Telecentric imaging with line scan cameras
High resolution imaging and width measurement of stents
by Peter Gips, Gregor Federau and Ulrich Oechsner
Line scan cameras are semiconductor cameras used in many industrial environments. Most have just one photosensitive linear array, but some have single arrays with sensitivity for different colors (for example: RGB line scan camera with three arrays).
A line scan camera can be used for onedimensional measurements, such as determining the width of a gap, or for producing a twodimensional image by moving either the camera or the object, like a photocopier or a fax machine.
The main advantages of a line camera include high optical resolution and speed, the ability to synchronize each line and the freedom to produce an image of almost unrestricted length. [more]