From inspecting the packaging of consumer goods to surveilling traffic to identifying cells with fluorescence, vision techniques are increasingly being used in every industry imaginable. Whether you are using vision to improve the quality of your finished goods, guide your robot, or add traceability to improve your process, here are five considerations to keep in mind when you choose your vision system.
- Software is the key
Ease of use is all about abstracting technology components in a system so that you can meet familiar application challenges as a domain expert. This means you can concentrate on your vision inspection while NI worries about how to make your applications work for different camera standards and take advantage of the latest hardware advancements.
NI LabVIEW graphical programming software also provides a powerful and easy-to-learn environment (compared to text-based programming), and gives you access to hundreds of functions to enhance images, measure parts, identify objects, check for presence, and locate features through the NI Vision Development Module.
Through software, you can model system variations to see if your inspection will stand up to motion blur, changes in lightin, and camera position. These common issues in vision systems can be seen in the image above.
- Choosing the right camera
Each application is best suited to a certain type of image sensor, with options spanning area-scan, monochrome, and color sensors as well as specialty sensors such as thermal (infrared), 3D, and line-scan. It is important to be aware of inspection conditions when choosing among these different sensor types. For example, inspecting quick-moving rolls of textile requires a line-scan sensor while measuring hot metal in a dusty, dark environment requires a thermal camera.
NI has made it a priority to support the most widely used imaging standards and strives to integrate support for new technologies. With the NI Vision Acquisition Software driver package, you can use a common framework to acquire images from smart cameras; traditional plug-in frame grabbers using analog, parallel digital, and Camera Link standards; and consumer buses such as GigE Vision, USB, and IEEE 1394. These drivers are the first to natively support image acquisition from GigE Vision and IEEE 1394 cameras in real time.
- Intelligent vision through industrial connectivity.....
To read about numbers 3 through 5 as well as dive deeper into the first too points, check out this article on vision systems>>>