Knowledge base
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.
FPGA (Field Programmable Gate Array)
A FPGA is a reconfigurable silicon chip that pre-processes image data in the camera or on the frame grabber and in this way relieves the load on the host.
Gauging
One of the most common applications for inspecting manufactured components is gauging. Similar to using a physical calliper or rule, a gauge tool can measure distances and angles between edges. More advanced tools can report measurements between centres of circles and the spacing of repeating forms and edges, such as gear teeth.
GenICam
The GenICam standard (GENeric Interface for CAMeras) provides generic software interfaces for all kinds of machine vision cameras whatever their hardware interface. The underlying interface used, for example, GigE Vision or CameraLink, is of no relevance. New technologies such as Camera Link HS, CoaXPress, or USB3 Vision, also rely on the GenICam standard.
Geometric correction and image de-warping
Image distortion can be caused by many factors such as lens distortion (see the optics section), or when the camera views a target at an angle to the image plane. Geometric correction is very processor intensive, but can be essential in some applications to obtain a usable image.
GigE Vision
The data rates enabled by Gigabit Ethernet, in combination with the excellent support of many devices, make this technology a good choice for imaging applications.
GigE Vision - Device Discovery
Part of the GigE Vision standard allowing devices on the network to be found.
GigE Vision - driver implementation
The performance level of a GigE Vision system depends strongly on the hardware and software components. High-performance or filter drivers have a strong impact.
GigE Vision - GVCP (GigE Vision Control Protocol)
Part of the GigE Vision standard dealing with the control of cameras.
GigE Vision - GVSP (GigE Vision Streaming Protocol)
Part of the GigE Vision standard dealing with data streaming.
GigE Vision - Jumbo Frames
The performance level of a GigE Vision system depends strongly on the hardware and software components and their configuration. Jumbo frames have a strong impact.
GigE Vision - network switches, cards and cables
The performance level of a GigE Vision system depends strongly on the hardware and software components. It is extremly important to use powerful network hardware.