage other operations.
Being the first point of contact to receive any form of image data, it is imperative to select the camera suitable for your application as the raw image will go through further image-processing which will affect end results received by the system to determine on proactive measures. Some factors to consider when selecting the proper camera for your vision system: resolution, frame rate, sensor size, mono/colour and interface (Gige or USB 3.0 or camera link). If you’re considering line scan application, cameras with higher camera resolution are a necessity.
The function of the lens is to take in the light rays bouncing off the surface of an object to form a defined image by redirecting them to a single point.
For surface inspections, the first thing to take note would be the lenses’ focal length which is dependable on the working distance between the object and lens. Secondly, you have to check out the maximum aperture which are indicated on the lens itself. As the aperture number gets smaller, so does the amount of light which enter the lens increases.
If you are keen to learn more about vision technologies to implement into your vision system, you may reach out to us at [email protected] and we be glad to share our expertise in the area of optics.