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1. Measurement system structure
A vision-based dimensional measurement system consists of the following components:
lighting equipment ;
a lens (optical) ;
one or more CCD cameras;
an acquisition card ;
a microcomputer, an image processing module and, if required, an image display monitor.
The following paragraphs summarize the operating principles and features of these components.
1.1 Lighting
Lighting is a fundamental step in dimensional measurement. It has two essential purposes: to bring out all the important features of the object (object shape parameters) and to simplify...
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Measurement system structure
Camera calibration
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Manufacturers
This list offers a panorama of marketed solutions for object location, shape recognition, dimensional inspection and appearance control. This overview is not exhaustive, and includes a number of applications such as dimensional control in the automotive and eyewear industries: center-to-center measurement and measurement on printed circuit boards, as well as a few companies developing and/or distributing "machine vision...
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