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SKIING WITH LAMBERT  --  SNOW, ILLUMINATION AND MACHINE VISION  (continued)


5. Application: How to Illuminate Machine Vision (continued)


5.4 Scanning Etched Characters on Metal
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Key words:
invisible | collimated | point source | dark field | light field

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Mat characters on polished surfaces are invisible under some illumination conditions. How to make mat characters visible without time-consuming experiments.
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Continued: 5.5 Scanning "Natural" Three-Dimensional Scenes

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Last modified April 14th, 2009