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.
Cameras: Front side or back side illuminated sensors
Conventional sensors are designed to convert the light falling on the front side of the sensor to electrons. As discussed in the article Pixel size and well capacity not all the sensor surface is sensitive to light as the pixel also needs control electronics limiting the fill factor.
Cameras: Innovative camera features - Part 1
In the first of this series we'll be looking at two technologies that could help to speed up your data transfer and improve system reliability:
TurboDrive & Trigger-to-image Reliability (T2IR)
Cameras: Line scan applications
Line scan systems are mainly used for inspection of continuous material. They are also well suited for applications requiring extremely high resolution or speed, or for the inspection of cylindrical or rotating objects.
Cameras: Line scan bars (aka CIS)
Line scan bars (aka contact image sensors - CIS) are an attractive alternative to common line scan cameras. They’re much easier and faster to set up, offer high sensitivity and extremely fast data rates.
This page covers how the technology works with some examples of applications it’s well suited to.
Cameras: Line scan cameras
To inspect sheet steel, paper web or other uncut materials for errors at extremely high speed during their manufacture, line-scan based image processing systems are often the only technically and economically viable solution. This article describes the current state-of-the-art line-scan systems.
Cameras: Line Scan Technology
Line scan technology involves building up an image, one line at a time, using a line sensor (linear array), which passes in a linear motion over an object, or where the object passes in a linear motion under the sensor.
Cameras: Machine vision camera interfaces
The choice of camera data interface is a vital consideration both in traditional PC-based machine vision systems and in the increasingly important area of embedded vision. Higher and higher resolution CMOS image sensors and increasing inspection speeds require large amounts of data to be transferred between the camera and processor.
Cameras: Partial scan
This is a technique that applies to most current machine vision sensor designs. By only reading out a partial number of the horizontal lines (down to 1 line is possible) on a sensor, the frame rate is increased.
Cameras: Pixel defects
The terms dead, hot and warm pixels are used to describe pixel defects usually caused in the manufacturing process of a sensor.
Cameras: Pixel size and well capacity
The sensors found in cameras used for vision applications have pixels that convert incoming photons into electrons.
Cameras: Region of interest (ROI)
Some cameras offer the ability to transmit only a partial region of a sensor, which offers the option of concentrating on image areas containing the information relevant to image processing.