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Kevin Harding

Kevin Harding is scientific fellow at Industrial Technology Institute, Ann Arbor, Michigan. He also serves as director, Optics and Vision Application Center, and manager, Metrology Application Center.

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Articles February 1, 1996 Kevin Harding

Measuring with Moire

Casting a pattern of light on a part and viewing that pattern at a different angle through a grating with the same pattern creates a moire pattern that can reveal small changes in the part's shape. This article tells how this phenomenon can be used by machine vision systems to measure part dimensions or pinpoint variations from a specified contour.

Kevin Harding

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