Microfinish measurement apparatus and technique
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United States of America Patent
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-
Oct 9, 1984
Grant Date -
N/A
app pub date -
May 20, 1982
filing date -
May 20, 1982
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An apparatus and technique for measuring microfinishes of workpieces at on-line speeds. A digitized image of a finished surface of a workpiece is generated. Under microprocessor control, a distribution of the digitized values is obtained. This distribution is compared against pre-stored distributions of known surface finishes to determine the type of finish of the workpiece and/or the acceptability of the finish. The comparison is obtained using curve matching techniques and by comparison of mean gray level values.
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Cited Art Landscape
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