Learn more about machine vision! In our knowledge base we are explaining key technical terms about image processing. We give you an overview to topics like 3D machine vision or the established standards like CameraLink, GigE Vision or GenICam.
A 'Vision System' is defined as a prebuilt solution that is ready to configure and deploy, containing the sensor, processor and software. While generally used to automate manufacturing and secure product quality, the use of vision systems in non-industrial applications such as medical, traffic, sports or entertainment is becoming common.
Selecting and correctly configuring the optimal illumination setup is one of the key factors when designing a vision system. Missing image information caused by incorrect illumination makes subsequent analysis much more difficult or even impossible, as no analysis algorithm can recover information that has never been captured.
Virtually all cameras need a lens of some kind to
collect the light that is scattered from the surface of
an object. The lens reconstructs this scattered light as
an image on a light sensitive area behind the lens,
normally a CCD or CMOS sensor.
Acquisition technology has seen major changes in the last few years,
particularly with the adoption of new bus technologies. Traditional
frame grabber technology has been joined by a range of generic
interfaces such as FireWire and USB (2.0 and 3.0) along with Gigabit
The basis of all imaging software is the ability to acquire, transfer,
manipulate and interpret the pixel data output by a camera. What happens to
these images can vary from the relatively simple task of saving them to disk,
through to using them in a complex pattern recognition application.
When selecting a PC for an imaging application there are many factors
that need to considered in order to ensure that the solution chosen
delivers the performance needed, combined with both long-term
reliability and stability of supply.
CameraLink HS has a long history even though the standard itself is
young. With the ever increasing camera speeds "classic" CameraLink
standard is not able to scale easily beyond 850 MB/s, so another new
interface was needed to meet the needs of ever higher bandwidths at
the same or even lower cost.
CoaXPress (CXP) is the second beyond CameraLink standard that was
established a few years ago. In the simplest version, power, control and
data for the remote device are send via a single coaxial cable.