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.
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.
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
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.
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
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.
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.
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.