Jul. 11, 2012

Using Machine Vision for Precision Gauging

Human vision is capable and flexible but can't make fast, precise and repetitive measurements. In these cases, a machine vision system is your best choice for precision measurements. Here we concentrate on how to use a machine vision system for precision optical gauging. One of the best methods for precision optical gauging is to light the part being measured from behind using collimated light (parallel light rays, like a searchlight). This casts a sharp shadow of the part into a telecentric lens (a lens that accepts only parallel light rays) and forms an image on a high resolution digital camera. Edge positions on the part are then measured to a fraction of a pixel using high-precision machine vision algorithms. We will examine how this works in a real-life situation, and then will further explore the elements of a machine vision system necessary for precision gauging.

Do you want to know more? Download the Whitepaper.


Teledyne Dalsa
605 McMurray Road
N2V 2E9 Waterloo, ON
Phone: +1 519 886 6000
Telefax: +1 519 886 8023

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